costis spiralibus obtusis, distantibus, in spira circ. iv. f circa basim
prolongatam cire. vii., aliis minoribus interdum intercalantibus;
interstitiis secundum incrementa, decussatis; apertura sub-
quadrata; columella plicis duabus declivibus anticis et costulis
basalibus ornata; labio nullo. Long. -68, long. spir. -34, lat. 34,
Hab. Neeah Bay; one specimen and fragment (Swan).
56. Velutina prolong ata.
V. testa majore, subplanata, tenuiore, carnea, spira minima ; anfr. iii.
13 Dr. P. P. Carpenter on new Forms of Mollusca.
et dimidio, rapidissime augentibus ; vertice vix conspicuo ; anfr.
nit. antice valde porrecto ; regione colutnellari incurvata ; labio
valido ; axi baud rimata ; epidermide tenui, rugis incrementi or-
nata, spiraliter baud striata. Long. '1, long. suir. '1.5, iat. *95,
Hub. Nceah Bay ; rare (Swan}.
NEW FORMS OF MOLLUSCA
THE VANCOUVER DISTRICT.
PHILIP P. CARPENTER, B.A., PH. D.
From the Proceedings of the Zoological Society of London, pp. 201-204,
February 14, 1865.
DIAGNOSES or NEW FORMS OF MOLLUSCA FROM THE VAN-
COUVER DISTRICT. BY PHILIP P. CARPENTER, B.A., PH.D.
TEBEBBATULA UNGUICIJLA, n. s.
T. t. juniore " Terebratulinse capiti-serpentis" simillima, sed la-
tiore, subtmangulata ; punctis valde conspicuis; costis con-
spicuis, inter dum obtusioribus, aliis intercalantibus ; intus,
amento suboctiformi, postice aperto, cruris diagonalibus cardini
affixis : testa adulta valva inferiore subrotundata, marginem
versus hand planata ; umbone valde tumente, latiore ; striis
radiantihus, ut in '* T. capite-serpentis " conspicuis ; marginibus
crenulatis, hand undatis ; intus amento majore, bisinuato 3 dor-
saliter hand continuo, calcaribus duobus munito.
Long. 4 6, lat. *5, alt. '3 poll.
Hab. San Diego, 6 fm. ; Monterey, not rare in 20 fm., (in Cali-
fornia State Geological Survey) Cooper. Neeah Bay (valve), Swan.
The specimens sent by Dr. Cooper were all of small size, and, from
the intercalation of riblets near the margin, clearly immature. They
presented the incomplete loop of the restricted genus to which Dr.
Cooper affiliated them. Notwithstanding, as both Davidson and Wood-
ward state that the young of the British species has the loop similarly
open, it remained doubtful whether this might not prove conspecific.
Messrs. Reeve and Hanley unhesitatingly pronounced them to be
" caput-serpentis, jun.," the latter gentleman stating that they pre-
sented the peculiar form of that species which belongs to the Medi-
terranean examples. Dr. Forbes, however, was fortunate enough to
2 DR. P. P. CARPENTER ON NEW MOLLUSCA.
obtain an adult shell, which passed into the Cumingian Collection
Having removed the animal matter with great care, the loop \vas
found to retain the form seen in the young shell, only perhaps stil
more open. This is the first recent species of the genus which has
been discovered with a sculptured surface, and affords an instructive
lesson not to rely on external characters.
Terebratula unguicula : 1, 2, outside views of Mr. Cuming's adult specimen,
natural size : 3, 4, inside views of the upper valve, slightly magnified.
The outline of the adult is much rounder, and the margin blunter,
than in T. caput-serpentis. Inside, the noncompletion of the some-
what w-shaped loop is a very obvious character. This is large ir
proportion, extending to about two-fifths of the length and one-
third of the greatest breadth of the shell. It is bent upwards in the
middle, as seen from the partly opened valves ; with a double wave at
the sides, as seen from the direction of the opposite valve. Two spurs
ascend from the crests of the side waves, as though preparing tc
complete the loop. The similar Terebratella angustata from Japan,
when of the same size as Dr. Cooper's specimens, has the loop quite
Pholadidea : valvis postice in calycem testaceum planatum pro*
longatis ; calyce coriaceo nullo.
NETTASTOMELLA DARWINII, Sby. (diag. auct.).
