brief diagnosis. The name should therefore be dropped. The shell, pi. 19,
fig. 15 (not 16)=Chione simillima, Sby., no. 39 ; a good Lower Californian
species. It seems that the error was not in numbering of the figures, as
Mr. Nuttall supposed, but in Conrad's identification of Broderip's species].
40.Chione excavata [is closely related to Ch. sucdncta; the unique type, however,
in Brit. Mus. displays 'characteristic differences of sculpture. It is singu-
larly like the W. Indian Ch. cancellata, and may prove exotic].
^l.Cypricardia Oalifornica [C. Gumiaca, Lam.,= (7. Duperryi, Desh. Almost
certainly from the Sandwich Is.J.
45, 456. Cardium Californianum \_=C. Nuttallii, var. The species is named " C,
corbis, Mart.," by Desh. MS. in Mus. Brit, and CumingJ.
46. Cardium quadragenarium [= C. luteolabrum, Gld.].
51. v. antea, no. 32.
56. Modiola recta. [Described from very young specimens. The broad form is
9. Mytilus bifurcatus. [The type is lost ; the figure and description would suit
many species. It is allocated, in Mus. Cum., to the Californian Sepiifer }
but by Pease to a Sandwich Island MytHus.~\
CO. [None of Conrad's species of Isogncmon have been confirmed as from Califor-
nia. They are known to inhabit the Pacific Islands.]
626. [Mr. Nuttall also brought an oyster, which he named in MS. O. latecaudata,
= O. lurida, var. ; and Hinnites giganteus, Gray, = -f. Poulsoni, Conr.]
64. [Dr. Gould states that H. NicUinin,na, Lea,=-ff. Calif or niensis, Pfr v Chemn.,
Rve. ; but that H. Californiensi^ 7 Lea, is distinct.]
69. Helix Townsendiana [=ZT. (eruginosa, Gld. MS.].
74. Chiton Nuttattii [is an Ischnochiton].
75. Chiton acutus [is an aberrant form of Mopalia. " Chiton consimilis," Nutt. MS.
in Brit. Mus., appears to be Mopalia Hindsii, var. " Chiton Calif ornicus "
Nutt. MS., = " Acanthopleura" scabra, Rve.].
77. Patella mamillata, Nutt. [(non Esch.) is now assigned in Mus. Cuming to
Acmcea scabra, Nutt., var. limatula~].
83. Fissurella ornata, Nutt. [=-F- volcano, Rve.].
84. Glyphis densiclathrata, Rve. [V. anted,, p. 522. The shell has been lost.]
86. H. Calif orniensisj Swains, [(not Californiana } V&l., = mfescens*), is an extreme
var. of If. Cracherodii. The series in the Smithsonian Mus. have 5, 6, 7,
8, and 9 holes ; as soon as it has 10 and 11, it passes into Calif orniensis,
which was figured in 1821 with 9 holes. When these are numerous, they
are generally small in proportion].
91. Calliostoma doliarium \_=C. canaliculatum, Mart. This and C. annulatum }
Mart,, are quite distinct from C.Jilosum, which= C. costatum, Mart.].
92. Omphalms ater [is the S. American species. The common Californian shell is]
04. O. marginatm, Nutt. MS. [=funebralis, A. Ad.].
976. The collection contains one specimen of Crepidtda dorsata.
103. [Is a Serpidorbis, without operc., teste Cooper.]
106. Litorina tenebrata [should be patula, Gld. (non Jeffr.). Nuttall's MS. name
was published by Phil, in 1845].
107. Natica ?maroccana, var. Calif ornica. [The varietal name must be dropped.
The shell certainly came from the Sandwich Islands.]
f 108. [The shell is Vitularia salebrosa, jun., and not] Ranella triquetra.
109. Mitra maura [Swain?., teste Rve. (?ubi)=Jif. orientalis, Gray, =M. " Chi-
110. Olivella glandinaria, Nutt. [=O. biplicata, Sby.].
112, 113. Purpura aperta and P. harpa [are certainly from the Sandwich Islands],
114. Purpura emarginata [was described by Desh. from an immature specimen in
which a half-formed knob caused an il emargination." The adult is one
very extreme form; P. ostrina, Gld., is another ; P. fuscata, Fbs., is a third.
The normal condition is P. lapillus, Cooper (non Linn.),=Sfm'co/, Val.
Mr. Nuttall's collection also contains] P. crispata, var.
116. Monoceros brevidens [is an accidentally short-toothed form of M. lapilloides\
118. Cerostoma Nuttallii [with C.foliatum and C. monoceros, Sby., belongs
528 REPORT 1863.
The specimens numbered 2, 5, 8, 9, 19, 21, 28-31, 36, 44, 46, 49, 50, 52-54, 50,
59, 64-67, 70-72, 76, 84, 86-88, 98, 101, 103, 104, and 109 do not appear in the
Brit. Mus. Nuttallian collection.
