filiform and becoming a little attenuated apically, with the apices
of all the joints subnodulose; black, with the scape flavous
beneath and variegated above. Thorax black, unevenly punctate,
with short white pilosity ; mesonotum somewhat dull, with its
notauli deeply impressed and their central lobe vertical ; meta-
thorax strongly costate, with the areola small and exactly



AC^NITUS. 43

quadrate, the basal area narrower and the petiolar short, laterally
sinuate, apically glabrous, and the lateral areas irregularly costate ;
apophyses large aud obtuse ; spiracles large, linear, aud circum-
costate. Scutellum black, deplanate and finely punctate throughout,
laterally carinate to the centre, with its basal fovea quinque-
carinate; postscutellum glabrous. Abdomen much narrower than
the thorax, with its apical halt' strongly compressed and laterally
clavate; three or four basal segments nitidulous aud impunctate ;
apices of all the dorsal and ventral segments very narrowly
testaceous ; basal segment elongate, centrally sulcate to its apical
third, with a row of punctures on either side and the spiracles a
little before its centre ; gastrocoeli obsolete, extreme anus testa-
ceous. Legs : anterior pair entirely stramineous, with the apices
of the bifid claws alone infuscate, front calcaria strongly curved ;
hind legs stout and elongate, black, with the trochanters flavescent,
femora except at apex fulvous, and the tarsi, except the simple
claws and basal half of first joint, stramineous. Wings uniformly
infuscate-hyaline with the external margin hardly darker ; radix
rufesceut, tegute black, nervelet obsolete ; the bifenestrate second
recurrent nervure intercepting the cubital very distinctly before
the single submarginal nervure; the first recurrent of hind wings
subopposite and emitting the apically curved nervellus from very
distinctly above its centre.

Length 13 millim.

SIKKIM (Col. O. T. Bingham).

Type in the British Museum.

This insect may prove to be the alternate sex of that last
described ; but, in view of the divergences of their frontal and
venational conformation, the scutellar and tibial colour and alar
intumescence, it were better for the present to treat them as
distinct, especially since the only individual I have seen of
A. alecto was captured by Bingham in Sikkim at an altitude of
4000 feet in April, 1894, or some thirteen hundred miles from
the Nicobar Islands.

12. Acaenitus xanthorius, sp. n. (Plate I, fig. 1.)

<$ 2 . A flavous species, with sparse black markings, and the
alar apices alone infumate. Head flavous, with the ocelli, apices
of mandibles, the distinct occipital border narrowly in the centre,
and in $ the entire vertex, black ; frons and vertex deeply and
isolatedly punctate, the former with the scrobes large, glabrous,
and centrally strongly carinate to the coarsely and rugosely
punctate face; clypeus similarly sculptured, apicallv truncate,
and in J not basally discrete. Antenna filiform and abruptly
obtuse apically, black, with the scape and basal flagellar joints
flavidous beneath ; in J , the 19th to 21st joints (far beyond
the centre) stramineous. Thorax evenly and distinctly punctate,
flavous ; of d 1 immaculate, of $ with a broad vitta on either
side of the deeply impressed notauli, a spot on the longitudinally



44 IC11XECMONIDJE.

subsulcate and anteriorly vertical central lobe, a dot before the
radical callosities and on the centre of the mesopleurae, the
minute and transverse areola, and the strongly costate external
arese entirely, black; metanotum glabrous, with longitudinal
costse emitted from beyond the centre of the external areas and
bifurcating to the apex at the obsolete apophyses, where they are
intercepted by the basally wanting costulae spiracles large and
linear. Swtellum not small nor laterally carinate, evenly and
not closely punctate, with pale pilosity. Abdomen nitidulous,
subglabrous and apically pilose, of $ fusiform, of d narrower;
flavous, with the base of the third and fourth segments
obsoletely black, $ with all the segments basally black except
the first ; bnsal segment finely punctate, gradually a little ex-
planate throughout, with subcentral spiracles ; venter flavous,
c? valvuke exserted, hypopygium of $ extending to the apex and
covering the base of the apically incrassate valvulaa ; terebra
as long as the abdomen. Legs flavous, the hind ones stout,
elongate, and in $ with a discal coxal spot; the tarsi, extreme
apices of trochanters, of femora, and base of their hardly curved
tibiae, black ; anterior claws bifid ; c? hind tarsi infuscate.
Wings hyaline, with all the apices alone infumate ; radix, tegulse,
and base of costa flavous ; costa and stigma black ; areolet and
nervelet wanting : second recurrent emitted from external cubital
only slightly in J > and very distinctly in 5 , beyond the single
submarginnl nervure ; first recurrent of lower wing subopposite,
emitting the curved nervellus from slightly (in c? distinctly) below
its centre.