N. t. minore, elongata, tenuissima ; parte postica costis radian*
tibus acutioribus circ. vii. et laminis concentricis acutissimis t
distantibus, antice continuis, elegantissime ornata; rostris pla
* Dr. Cooper having forwarded for my inspection a large aud beautifully pn-
feet specimen of the true Waldheimia californica, I have compared it with the
%eries of the very variable W. globosa in the Smithsonian Museum, undoubtedly
from Orange Harbour. The California shell, however, has a strong brownish-
red tinge, and does not display the beautiful veining of the Maghellan species.
t Th. t'fjrra, a duck, cropa, mouth. The name Netastoma, given in the
' Brit. Assoc. Report.' 1863, being preoccupied in another subkingdom, according
to Dr. Cooper, it is thought necessary to vary the termination.
DR. P. P. CARPENTER ON NEW MOLLUSCA.
natiSy postice diver gentibus, striis incrementi crebris acutis,
aliter hand sculpta ; parte antica t. jun. aperta, adultcK clausa ;
clausis tenuissimisy secundum incrementa undulatis t super urn-
bones prolongatis, umbilicos postice formantibus ; epidermide
fugaciy tenui, pallide viridi.
Hab. Monterey, Rich. ; Vancouver, Lord j S. Diego, Cooper.
= Pholas darwiniiy Sby.
= Jouanettia darwiniiy Mus. Cuming.
= Parapholas penita, Tryon, Mon. Phol.
This remarkable shell differs from Jouanettia in having both
valves equal; from Pholadidea proper in having no coriaceous
cup, its place being supplied by a flattened prolongation from
each valve, like a duck's bill in miniature. In Mr. Lord's specimen
(preserved in the British Museum), though the valves are closed, the
prolongations are widely divergent, as when the bird utters its cheer-
ful " quack." The loose, .thin epidermis appears to have covered the
bill as well as the valves. Mr. Tryon had probably not seen a speci-
men, else he could hardly have affiliated so very 'different a shell to
Pholadidea penita. The original specimen is said to have come from
D. t. tenuissimay planata, elliptica y Machcerceformi, utroque latere
hiante ; cinerea, epidermide fortiore induta ; marginibus regu-
lariter excurvatis ; umbonibus haud conspicuis, ad duas inter
quinque paries longitudinis postice sitis : intus cartilagine
spathula elonaata, dorsum versus utraque valva decliviter sita t
a ligamento lamina extante tenuissima separata ; dente car-
dinali laminato, extante, curtiore ; lateralibus vix conspicuis ;
sinu pallii ovali, fere ad medium porrecto.
Long. 177, lat. -85, alt. -34 poll.
Hab. Vancouver's Island (Forbes).
The only other species of Darina known is from the Straits of
Maghellan. The northern shell may have been passed over as the
young of Machcera patula, to which it bears a strong external re-
S. t. subovaliy tenuiore, subplanata, albida, epidermide pallide
olivacea induta ; iota superficie rugis concentricis t crebris,
valde obtusisy et undis incrementi interdum majoribus, ornata ;
marginibus subcequaliter excurvatis y maxime ventrali : intus
car dine tenuiore y dente antico elongato ; sinu pallii parvo t ad
trientem interstitii porrecto, latiore.
Long. 2-65, lat. 2'05, alt. M5 poll.
Hab. ? Vancouver, ? Japan (Mus. Cuming).
A very distinct species, in shape and hinge not unlike Callista t but
without lunule. It is more rounded and flatter than the three ty-
pical California!! species, and known at once by the very small mantle-
bend. From four to six blunt riblets are seen on each of the very
204 DR. P. P. CARPENTER ON NEW MOLLTJSCA.
blunt waves of growth. The shell was sent me as from Dr. Forbes's
Vancouver collections, and is so quoted in the Br. Assoc. Rep. 1863,
p. 607 ; but Mr. Cuming subsequently stated his belief that it came
from Japan. It may be allowable to state that many of the species
included in Saxidomus by authors are more correctly rough forms of
Tapes, of the decussata-type ; the true Saxidomi differing from that
genus (as Callista does from Venus) in having an additional pseudo-
lateral anterior tooth. This is very evident in theyourig shell, which
has a much rounder outline than the adult, and can scarcely be
distinguished from Callista, except by the absence of lunule.
NEW SPECIES AND A NEW GENUS OF MOLLUSKS,
THE REIGEN MAZATLAN COLLECTION;
WITH AN ACCOUNT OF ADDITIONAL SPECIMENS PRESENTED TO
THE BRITISH MUSEUM.