41. Voy. Venus. Eev. Zool. and Guer. Mag.
Area trapezia \_ A. tuberculosd].
Saxicava legmnen [ = /;// oladis ; Pfrom hole of Lithojjhagus}.
Pctricola arcuata [=the normal state of P. carditoides, Conr.j.
Petricola cylindracea [=a short form of the same sp. ; developing ridges of growth,
like Tapes ruderata, Desh.].
Venerupis gigantea [ = Saxidomus squalidus, Desh.].
Cyrrricardia Duperreyi [=C. Guinaiaca, Lam., = (7. Calif ornica, Conr. A Sandwich
Island species, fwice quoted, but not confirmed, from Cal.].
Cardium Laperoussii [is an Aphrodite, like Groenlandicum, but more transverse, and
with lateral teeth less developed. This very rare and probably boreal shell has
just been identified from Adm. SirE. Belcher's coll.].
Cardium Calif orniense, Desh. [is not C. California-Hum ( = Nuttallii), Conr. ; but=C.
pseudofossite, Rve., 1844. The name of Desh. is unfortunate, as his shell is the
Kamtschatkan form with strong ribs. The Californian form is smaller, with
fainter ribs,= Cl blandum, Gld.].
Purpura Freydnetii [is figured from a very extreme form of the Japanese specieJ.
P. ostrina passes into similar varieties].
Velutina MuUeri [probably = V. leevigata, which reaches Vancouver].
Lucina cristata \=Tellidora lunulata, Holmes; described from the Pleistocene of S.
Carolina, and lately dredged alive by Dr. Stimpsou ; not T. Burneti].
The following may be added to Deshayes' list :
PL 81. Tellina ligamentina, Desh., 1843. Hob. ? [ = Macoma secta, Conr.]
Tellina Japonica, Desh., in Mus. Cum. [also appears to be M. secta, jun.].
In Yalenciennes' plates to the Voy. Ven. have been recognized the follow-
ing "West Coast species and synonyms, in addition to those quoted in Hep.
3 2. Trochus diadematus, Val. [resembles Pomaulax undosus, jun., but the sur-
face is faintly wrinkled all over ; umbilical region not chiseled ; and
operc. not ridged. It is probably intended for Pachypajna gibberosum~\.
4 1. Trochus rubiginosus, Val. [probably = T. annulatm, Mart.].
2. Trochus pelluddus, Val. [resembles T.lima, Panama].
6 3. Buctinum Preiostii, Val. [probably Pisaniapagodus~\.
8 1. Purpura bufonides, Val. [appears one of the many vars. of P. biscrialis].
9 1. Purpura rupestris, Val. [probably = Monoceros lugubre, jun.].
10 1. Murex acicidiger, Val. [is represented with labral tooth and closed canal ;
but resembles C.festivus, Hds.].
3. Murex tortuus (Brod.), Val. [resembles Ph. princeps, with a very poo/
operc., badly drawn].
16 1. Venus Thouarsii, Val. [? = multicostata, Sby. ; figured with very broad,
smooth, close ribs, scarcely indented, except in the middle].
3. Venus pectunculoides, Val. [is probably T. grata, not histrionica~\.
17 2. Cardium subelongatum (Rve.), Val. [appea'rs= C. procerum, jun.].
18 2. Pecten comatus, Val. (may be=hastatus, jun. ; but, although figured with
out the red spot, it most resembles Hin. giganteus, jun.].
19 1. Pecten cxcavatus, Val. [=7amr dentata, Sby.].
3. ponwtia, Val. [may be = P. ventricostts, jun.].
4. rastellinum, Val. [ = P. ha^tatus, jun.].
21 Ostrea gallus, Val. [" Acapulco," with large plates, = O. mcycdon, Hani.].
22 1. Cardita arcetta, Val. [?= Ven. radiata, Sby.].
2. modulosa (Lam.), Val. [ = Lazaria qffinis~\.
3. turgida (Lam.), Val. [= Ven. laticostata].
5. Mchelini, Val. [= V. Cuvieri].
3 2. Nvcula divaricata, Val. [probably = N. castrensis].
24 1. Penitella Conradi, Val. [may be = Pholadidea ovoidca].
ON MOLLUSCA OF THE WEST COAST OP NORTH AMERICA. 529
2. Penitella xilopliaga, Val. [may be the adult of fig. 4],
3. Penitel a tubigera, Val. [may possibly be intended for Ph. penita],
4. Pholas rostrata, Val. [is probably Netastoma Danvinii, Sby. jun.l.
5. Ungulina htticola,V&\. [may be an extremely bad Petricola robusta],
'6. Corbula luticola, Val. [is probably S2)h(Bnia fragilis].