Length 8-10 millim.

SIKKIM, iv.-vi. 1900 (Col. 0. T. Bingham).

Type, ? , in the British Museum.

Described from two males and a female.

This distinct species belongs to Forster's subgenus Phcmolobus.
and, with the following, appears to bear the same relationship to
Accmitus that Xantliopimpla has to Pimpla.

13. Acaenitus biumbratus. sp. n.

$ . A flavous species, with sparse black markings, and two
infumate alar marks. Head flavous, with the ocelli, apices of
mandibles, and the distinct occipital border centrally, black ;
frons and vertex deeply and somewhat sparsely punctate, the
former with the scrobes large, glabrous, and centrally strongly
carinate to the centre of the coarsely and rugosely punctate face ;
clypeus similarly sculptured, apically truncate, and basally
indistinctly discrete. Antenna abruptly obtuse and slightly
incrassate apically, black, with the ecape and basal flagellar joints
Havidous beneath. Thorax evenly and distinctly punctate,
flavous, with a broad stripe on either side of the deeply impressed
notauli, a striolate spot at the base of the entire and anteriorly
vertical central lobe, a dot behind the tegula?, and the narrow,



AC2ENITUS. COLLYHIA. 45

strongly costate, external areae entirely, black; metanotum
rugulose, with the costae indistinct and obsolete, apophyses
distinct but obtuse, spiracles linear and short. Scutellum not
small, nor laterally carinate beyond its multicostate basal fovea,
evenly and not closely punctate, with pale pilosity, and its apical
third, like that of the glabrous postscutellum, black. Abdomen
nitidulous, finely and closely punctate, apically pilose and sub-
compressed ; flavous, with the base of all the segments, except
the first, basally black ; first black on either side before its centre ;
venter flavous, hypopygium extending to the apex and covering
the base of the apically black, but not incrassate, testaceous
valvulae ; terebra as long as the abdomen. Leys testaceous ; hind
pair stout and elongate with the coxa? basally above, the onychii,
and the base of the hardly curved tibiae, black ; anterior claws
bifid. Winys hyaline, the anterior pair with their apices broadly,
and a substigmal spot deeply, inf iimate ; radix, the anteriorly
black-spotted tegulae, and the base of the costa, flavous ; costa
and stigma black ; areolet wanting, nervelet distinct and nearly
us long as the submarginal nervure, which is emitted from the
cubital but shortly before the recurrent ; first recurrent of lower
wings exactly opposite, emitting the curved nervellus from its
centre.

Length 8 millim.

SIKKIM (Col. C. T. Bingham).

Type in the British Museum.

The distinct nervelet, strongly transverse intermediate segments
and elongate hypopygium place this species in Forster's subgenus
Chorischizus, though it is certainly congeneric with A. xanthorius.
with which its coloration is almost identical.



Genus COLLYRIA, Schiod.

Coltyria, Schiodte (nee Brulle), Mag. Zool. 1839, Ins. p. 10.
Pachymerus, Gravenhorst, Ichii. Eur. iii, 1829, p. 721 (part.).

GENOTYPE, Pachymerus calcitrator, Grav.

