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rather slender, equal from close to the base to near the tip, gently
arcuate, the tip barely upturned and pointed at an angle of not less
than 59, the inner valves scarcely armed, the teeth being barely in-
dicated by a slight crenulation.

Length of body, $ 13 mm., 9 10 mm. ; pronotum, $ 4.7 mm.,
9 3.65 mm. ; fore femora, $ 5.5 mm., 9 4.5 mm. ; hind femora and
tibiae, each, $ 12.9 mm., 9 9.4 mm.; ovipositor, 8.5 mm.

6 , 3 9 . Colorado 7-8,000', H. K. Morrison ; South Park, Col-
orado, 8-10,000', August 11-16, S. H. Scudder. I also place here an
immature 9 taken by me at Pueblo, Colorado, 4.700', August 30-31.
Since the description was written, Mr. L. Bruner has sent me 1 $ ,
2 9, from Brush Creek, Custer Co., Colorado, 10,000'. and Granite,
Colorado.



76 PROCEEDINGS OF THE AMERICAN ACADEMY.

35. CEDTHOPHILUS DIVERGENS.

Ceuthophilus divergens Scudd.!, Bost. Journ. Nat. Hist., vii. 436
(1862) ; Walk., Cat. Derm. Salt. Brit. Mus., i. 201 (1869) ; Thorn. ?,
Proc. Acad. Nat. Sc. Philad., 1870, 77 ; Id. ?, Ann. Kep. U. S. Geol.
Geogr. Surv. Terr., ii. 265, 269 (1871) ; Id.?, Bull. U. S. Geol. Geogr.
Surv. Terr., iv. 485 (1878) ; Eil., Stand. Nat. Hist., ii. 184 (1884).
Blatchl., Proc. Ind. Acad. Sc., 1892, 153 (1894).

Body subglabrous, dark blackish fuscous above, passing on the sides
into rufo-testaceous more or less tinged with luteous, and with blotches
and irregular spots of the same above ; especially to be noted are a
mediodorsal rufo-luteous interrupted stripe and on the sides of the
pronotum a large spot of the same much vermiculate with fuscous ;
the abdomen is also more or less spotted with the same ; the legs are
dingy luteous, all the femora tipped with fuscous and the hind femora
heavily marked with fuscous in a scalariform pattern. The antennae
are moderately slender and three or four times as long as the body, and
the legs are rather long and slender, with prominent spines. Fore
femora no stouter, but in the male slightly shorter, than the middle
femora, much less than half as long as the hind femora and but little
longer than the pronotum, the inner carina with 2-3 spines, the sub-
apical long. Middle femora with 2-3 spines on the front carina, the
subapical longest, and on the hind carina two small spines besides a
long genicular spine. Hind femora about as long as the body, about
two and a half times longer than the fore femora, moderately stout
particularly in the male, where they are less than three and a half times
while in the female they are nearly four times as long as broad, the
middle of the inner surface in the male with a considerable cluster of
raised points on the upper half, the outer carina with about ten unequal
stout teeth the largest shorter but stouter than the tibial spurs (<J) or
apically with a series of subdued serrulations (9 ), the inner carina in
9 armed like the outer carina but very inconspicuously, in the <J as in
the 9 but more conspicuously, the intervening carina narrow. Hind
tibiae scarcely longer than the femora, straight in both sexes, slender,
distinctly though feebly constricted at the base, faintly enlarging above
toward the apex, armed beneath with a single subapical spine besides
the apical pair ; spurs subalternate, the basal at the end of the proximal
fourth of the tibia, nearly or quite twice as long as the tibial depth, set
at an angle of about 70 with the tibia and divaricating from 130 to
180, their tips incurved ; inner middle calcaria much longer than the
outer, fully twice as long as the others or as the spurs, and as long as



SCUDDER. NORTH AMERICAN CEUTHOPHILI. 77

the first tarsal joint in the $ , scarcely so long in the 9. Hind tarsi
less than half as long as the hind tibiae, the first joint almost equalling
the rest together, the second much more than twice as long as the
third and with it about as long as the fourth. Cerci rather stout and
short, hardly exceeding in length half the femoral breadth. Ovipositor
nearly straight and short, shorter than the fore femora, the basal half
tapering, the apical half slender and equal, the tip more than usually
upturned and produced to a very acuminate point, the teeth of the
inner valves long, aculeate, arcuate.