PHILIP P. CARPENTER, B. A., PH.D.
From the Proceedings of the Zoological Society of London, pp. 268-273,
March 14. 1865.
( 253 )
DIAGNOSES OF NEW SPECIES AND A NEW GENUS or MOL-
LUSKS FROM THE REIGEN MAZATLAN COLLECTION : WITH
AN ACCOUNT OF ADDITIONAL SPECIMENS PRESENTED TO
THE BRITISH MUSEUM. BY PHILIP P. CARPENTER, B.A.,
After the publication of the British Museum Mazatlan Catalogue,
the backs of several fresh Spondylus-valve.s were examined by Mr.
R. D. Darbishire and myself. Among the specimens were several
tvhich were deemed worthy of being added to the national collection;
they were deposited there, with a MS. appendix to the Catalogue,
in 1858. As it is not judged necessary to print this separately, I
have (with the permission of Dr. Gray) transcribed what should be
placed on record, in hopes that it may not be judged out of place
in the * Proceedings/ Those who use the Mazatlan Catalogue are
requested to observe not only the corrections in the Appendix,
pp. 547-552, but also those made in the Review of Professor C. B.
Adams's Panama Catalogue, P Z. S. 1863, p. 339; and in the
British Association Reports, 1863, pp. 5-43 <? seq. The numbers,
both of species and of tablets, are continued from the Mazatlau
Catalogue, and correspond with those in the Report. The student
of the Gulf fauna should also consult the account of Mr. Xantus's
T) R . p. p. CARPENTER ON NEW SPECIES
('ape St. Lucas shells in the 'Annals Nat. Elist.' 1864, and in the
Report, pp. 616-026*.
704. CELLEPORA AREOLATA, Buskf.
Tablet 2540 contains a specimen on Omphalius ligulatus,
705. MEMBRANIPORA ?FLEMJNGII, Buskf.
Tablet 2541 contains a group on O. liyulatus.
* The following additional specimens from the Reigen Collection have been
presented to the British Museum .
12*. A group on Omphalius ligulatus.
13*. Lepralia adpressa and Membranipora, sp. ind., on ditto.
42. Young opposite valve of t Solecurtus , perhaps conspecific.
201*. Four young valves (smallest '05 by -034) probably of this species.
266*. Minute transparent valve, '028 across, teeth unformed; perhaps of
358*. Two specimens ; margin irregular.
594*. Several specimens in Uvanilla unguis ; one, not having room within, has
made a case for itself outside the Uvanilla.
642*. A pair, -3 by -15 ; probably an older state of the same species, Barbatia
60*. A minute, transparent valve, -045 by '024, without teeth ; resembling
"? Saxicava fragilis, Nyst," Jeffr., in ' Ann. Nat. Hist.,' Aug. 1858.
486*. A young shell, -06 across, laid open ; crowded inside, especially near the
umbones, with a pinkish mass of young ones, about -0018 in length.
500. A younger pair, much more transverse, transparent, without concentric
ridges, the lateral teeth in one valve being simply the raising of the
833*. Two young specimens, nestling among Nullipore on Fissurella alba.
869*. Two specimens, with egg-cases arranged in pattern like Orbitolitcs.
876*. One specimen, curiously mended after fracture.
877*. One specimen, with columella curiously contorted.
1023*. One specimen, with ribs rounded and aspect of Siphonaria lecanium ;
probably a distinct species.
1058*. One young specimen, probably conspecific, though only '07 by '047;
there is no trace of spire.
1059*. Three specimens ; broad form.
1468*. Fragment of Spondylus calcifer, with basal supports of Hipponyx ?ser
ratus, in burrow of Lithophagm plumula.
1795*. Two specimens with five intercalary teeth.
1834*. One specimen with the canal bent back, as in Cassidaria.
2221*. One specimen, mended after severe fracture.
2223*. One specimen; columellar fold bifid.
2224*. Two specimens ; columella bent and straight.
2225*. One specimen ; labrum thin.
2226*. One specimen ; ribs close.
2376*. One specimen, dwarf form ; nodulous, as in N. nodulifera, Phil.
2516. An opposite larger valve, since found, in which there is only one distinct
posterior tooth, and the anterior hooked tooth is separating into two.