Head cubical, with the eyes pilose and somewhat large ; cheeks
buccate, not elongate, with the costa sharply iuflexed ; clypeus
hardly discrete, apically truncate and centrally produced. An-
tenna? shorter than the head and thorax; scape a little excised,
nagellum basally subattenuate. Thorax elongate ; pronotal
pomia3 conspicuous above ; notauli apically distinct ; meso-
sternum elongate, with no lateral sulci ; metathorax long, with
distinct longitudinal, but no transverse. costae ; spiracles small
and obliquely linear. Abdomen elongate and apically subcom-
pressed; basal segment parallel-sided, with central spiracles;
ventral valvulae not vomeriform, but covering the base of the
short and straight terebra. Anterior legs slender ; the hind
pair strong and stout, their tibiae straight and longer than the
iucrassate femora, calcaria short, tarsi elongate with the claws



46 ICHXEUMONTD.E.

and pulvilli stout. Wings with the stigma narrow and with no
areolet ; apical abscissa of radial nervure nearly twice as long as
the basal ; lower angle of discoidal cell subacute ; fenestne dis-
creted and not small. Lower wings with the first recurrent very
strongly postfurcal and intercepted by the uervellus far above its
centre ; second recurrent centrally pellucid.

Range. Europe, North Africa, China and Ceylon.

This genus was for long treated as appertaining to the OPHIO-
KIXJB ; its stout and elongate hind legs, very indistinctly sub-
petiolate abdomen, cubical head, and the conformation of the
mouth parts and antennae certainly ally it far more closely with
Acttnitus, as was indicated by Thomson in 1877 ; and it appears
to bear only a very distant analogy with Pristomerus vulnerator,
its congeneric species in the Gravenhorstian system, which is a
true Ophionid aud closely related to the genus Cremastus.

Motschulsky's description of our two species is so short and
vague that it is quite impossible to tell nowadays whether they
should be placed in the PIMPLIKJE or OPHIONIN^E ; but, since no
mention is made of femoral dentation, it is far more probable
that, if correctly placed in the Gravenhorstiau genus by their
author, they should now find a place in that of Schiodte ; but 1
have seen nothing similar from Ceylon.

Table of Species.

1 (2) Shining ; antennae basally and petiolar fascia

red unifasciatus^ Mots.

2 (1) Dull ; antennae basally infuscate ; petiole

black gracilipes, Mots.

14. Collyria nnifasciatus, J/ota.

Pachyments unifasciatus, Motschulsky, Bull. Soc. Imp. Nat. Moscou,
1863, p. 29.

An elongate, nitidulous, black species, with the head nearly a
quarter the length of the whole body in breadth. Head deplanate
and shining, with the clypeus densely and finely punctate and
pilose ; eyes large, with a brazen reflection ; palpi testaceous-red.
Antennas basally testaceous-red. Thorax with the rnesonotum as
broad as the head, glabrous, with the notauli deeply impressed and
basally convergent. Abdomen slender, compressed and subtri-
angularly dilated posteriorly ; basal segment with the petiole
elongate and black, with a testaceous-red fascia. Legs testaceous-
red, with paler coxal marks ; the hind femora simple, narrow and
centrally, like the apices of their tibiae, subinfuscate.

Length 4 raillim. Sex not noted.

CEYLON : Nuwara Eliya (teste Motschulsky).

It should be noted that in the original descriptions of this and
the following species their author appears to have transposed our
modern rendering of the terms pro- and mesonotum ; thus, he
writes of P. unifasciatus " pronoto capitis latitudine, longitudi-
naliter biimpresso " and of P. ymcilipes as " pronoto subovato."



COLLYRIA. COLEOCENTHUS. 47

15. Collyria gracilipes, Mots.

Pachi/merus gracilipes, Motschulsky, Bull. Soc. Imp. Nat. Moscou,.
1863, p. 30.

An elongate, narrow, black and hardly shining species, with the
head nearly one-fifth the length of the whole body in breadth.
Head deplauate, subtrans verse and testaceous-red, with only an
occipital mark black ; eyes normal, oblong and deep black.
Antennae nearly as long as the body and basally infuscate. Thorax
elongate ; pronotum ami all the pleurae testaceous-red ; rnesonotum
subovate, convex, centrally impressed and rufescent ; metanotum
elongate, shining and apically constricted. Abdomen narrow,
compressed, shining, posteriorly dilated, discally more or less
infuscate, with its centre and venter testaceous ; basal segment
black and parallel-sided. Legs slender, testaceous and with
fuscous markings, with the hind femora narrow. Wings ample,
with the large stigma infuscate-testaceous and the nervures dark.