Length of body, $ 12 mm., 9 13 mm. ; antennae, (est.) $ 40 mm.,
9 48mm. ; pronotum, < 4.5 mm., 9 5 mm. ; fore femora, $ 5.4 mm.,
9 5.25 mm.; hind femora, $ 13.5 mm., 9 12.75 mm.; hind tibia?,
$ 13.75 mm., 9 13 mm. ; ovipositor, 4.75 mm.

1 J, 2 9- Nebraska, A. Agassiz (Mus. Comp. Zool.). Thomas
reports it from several localities in Colorado, Wyoming, Dakota, and
Montana, but it is quite as likely as not that some other species was
mistaken for it. The one reported by Osborn and Bruner from Iowa
and Nebraska is the one here described as (7. bruneri.

36. CEUTHOPHILUS OCCDLTUS, sp. nov.

Body castaneous, more or less and irregularly blotched above with
feeble fuscous markings, most conspicuous on the pronotum and absent
from a narrow irregular and sometimes broken median stripe of the
ground color, which does not extend upon the abdomen ; abdomen
obscured with fuscous on the posterior margins of the segments. Legs
luteo-castaneous, the outside of the hind femora with the usual mark-
ings nearly obsolete. Antennae very long and slender, the legs
moderately long. Fore femora a little stouter than the middle femora,
about a sixth longer than the pronotum, and half or less than half as
long as the hind femora, the inner carina armed with a long preapical
spine and sometimes with another short one. Middle femora with a
long preapical spine on the front carina, sometimes accompanied in
the 9 by 1-2 others, the hind carina with a long genicular spine
accompanied by 2-3 spines in the $. Hind femora of about the
length of the body in the g, about twice (9) or distinctly more than
twice (^) as long as the fore femora, rather slender, being nearly
four times as long as broad, without conspicuous raised points on the
surface, the outer carina elevated, with 5-6 distant spinules, the largest
very small (,J) or not elevated, with many minute serrulations on the
apical half (9 ), the inner carina with numerous delicate spinules (<J) or
similar to the other carina (9). Hind tibice straight, distinctly longer



78 PROCEEDINGS OF THE AMERICAN ACADEMY.

than the femora, beneath with a single preapical spine besides the
apical pair ; spurs subopposite, the basal before the end of the proximal
fourth of the tibiae, long and delicate, being nearly twice as long as
the tibial depth, set at an angle of about 45 with each other and
divaricating about 110, their tips incurved. Inner middle calcaria a
little longer than the outer, twice as long as the others and nearly
twice as long as the spurs, as long as the first tarsal joint. Hind tarsi
two fifths as long as the tibiae, the first joint as long as the others
together, the fourth about equalling the second and third together.
Cerci pretty stout at base, tapering throughout, pointed, longer than
the femoral breadth. Ovipositor nearly two thirds as long as the hind
femora, pretty stout at base, the distal two thirds equal and rather
slender, the apex produced to a fine spinous point and the teeth of the
inner valves prominent and sharp, the proximal subdenticulate, the
others acicular and arcuate.

Length of body, $ 11 mm., 9 12 mm.; antennae, (est.) g 30 mm.,
9 25 mm. ; pronotum, $ 4 mm., 9 3.75 mm. ; fore femora, $ 4.7
mm., 9 4.5 mm. ; hind femora, $ 10.5 mm., 9 8.5 mm. ; hind
tibiae, $ 11.5 mm., 9 9 mm.; ovipositor, 5.25 mm.

1 $,2 9. Georgia, Morrison.