[2534. One specimen of Vitrinella f ttricarinata,]\m.., of which the ribs are
nodulous in the young state. If rightly determined, this adds nc. 710
to the list of species.]
2536. A nuclear shell, -046 across, of Naticoid shape, very finely striated in each
direction. It is probably a young Hipponyx
t Both of ttiese species were kindly identified by Mr. Q-. Busk.
OF MOLLUSKS FROM MAZATLAN.
Genus CYCLADEI IA.
Tata bivalvis, tennis, tzquilateralis, cequivalvis, hand hians, um~
bonibus planatis. Lig amentum tenuissimum, externum. Cardo
linea curvata, dent. lat. distantibus, card, transversis, hand
56. CYCLADELLA PAPYRACEA, n. sp,
C. t. tenuissima, subdiaphana, epidermide tenui induta, planata t
suborbiculari ; concentrice fortiter lirata, liris rotundatis, intus
excavatis; tota superjicie hneis granulosis radiantibus creber-
rimis minutissime ccelata; dent. card, i.-ii. transversis, mar-
gini dorsali subparallelis ; dent. lat. validis.
= " Tellina leburnea, Hani." (fragments only), Maz. Cat. no. 56.
Mr. Hanley kindly sent for my inspection a perfect pair (as
" Lepton "), which he had found nestling in a burrow in Spondylus.
The hinge more resembles Cyclas (Lam.) than any other known
genus. Its great peculiarity is, that the cardinal teeth, instead of
radiating from the umbo, fall in the curve of the hinge-line, as
though uniting the lateral teeth. The shell is too thin (being deeply
indented within by the concentric waves) to make out the pallial
line ; but no trace of sinus is visible. It may therefore rank, provi-
sionally, under Kelliadce, although in other respects its affinitiea
appear to be with (Edalia and Cooperella. The ligament appears
little more than a prolongation of the epidermis. Beside the trans-
verse cardinal teeth, there is in each valve a curved line, slightly
raised, like the end of a finger-nail, which bounds what would be the
lunule in other shells.
Long. -1, lat. -123, alt. -045.
Hab. Mazatlan ; one perfect specimen from Havre Collection
(Mus. Hani.) ; fragments, Liverpool Collection,
706. ?MONTACUTA OBTUSA, n. Sp.
?M. t. planata t valde incequilaterali, subrhomboidea ; subdia-
phana sen chalcedonica, hand punctata, Itevi; marginibus pie-
rumque regulariter excurvatis, dorsali recto y umbonibus haud
prominentibus ; cardine, vtraque in valva, dente uno cardinad
et fossa ligamentali ; dent lat. altera valva elongatis t reclis,
altera vix conspicuis.
Differs from ? M . dioneea in the elongation of the lateral teeth,
and in the possession of a distinct cardinal tooth in each valve.
Long. 047, lat. -06, alt. -01.
Hab. Mazatlan ; two fresh specimens, Liverpool Collection*
Tablet 2530 contains the larger specimen; the other is trans
696. PECTUNCULTJS, sp. incu
Tablet 253 1 contains a minute valve, '033 across ; outside *r*.v
close, prominent concentric ridges, foliated by about twenty-frm
271 DR. P. P. CARPENTER ON NEW SPECIES
rounded ribs, which are evanescent near the umbo. Inside with a
very few strong teeth, developed in a curved line.
698. SCISSURELLA RIMULOIDES, n. Sp.
S. t. rapide augente, albida, tenuissima ; apice celato ; anfr.
in., radiatim liratis, liris subdistantibus, acutis, obliquis ; um-
bilico magno; labro derlivi, haud Jisso, sed apertura postica,
ut in " Rimula" formata, subquadrata, elongata; liris trans-
versis gradus testa increscentis dejinientibus ; peritremate con-
Only one specimen was found of this beautiful little species, the
first known from America. It looks like a Velutina crossed by
sharp ribs in the direction of the slanting mouth. In the first whorl
*iie ribs are very close. It then assumes its normal sculpture, but
there is nearly a whorl before there is any trace of incision. This
appears to have begun as a slit, which was afterwards closed up. A
band, marked off by ten transverse ribs showing stages of growth,
encircles the shell as far as the hole, which is long find somewhat
octangular; but there is no band between the hole and fhe outer
iip. The shell furnishes a complete transition to Rimula. It is
preserved on tablet 2532.
Long. -023, long. spir. '003, lat. '03 ; div. 140.