Length 5 millirn. Sex not noted.

CEYLON : summit of Mount Patannas (teste Motschulsky).

The large alar stigma, normal-sized eyes and elongate antennae
render this species probably more closely allied to Pristomerus,
Curt., than to Collyria, Schiod. ; it may be the alternate sex of.
Pristomeridia marginicottis, described by Cameron in 1907 (Tijds.
Ent. p. 110) from Sikkiin.

Genus COLEOCENTRUS, Grav.

Coleocentrus, Gravenhorst, Ichn. Eur. iii, 1829, p. 437 ; Thomson,

Opusc. Ent. viii, p. 732.
Macrus, Gravenhorst, op. cit. p. 707.

GENOTYPE, Ichneumon excitator, Poda.

Head transverse and subbuccate, eyes oval ; cheeks not short,
genal costa inflexed : clypeus short and discrete, apically produced
in the centre ; mandibular teeth subequal. Antennae filiform and
shorter than the body ; those of <$ slender. Thorax subcylin-
drical ; mesothorax laterally subquadrate, notauli deeply impressed
and reaching the centre of the mesonotum, mesostenium not trans-
verse with no lateral sulci, epicnemia obsolete ; metathorax rugose,
with a few longitudinal costae only, spiracles distinct and oval.
Scutellum triangular and strongly convex. Abdomen snbsessile,
convex, as broad as and twice as Jong as the thorax, apically
compressed ; ventral valvulae of $ acute and vomeriform ; basal
segment subparallel-sided and distinctly deplanate ; the second
and third with lateral oblique impressed lines, and in c? the
incisures broad and deeply impressed ; seventh and eighth large
and produced ; anus subacuminate ; terebra nearly as long as the
body. Legs long and somewhat slender. Wings ample, with the
areolet small, triangular and petiolate ; upper wings with the
lower basal nervure pellucid, the upper basal strongly oblique and
not curved ; radius emitted from before the centre of the narrow



48 ICHXEUMOXID.!.

stigma and longer basally than apically; fenestrse minute and
broadly discreted; recurrent nervure hardly sinuate; lower wings
with the first recurrent strongly postfureal.

Range. Europe, Sikkim, Burma, Japan, Malay Archipelago,
Tasmania, Texas, Canada.

The head, thorax, and legs resemble those of EphtaUct, but
the abdomen aud wings are more similar to those of certain

OPHIONIN-S.

This genus, a $ of which is figured by Ratzeburg (Ichn. lorst.
iii, p. 94), was placed by Gravenhorst under Banchiis and originally
contained females only,' since he erroneously relegated the males to
his Ophionid genus Macrus. They were united by Wesmael, in
his " Notice sur les Ichneumonides de Belgique appartenant aux
genres Metopius, Banchus et Coleocentrus" in 1849, in which he
states the opinion that they belong rather to the PIMPLIN.E.
Thomson retains the genus in this position on account of the
oblique incision of the basal segments, though indicating the
affinity shown with the OPHIOXIN.S by the apically compressed
abdomen.



16. Coleocentrus mollerii, Bing.

Coleocentrus mollerii, Bingham, Journ. Bomb. Nat. Hist. Soc. 1898,
p. 116, pi. A, tigs. 4, 4a,