37. CEUTHOPHILUS ALPINUS, sp. nov.

Luteo-testaceous, traversed by distinct and rather broad fuscous
bands at the incisures of all the segments (about equally on the
anterior and posterior margins) which fade out more or less on the
lower portion of the sides ; pronotum with two broad subdorsal longi-
tudinal fuscous bars, extending across at least the anterior half of the
segment, leaving between them a slender mediodorsal luteous stripe ;
legs luteo-testaceous, scarcely at all infuscated excepting on the hind
femora which sometimes show coarse and obscure scalariform mark-
ings. The antenna are moderately slender and probably do not twice
exceed the length of the body, and the legs are short. Fore femora
scarcely if at all stouter than the middle femora, but very little longer
than the pronotum, about half as long as the hind femora, the inner
carina with a subapical spine only. Middle femora armed with 1-2
(9) or 3-4 (<J) spinules on the front carina, and on the hind carina
with 12 spinules besides a short genicular spine. Hind femora very
much shorter than the body, twice as long as the fore femora, moder-
ately stout, being scarcely more than three times as long as broad, and
the enlarged portion long, the surface with exceedingly few scattered
raised points on the upper half beyond the middle, the outer carina



SCUDDER. NORTH AMERICAN CEUTHOPHILI. 79

uniformly and rather finely serrulate, more finely in the 9 than in the
<, the inner carina with similar but finer and less frequent serrulations
or spinules, the intervening sulcus narrow. Hind tibiae as long as
the femora, straight in both sexes, armed beneath with two distant
median spines besides the apical pair; spurs opposite for the most part,
the basal at the end of the proximal third of the tibia, no longer than
the tibial depth, set at an angle of 45 to the tibia, and divaricating
about 60, their tips incurved ; inner middle calcaria of about the same
length as the outer, less than twice as long as the others or as the
spurs, and fully two thirds as long as the first tarsal joint. Hind tarsi
almost half as long as the tibiaB, the first joint distinctly shorter than
the rest together, the second twice as long as the third, and with it as
long as the fourth. Cerci stout on the basal half, tapering beyond,
shorter than the femoral breadth. Ovipositor stout at extreme base,
suddenly narrowing to a slender almost straight blade, nearly two
thirds as long as the hind tibias, the teeth of the inner blades aculeate,
arcuate, and long.

Length of body, g 13 mm., 9 12.5 mm.; pronotum, $ 3.9 mm.,
9 3.4 mm. ; fore femora, $ 4.4 mm., 9 3.8 mm. ; hind femora and
tibia;, each, $ 9 mm., 9 7.6 mm. ; ovipositor, 4.85 mm.

2 <J, 2 9. South Park, Colorado, 8-10,000', Aug. 11-16, S. H.
Scudder; Mt. Lincoln, Colorado, 11-13,000', above timber, Aug. 13,
S. H. Scudder.

38. CEDTHOPHILUS BRDNERI, sp. nov.

Ceuthophilus divergens Osb., Proc. Iowa Acad. Sc., i, ii. 119 (1892) ;
Brun.! (pars), Publ. Nebr. Acad. Sc., iii. 32 (1893).

Obscure brownish fuscous, with luteous markings which are very
dull and inconspicuous except in the bordering of the inferior margins
of the thoracic segments ; they are mostly found in large blotches of
very irregular form on the sides of the pronotum and in smaller lateral
and dorsal anterior spots on the other segments, sometimes confluent
and the lateral often crossing the abdominal segments ; there is some-
times an interrupted mediodorsal thread ; legs luteous, much infuscated
especially on either side of the femoro-tibial articulation, the hind
femora very broadly marked with blackish fuscous in a scalariform
pattern. The antennne are slender and about three times as long as
the body, and the legs slender but not very long. Fore femora no
stouter than the middle pair, much less than half as long as the hind
femora and only about a sixth longer than the pronotum, the inner
carina with a long preapical spine sometimes accompanied by a shorter