Hab. Mazatlan ; off Spondylus calcifer ; Liverpool Collection.
699. VlTRINELLA ORNATA, n. Sp.
V. t. subdiscoidea, diaphana, tenuissima; anfr. iv., quorum iii.
primi nucleosi, insculpti ; ultimo carina maxima circa penphe-
riam ; postice subangulata, rugis radiantibus et striohs spi-
ralibus ornata ; antice carinata t carina nodosa ; basi carina
altera et ruais radiantibus ornata; umbilico angulato, satis
magno ; labro a carina indentato.
Long. -015, lat. '028 - 035 ; div. (circ.) 175.
Hab. Mazatlan ; one specimen off Spondylus, on tablet 2533 ;
700. VlTRINELLA TENUISCULPTA, n. Sp.
V. t. planata, diaphana, tenuissima; anf. iii. et dimidio, quorum
iii. nucleosi; striis elevatis, spiralibus y quorum una magna,
quasi carina prope suturam sculpta ; peripheria haud angu-
lata ; basi bis angulata, interdum rugis radiantibus distantibus
ornata; umbilico satis magno, carinato ; apertura undata,sub-
The sculpture is not uniform over the last whorl. The principal
diagnostic features are the biangulated base, the infrasutural keel,
and the rounded periphery,
Long. -016, long. spir. 0, lat. '023 - 03 ; div. 180.
Hab. Mazatlan; one specimen off Spondylus, on tablet 2534 1
OF MOLLT7SK3 FROM MAZATLAN, 372
701. ? VITRINELLA, sp. ind.
Tablet 2535 contains fragment, '085 across, of what wa* pro-
bably a gigantic species of this genus or of Cyclotrema, strong^
492, DlALA PATJPERCULA, C. B. Ad.
= Cingula paupercula, C. B.Ad. Pan. Shells, no. : diapxos*
= 10dostomia mamillata, Maz. Cat. no. 492 : diagnosi aucta.
D. t. nitida, solida ; vert. nucL anfr. iv., lirulis spiralibus ei
radiantibus tenuiter decussato ; t. adulta decollata, vestice
mamillato ; anfr. norm, iv.; peritremate continue ; basi obtuse
angulata, lacuna umbilicaii a labio separata formata.
Long. -085, long, spirse -055, lat. '05 ; div. 34.
The fortunate discovery of a perfect young specimen and some
adult shells in the shell-washings of Professor Adams's collection
enables us to explain the anomalies described in the Mazatlan Cata-
logue, where the solitary dead shell was referred, with doubt, to
Odostomia, in consequence of its truncated apex. It was not pos-
sible to recognize in it Professor Adams's " Cingula" since that was
described as having the apex " subacute," and the angular base ant 1
continuous peritreme were not mentioned. The nuclear whorls are
sculptured as in Alaba supralirata ; but the vertex, instead of being
persistent as in that genus, appears to be always decollated in the
adult. The shell has the peculiar glossy texture of Diala.
702. MANGELIA SULCATA, n. sp.
M. t. subturrita, albida, apice obtuso ; anfr. vii., tumidioribus 9
liris vii., obtusis> rectis, vix angulatis ; sulcis spiralibis creber-
rimis, circa basim continuis ; labrol . . . \_fracto].
Long -2, long. sp. -12, lat. '07 ; div. 35.
Hab. Mazatlan ; one specimen off Spondylus, on tablet 2538 j
703. ? TORINIA, sp. in.
Tablet 2539 contains a small shell, '035 across, consisting of 3|
smooth, flattened, sinistral whorls ; with a distinct suture, but not
umbilicated. In a larger specimen (unfortunately lost), under the
microscope this sinistral vertex appeared turned completely upside
down, with more than half a whorl of an orbicular shell, vhite.
sculptured like Vitrinella, with a very strong peripherical keel, and
other smaller keels, decussated by radiating rugae. This mode oi
growth is exactly as in the young Torinia ; but the adult must have
been very distinct from any known species, and perhaps did not
belong to any described genus.
550. MUCRONALIA INVOLTJTA, n. Sp.
M. t. parva, tenui, albida, irregular?, marginibus spirts valdt
KKCurvatis; vert ice dediv"' ; anf. norm. vi. +. . . . satis excur*
273 DR. P. P. CARPENTER ON NEW SPECIES
vatis, suturis valde impressis ; basi prolong at a > obtusu ; aper*
tura ovali, postice angusta ; labro acuto ; tabio tenuissimo,
Long. -105, long, spir '068, lat. '033 ; div. 20.