A very large black species, with profuse flavous markings.
Head black, with the clypeus, face below antennae, a dot at the
frontal orbits, and the cheeks flavous ; vertex with a few shallow
punctures. Antenna elongate and filiform, with the scape intu-
mescent, flavous beneath and deeply emarginate externally ;
fl:igellar joints apically oblique. Thorax black, with the pronotum
anteriorly and at its hind lateral angles, two short discal stripes on
the oval,* convex and transversely rugose mesonotum, mesopleurae,
the whole of the laterally flat, posteriorly rounded and apically
obliquely sloped metanotum, and large spots on the metapleuraB,
flavous. Scutellum punctate with its base, and a dot on either
side, flavous* ; postscutellum very small and compressed. Abdomen
nitidulous, with all the segments flavous- banded before the apex,
the basal ones depressed and deplanate, the apical subcompressed ;
the two basal segments discally glabrous, the remainder finely
punctate above at the base ; flavous bands of the fourth and
fifth segments laterally dilated, that of the sixth modified into a
transverse diamond shaped spot ; terebra a little longer than one
and a half times the length of the body (51 millim.), with the
valvulae ferruginous. Legs black ; the front ones with the coxa?
and trochanters apically, the femora in front, and whole of tibiae
and tarsi, flavous ; posterior legs with coxal spots, the trochanters
huskily, the intermediate femora externally and apically, the apical
half of the hind ones, the apical half of the intermediate tibia3 and
the centre of the hind ones, flavous ; posterior tarsi ferruginous.



COLEOCENTIUJS. (EDEMATOPSIS. 49

Wings deep brownish flavous, with the nervures piceous ; areolet
sessile and entire ; nervellus intercepting recurrent nervure of
lower wing at its junction with the median.

Length 33 millim.

SIKKIM; TE^ASSEBIM.

Type. Location unknown.

I am not quite satisfied that my friend Col. Bingham placed this
female in its correct genus ; he says that the terebra is " emitted
from the apical segment, which with the next three segments,
looked at from the ventral side, are ensheathed one within the
other " ; but this does not prove that its base is covered by the
hypopygium ; and his description of the " transversely plicated
and rugose" mesonotum, with the figure of the sessile areolet and
position of the nervellus, point rather to its inclusion in Nhyssa.
Cameron (Zeits. Hym. Dipt. 1903, p. 302) is of the same opinion.

This species is probably widely distributed.



Genus (EDEMATOPSIS, Tsdiek.

(Edemopsis, Tschek, Verb. z.-b. Ges. Wien, 1868, p. 276 ; id., op. cit.

1870, p. 430.

(Edimopsis, Thomson, Opusc. Ent.ix, 1883, p. 907.
(?) Hybophanes, Furster, Verb. pr. Kheinl. 1868, p. 216.
(Edematotms, Morley, Ichn. Brit, iii 1908, p. 268.

GENOTYPE, Tryplion scabriculus, Grav.

Head subglobose ; eyes small, entire, shortly and sparsely
pilose ; frons convex, mandibles bidentate, with the lower tooth
the shorter ; clypeus large and stout, apically broadly rounded or
subtruncate ; that of d 1 nearly flat, as long as the face and not
broader than long, discrete, with the basal fovea on either side
and apically subreflexed ; clypeus of $ semicircularly discreted
basally, very strongly convex and produced, with a fine transverse
carina, intercepted by a conspicuous central subglobose tubercle,
extending across its centre. Antennae slender, filiform and a little
shorter than the body. Thorax stout and subovate, with distinct
notauli ; metathorax apically attenuate and produced above the
hind coxse ; upper and petiolar arese present ; spiracles circular
and situated between the centre and base. Scutellum deplanate
and apically obtuse ; its basal fovea multistriate. Abdomen sub-
petiolate, with the second and third segments often punctate-
rugose ; that of J sublinear, with all the segments longer than
broad, the last apically attenuate; that of $ linear-subfusiform,
with the three basal segments elongate and the remainder tele-
scoped, apical ventral segment covering base of terebra, which is
straight and not quite half the length of the abdomen. Legs
slender, with the tarsal claws simple. Wings of normal breadth,
with no areolet.

Range. Europe, Assam.

This genus differs materially from the XORIDIXI in its close-

E



50

lilting mandibles, very large and not apically impressed clypeus,
normally broad wings, and shorter terebra. I have found it
necessary to modify but very slightly the generic diagnosis, in
order to include the following Oriental form, which differs in
having the rnetathorax not longer than high, in its less clearly
defined area?, smoother abdomen and the relative lengths of its
segments. The alar nervures are also peculiarly disposed, the
internal cubital coalescing with the first recurrent at its junction
with the anal in such a manner that the anal is continuous with
he median; in the hind wing the nervellus and all the apical
nervures are wanting.