80 PROCEEDINGS OF THE AMERICAN ACADEMY.

one. Middle femora with 2-3 spines, the preapical long on the front
carina, the hind carina with a very long genicular spine and sometimes
an additional shorter one. Hind femora considerably more than twice
as long as the fore femora, about as long as the body, the upper margin
more arcuate than the lower moderately slender, about three and a
quarter times longer than broad, less than the apical fourth subequal,
the surface with no raised points, the outer carina with two or three
very feeble distant serrulations in the apical third ( ) or unarmed
(9), the inner carina with distant raised points, the intervening sulcus
narrow. Hind tibiae straight in both sexes, very slender, slightly
longer than the femora, armed beneath with 1-2 median spines besides
the apical pair ; spurs subopposite, the basal at the end of the proximal
fourth of the tibia or a little beyond it, usually fully twice as long as
the tibial depth, set at an angle of about 60 with the tibia and
divaricating about 130 (rather less in the 9), their tips incurved;
inner middle calcaria considerably longer than the outer, more than
twice as long as the others, about twice as long as the spurs and a
little longer than the first joint of the tarsi. Hind tarsi more than
two fifths as long as the tibiae, the first joint as long as the others
combined, the second more than twice as long as the third and with it
as long as the fourth. Cerci tapering throughout, but especially in the
basal half, nearly as long as the femoral breadth. Ovipositor fully
two thirds as long as the hind femora, straight, tapering strongly in
basal half, beyond equal and slender, the tip strongly upcurved and
very acute, the teeth aculeate, arcuate.

Length of body, $ 11 mm., 9 14 mm.; pronotum, 3.3 mm.,
9 4.25 mm. ; fore femora, $ 4.5 mm., 9 5 mm. ; hind femora, $ 10.5
mm., 9 11 mm.; hind tibiae, $ 11 mm., 9 H-4 mm.; ovipositor,
7.5 mm.

4 <J, 5 9- Lincoln, West Point, and Chadron, Dawes Co., Nebr.
(L. Bruner, Corn. Univ.) ; Sedgwick Co., Kans., S. S. Tucker (Univ.
Kans., through L. Bruner) ; Gulf Coast of Texas, S. F. Aaron. Os-
born also reports it from Iowa.

Mr. Bruner has also sent me from Carrizo Springs, Texas, two
males of a much larger size, in which the body is almost com-
pletely infuscated, so that the markings of the thorax cannot or can
scarcely be seen. The following measurements are taken from one of
them: length of body, 16.5 mm.; pronotum, 5.5 mm.; fore femora,
6.9 mm. ; hind femora, 15.5 mm. ; hind tibiae, 16.5 mm.



SCUDDER. NORTH AMERICAN CEUTHOPHILI. 81

39. CEUTHOPHILUS AGASSIZII.

Rhaphidophora agassizii Scudd.!, Proc. Bost. Soc. Nat. Hist., viii.
11 (1861).

Ceuthophilus agassizii Scudd.!, Bost. Journ. Nat. Hist., vii. 439
(1862) ; Walk., Cat. Derm. Salt. Brit. Mus., i. 202 (1869) ; Brunn.,
Monogr. Stenop., 65 (1888).

Ceuthophilus zonarius Walk., Cat. Derm. Salt. Brit. Mus., i. 203
(1869).

Body luteous, more or less infuscated in irregular patches which
especially form broad bands on the posterior margins of the segments
and leave the pronotum irregularly blotched, the fuscous portions
occupying the anterior and posterior and usually also the lateral mar-
gins, sometimes broken along the middle line, and running backward
from the anterior margins in a pair of large subdorsal stripes, the
fuscous portions often dotted with distinct luteous dots. The hind
femora are marked in the usual compound scalariform manner with
fuscous, which unites distally in two elongate patches on the lower half
of the outer surface. Antennae more than twice as long as the body,
not very slender. Legs moderately long. Fore femora distinctly
broader than the middle femora, a fifth longer than the pronotum, and
at least in the $ considerably less than half as Ion": as the hind
femora, the inner carina with a preapical spine, and at least in the $
with 3 or 4 other unequal spines. Middle femora with 4-5 unequal
spines on the front carina besides a preapical spine, and on the hind
carina numerous unequal spines, especially in the male, besides a
rather long genicular spine. Hind femora as long as the body, stout,
the apical fifth subequal, about three times as long as broad, with
scattered raised points on the distal half, especially above, the outer
carina with a tolerably uniform series of very short spines or serra-
tions, the inner carina with similar but finer serrations. Hind tibiae
of the same length as the femora or (<J) scarcely longer, straight in
both sexes or feebly sinuate in old males, moderately stout, armed
beneath with 12 preapical spines besides the apical pair ; spurs sub-
opposite, about the length of the tibial depth, set at an angle of 35-40
with the tibia and divaricating about 80, their tips incurved ; inner
middle calcaria a little longer than the outer, fully half as long again
as the others or as the spurs, but much shorter than the first tarsal
joint. Hind tarsi about two fifths the length of the hind tibiae, the first
joint about as long as the rest together, the second twice as long as
the third and with it shorter than the fourth. Cerci tapering regu-