=Leiostraca Irecta, Maz. Cat. in loco : non C. B. Ad.
551. LEIOSTRACA PRODUCTA, n. sp.
L. t. parva, albida, subfusiformi, marginibus spirts rectis; vert ire
acutiore, recto; anfr. norm, ix., planatis, suturis vix conx/ri-
cuis ; periphena satis rotundata ; basi rapide anyustata, postea
producta; apertura subrhomboiJea, axi antice acuta, anyulata;
labro acuto ; labio tenui.
Long -123, long, spir '08, lat -046; div. 23.
= Leiostraca 1 solitaria, Maz Cat., in loco: non C. B. Ad.
This species is easily recognized by its very peculiar sharply-
pointed beak ; in shape like a young Kostellaria, without the canal.
652. ANACHIS TVENIATA, Phil.
Columbella taniata, Phil, in Zeit j. MnL 1846, no. 26 (non Ad.
& Rve. in Voy Samarang).
Anachis Gaskoini, Cpr. in Maz. Cat p. 510. no. 652.
Variat lineis spiralibus fuscis viii., quarum iii. in spira mon*
strantur ; maculis alternatis inter secundam et tertiam sitis.
Variat quoque maculis evanesceniibus.
Hab. Callao (teste Gaakoin) ; Mazatlan (E. B. Philippi, Reigen);
Cape St. Lucas (Xantus)
It appears that Mr. Gaskoin was not acquainted with Phi-
lippi's species, which had not then reached the Cumingian Collec-
tion ; as he pronounced M. Reigen's specimen to be new, and sug-
gested the specific name in the Mazatlan Catalogue. It would have
avoided a double synonymy, could the name tceniata have been re-
tamed for the Samarang shell, and Mr. Gaskom's for this. The
Cape St. Lucas shells vary as above inlicated.
650. ?ANACHIS SERRATA, Cpr.
Maz. Cat. no. 650, p. 509. Perfect specimens of this singular
species having been found at Cape St. Lucas by Mr. Xantus, the
diagnosis may be thus completed :
Epidermide fimbnata, lirulas spirales eleganter decussante ; labri
denticulis variantibus, interdum subobsoletis.
Long. -28. long, spir 15. lat -13; div. 40.
With the sculpture and general aspect of a small Cantharus, it has
the mouth of an Anachis. The opercuJum, and therefore the generic
relations, are not yet known*.
* The following additions and corrections may bo useful to the students of
the British Museum Catalogue :
Species 181 Area multicostafa further differs from A.grandis in the epi-
dermis being soft and very finely hairy.
OF MOLLUSKS FROM MAZATLAN. 27^
223. The length should be 1-1.
319. For " labio nullo " read " tenuissimo "
330 The nuclear shell has two whorls, AmpuIZarm-sh&ped..
. 367. Add to diagnosis, " operculo concavo, linea elevata suturam definiente"
368. Add to diagnosis, "operculo vix concavo, suturis minus definitis"
373. Add to diagnosis, " operculo concavo, sut.uris distinctis, peripherian
versus linea elevata instructis." The species was found living among the smal
376. Add to diagnosis, " operculo concavo, suturis wx defimtis" Living
501 Instead of the specimen from which the description in the text wa
written, tablet 1966 contains a much tiner shell, since found, which allows of th
following additions to the diagnosis : " vert nucl. parvo, satis extante, deck
viter sito ; anfr. norm, v ; interstitiis carinarum transversim rugulosis ; labr
toMiore. Long. 087, long, spir 057, lat. -038."
510. A very beautiful shell, found in the refuse of Professor Adams's Panam
collection, is probably of this species, though the sutural cancellations are close
It has one more whorl vertex Chemmtzoid, of three Helicoid whorls, scarcel,
projecting ; apex hidden
650. From perfect Cape St. Lucas specimens, add the following to diagnosis
" epidermide fimbriata, lirulas spzrales eleganter decussante."
Page 312. Add to the diagnoses of opercula of Vermetidce:
" (h.) Operculum corneum, intus convexum, nitidum, umbone magno extantt
aztus concavum, paucisptrale, lamina extante suturas definiente. Diam. -045.
Tablet 2537 contains the only specimen found, resembling Siphonium, froc