Its position is still a moot point ; though strictly speaking the
subsessile, and often rugose, abdomen, lack of all trace of areolet
and distinctly exserted terebra, place it incontrovertibly in the
PIMPLIN^E, among which its cubical head and elongate legs ally it
most closely with the XoBiDEfi. Tschek says (loc. cit.) his genus
is " a further contribution to the Austrian PIMPLID.*: " ; and
Bridgman (Entom. 1879, p. 129) " that it ought to remain among
the PIMPLIDJE, and in Holmgren's section ii.A.a." ( = XoRimxi).
Thomson, however, places it in his subtribe THYMABLDES of the
TRTPHONINJE, and no doubt can remain that, wherever placed, it
cannot be separated from Thymaris, a genus of far less Pimplid
facies. On the whole, I am inclined to think with the last author
and Gravenhorst, that, in spite of its cubical head and exserted
ovipositor, it is a true Tryphonid and certainly not one of the
LISSOXOTINI, among which it is placed as synonymous with Hybo-
phanes by Ashmead, who probably followed up Marshall's position
for it at the end of Phytodietus. I still prefer to treat it here in
its strict and perhaps more unnatural position in the PIMPLED,
which is further favoured by its now well authenticated ecto-
parasitic habits.

1 7. (Edematopsis apollos, sp. n.

cJ . A flavous species, with only
the eyes, ocelli, antennae apically
and before their white band, three
mesonotal stripes, basal scutellar
fovea, and the centre of the meta-
notum basally, black. Head broader
than the thorax and strongly
nitidulous, with only the face

A./flV~V obsoletely punctate. Antenna

/jf\\ slender and basally subattenuate,

I / I fl. 8 \ with a conspicuous white band

beyond their centre. Thorax :
mesothorax and scutellum nitidu-
lous, with the notauli deeply
impressed, centrally coalescent
Fig. 9. an d dividing the elongate deep

(Edematopsis apottot, Mori. bkck stripes; metathorax cori-
aceous, with only the transverse




(EDEMATOPSIS. AC^XITELLUS. 51

petiolar area distinct ; lateral carinae strong. Abdomen linear and
testaceous, with two small black dots on the apical third of the
second segment, which is thrice as long as broad and half as long
again as the equally finely sculptured third segment ; basal
segment very slender, rather more than twice as long as apically
"broad and strongly nitidulous ; remaining segments pubescent,
obsoletely punctate and dull ; anal styles testaceous, and half the
length of the basal segment. Legs slender and hardly elongate.
Wings hyaline, with the radix and tegulse flavous, stigma luteous
and the nervures piceous, with the external cubital pellucid, and
the apices of all those in hind wings wanting.

Length 8 millim.

ASSAM : Khasi Hills, 6000 ft., v. 1903 (lioidand Turner).

Ti/pe in the British Museum.

Described from a single specimen.



Genus ACJENITELLUS, gen. nov.

Head discally cubical, with the eyes somewhat prominent, but
not large or internally emarginate ; ocelli small and not far apart ;
face convex and strongly transverse ; clypeus deeply separated
basally and broadly rounded apically, with its disc glabrous ; man-
dibles elongate, somewhat slender and unideutate ; cheeks very
short. Antenrue of d 1 longer than the body, filiform, centrally
white-banded, with their apical joints discreted and subattenuate.
Thorax short and stout ; notauli very deeply impressed and dis-
cally coalesced ; metathorax very short, with strong and entire
areae. Scutellum neither small not carinate, its apex obtuse.
Abdomen but slightly longer than the head and thorax, subsessile,
glabrous, nitidulous, deplanate in <3 and distinctly compressed
in ; basal segment glabrous and very gradually explanate from
base to apex, its disc elevated and the spiracles before the centre ;
second and third segments quadrate, rectangular and of equal
length, the following transverse; terebra stout and nearly as long