VOL. xxx. (N. s. xxn.) 6



82 PROCEEDINGS OF THE AMERICAN ACADEMY.

larly, from a half to two thirds as long as the femoral breadth. Ovi-
positor fully two thirds as long as the hind femora, rather slender and
equal in the distal half, the distal teeth of the inner valves long,
slender, and arcuate, the proximal obsolescent.

Length of body, $ 17 mm., 9 12.5 mm.; antennae, $ circ. 36 mm.;
prouotum, $ 6.25 mm., 9 4.6 mm.; fore femora, $ 7.5 mm., 9 6.2
mm.; hind femora, $ 18 mm., 9 12.5 mm.; hind tibiae, $ 18.5 mm.,
9 12.5 mm.; ovipositor, 9.5 mm.

10 <?> 1 9- Islands in the Gulf of Georgia, between Vancouver
Isl. and the State of Washington, A. Agassiz ; Vancouver Isl., H. Ed-
wards ; Oregon ; British Columbia, G. W. Taylor in Bruner's coll.
Through misunderstanding Brunner von Wattenwyl has credited this
also to the State of Georgia.

40. CEUTHOPHILUS MEXICANUS, sp. nov.

Pallid, probably in life luteous, heavily overlaid with dark fuscous
markings ; pronotum mostly fuscous, with a mediodorsal luteous
thread, expanding near anterior and posterior margins into a small
rhomboid spot and with a large posterior central luteous spot in the
middle of each side, the extreme inferior margin also luteous ; meso-
and metanotum with a large central luteous spot on either side often
reaching the border posteriorly and a posterior median similar spot,
the two sometimes confluent and often very irregular ; abdominal seg-
ments, when darkest, with a large luteous spot on each side and a
median anterior one, but the fuscous is often largely reduced; legs
luteous, more or less infuscated, especially on the distal halves of
the fore and middle femora, the hind femora rather heavily marked
with fuscous in a scalariform pattern. Antennae very slender, at least
three times as long as the body, the legs slender and rather long.
Fore femora scarcely stouter than middle femora, a fourth longer than
the pronotum and half as long as the hind femora, the inner carina
with two spines, both long but especially the eubapical. Middle femora
with 1-2 spines besides a very long subapical spine on the front carina,
and the hind carina with 1-2 spines besides a long genicular spine.
Hind femora as long as the body and twice as long as the fore femora,
rather stout at base but slender in the distal third, nearly three times
as long as broad, with a few feeble raised points on the distal half of the
extreme upper surface, the outer carina with 1-4 very small distant
spines on the apical half, the inner carina with 8-10 minute points,
the intervening sulcus narrow. Hind tibiae straight, slender, somewhat
longer than the femora, armed beneath with a single subapical spine



SCUDDER. NORTH AMERICAN CEUTHOPHILI. 83

besides the apical pair ; spurs subopposite, the basal at the end of the
proximal fourth of the tibia, considerably longer than the tibial depth,
set at an angle of 35-40 with the tibia and divaricating about 100,
their tips incurved ; inner middle calcaria considerably longer than
the outer, more than twice as long as the others or as the spurs, and
nearly or quite as long as the first tarsal joint. Hind tarsi about
two fifths the length of the tibiae, the first joint as long as the rest
together, the second fully twice as long as the third and with it rather
longer than the fourth. Cerci rather long and tapering, fully as
long as the femoral breadth.

Length of body, 10 mm.; pronotum, 4 mm.; fore femora, 5 mm.;
hind femora, 9.8 mm. ; hind tibiae, 10.5 mm.

6 $. San Pedro, Cohahuila, Mexico, May 20; San Lorenzo, Coha-
huila, Mexico, found in a cave among mummies, E. Palmer.

41. CEUTHOPHILUS PALLESCENS.

Ceuthophilus pallescens Brun.!, Can. Ent, xxiii. 37-38 (1891) ;
Id.!, Publ. Nebr. Acad. Sc., iii. 32 (1893).

Very pallid luteous, marked with fuscous and blackish fuscous, the
latter in the posterior bordering of all the segments, the former in
obscure blotches on the pronotum and along its front margin, more
obscure in some specimens than in others; a mediodorsal luteous
thread breaks most of the fuscous markings of the body ; the legs are
very pallid luteous, sometimes infuscated on the distal portions of the
femora and especially in scalariform markings, never deep, upon the
hind femora ; the spines of the legs are all dusky tipped ; eyes black.
The antenme are slender and from twice to thrice the length of the
body, and the legs are rather long and slender. Fore femora scarcely
if any broader than the middle femora, about a fifth longer than the
pronotum and half as long as the hind femora, the inner carina with a
subapical spine sometimes accompanied by a shorter spine. Middle
femora with 4-5 delicate spines, the subapical longer than the others
on the front carina, and on the hind a similar series be-ides a not very
long genicular spine. Hind femora much shorter than the body, twice
as long as the fore femora, rather slender, being about three and a half
times longer than broad, tapering pretty regularly to the tip with no
genicular swelling, the surface with a few very scattered raised points
especially on the inner side and above beyond the middle, both carinas
minutely and rather distantly serrulate, the intervening sulcus slender.
Hind tibiae straight in both sexes, considerably longer than the femora,
rather slender, apically armed beneath with a series of three recum-



84 PROCEEDINGS OP THE AMERICAN ACADEMY.

bent spines besides the apical pair ; spurs subopposite, the basal beyond
the end of the proximal third of the tibia, fully as long as the tibial
depth, set at an angle of about 50 with the tibia and divaricating
about 90, feebly incurved at tip ; inner middle calcaria considerably
longer than the outer, twice as long as the others and nearly twice as
long as the spurs, but very much shorter than the first tarsal joint.
Hind tarsi fully two fifths the length of the tibia, the first joint fully
equal to the rest together, the second twice as long as the third and
with it as long as the fourth. Cerci slender and regularly tapering,
about as long as the femoral breadth. Ovipositor of exceptional
length, being nearly as long as the hind femora, very feebly arcuate,
slender throughout but especially beyond the proximal third, the tip
scarcely upturned more than the uniform arcuation and produced to
an angle of only about 40, the teeth of the inner valves more distant
than usual, aculeate but not long, arcuate.

Length of body, $ 8.5 mm., 9 18 mm. ; pronotum, $ 3 mm., 9 5
mm. ; fore femora, $ 3.5 mm., 9 6.1 mm. ; hind femora, $ 7.5 mm.,
9 12 mm. ; hind tibise, $ 8 mm., 9 13.5 mm. ; ovipositor, 11.25 mm.

1 , 2 9 . Hat Creek, Nebr., in wells ; Pine Ridge, Nebr., Aug. 4,
under timber ; Hecla, Wyo. ; all from L. Bruner. The $ from Pine
Ridge is rather immature.

42. CEUTHOPHILUS SYLVESTRIS.

Ceuthophilus sylvestris Brun.!, Bull. Washb. Coll., i. 126-127
(1885).

Nearly uniform mahogany brown, glabrous, very faintly and
broadly infuscated at the hinder margins of all the segments and on
the front margin of the pronotum, the lateral margins of the thoracic
segments very faintly bordered with obscure luteous ; legs uniformly of
a lighter tint than the body, the hind femora without scalariform mark-
ings. Antennae slender, more than twice as long as the body, the legs
moderately short. Fore femora no stouter than the middle femora,
scarcely longer than the pronotum, half as long as the hind femora,
the inner carina with a short subapical spine. Middle femora with
only a single small spine or occasionally a second on either carina
besides the posterior genicular spine. Hind femora moderately stout,
tapering regularly to the tip with no pregenicular constriction or genic-
iilar enlargement, fully three times as long as broad, twice as long as
the fore femora, with no raised points upon the surface, both carinae
(9) with the most delicate possible uniform and not crowded serrula-


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