7. Bornia luticola, Val. \KeUia Laperoussii].
8. Saxicava clava, Val. [=& legumen, Desh., = S,pholadis, var.].
The identification of these species is attended with great uncertainty, as
the types have not been seen, and the artist appears to have studied effect
rather than accuracy.
42. Voyage of Sulphur. The types of these species appear to have been
scattered. Only a part are now to be found in the very valuable collection
of Admiral Sir E. Belcher, in which most of the shells are, unfortunately,
destitute both of names and of locality-marks.
Murex Belcheri [belongs to Purpuridse, and may be considered the type of
the genus Chorus].
Ranella California. [After comparing a series with the Cumingian speci-
mens of R. ventricosa, it appears that the diagnostic characters are not con-
Marginella sapotilla. [The type in Mus. Cuming is much smaller than
the ordinary condition of M. prunum=ccerulescens, Lam., to which species
the common Panama shells were referred by Mr. Cuming. In his collection,
however, they stand thus : Ordinary Panamic type " sapotilla, Hds. : 5-13
fms., sandy mud, Panama, H.C" Another tablet of the true Panama shells
" Marginella, n. sp., Panama," " San Domingo" having been crossed ouf.
The small West Indian form, analogous to the typical sapotilla, is given as
" glans, Mke." The large West Indian shells, with violet tinge behind the
labrum, are " ccerulescens, Lam., Panama," without authority. Another series
of the W. Indian type is given as " ccerulescens, var., Lam., 10 fms., sandy
mud, Panama," without authority. Either habitat- errors have crept into the
Cumingian labels, or else Mr. Redpath's observation will not hold, viz. that
the Atlantic shells have a posteri< r pinch on the labrum, which is not seen
in the Pacific. All the authentic series examined irom the two coasts bear
out his view. There will be two opinions as to whether this be more than
a mere local distinction.]
Solarium quadriceps. [On comparing suites of S. granulosum from the
Texan coast with series from the Gulf of California, it appeared that on each
side of the Peninsula the shells went through similar changes in strength of
sculpture, size of umbilicus, number of spiral granules, &e. ; nor could any
clue be obtained by which the coasts could be separated in a mixed collection.
Hinds's shell stands at the furthest extreme of -removal from S. granulatum.~\
43. U. S. Exploring Expedition. The shells of this collection were depo-
fiited in the Patent Office in Washington, D.C., where, notwithstanding the
great care of Mr. Varden, the curator, they were not a little tampered- with.
Dr. Gould laboured under great difficulties in his work of description ; he
had access only to that part of the collection which happened to be unpacked
and exposed to view during the brief period that his professional engagements
allowed of his visiting the capital ; and his request to be allowed to take
doubtful shells to Europe for identification was refused. The materials also
were of an unsatisfactory kind, a large proportion of the specimens being
much weathered, and many of the locality-marks being manifestly erroneous.
,lf occasional errors have been detected in his great work, they may fairly be
let down to causes over which the author had no control. Many of these
530 -REPORT 1863.
have been corrected by Dr. Gould himself, in his ' Otia Conch ologica/
Boston, 1862, which contains the various papers in the 'Proceedings of the
Boston Soc. of Nat. Hist.,' with an appendix. After the organization of the
Smithsonian Institution, all the natural-history collections belonging to the
Federal Government were transferred to its keeping, with liberty to exchange
duplicates. The shells remained unopened, and the types not accessible, till,
at the request of Professor Henry, I undertook the arrangement of the col-
lections. Fortunately, a considerable part of the shells professing to be
the figured types of the new species were found together, with the artist's
marks corresponding with the plates and figures. The result of the exami-
nation, so far as the general collection is concerned, will shortly be prepared
for the press ; it is sufficient here to tabulate the observations on the N.W.
American species, which were, as it happened, the most satisfactorily pre-
served in the whole series. The following additional particulars include the
" Rectifications " in the ' Otia,' the paging of which is continued from the
" Expedition Shells " quoted in Rep. p. 209. The quarto volume quoted in
p. 210 is distinguished as " E. E. Mollusca." The folio atlas of plates bears
date on title 1856, but was not published till 1861, teste Binn. Bibl. vol. i.
p. 504. The comparisons of types were made in 1860, from a proof copy.
3. Chiton li<jnosus=.[Mopalia~] Merckii, Midd., test. Gld. E. E. Moll, [from
worn specimens := Ch. Monterey ends, Cpr., from perfect shells.]
230. Chiton (Chatopleura) vespertinus. Perhaps =C7z. lic/nosus, var. [A Mo-
palia, differing slightly in the amount of posterior wave. The fig. in
E. E. Moll, is made-up from broken specimens.]
6, 242. Chiton (Onithochiton) dentiens. [The shell sent as type of this species,
and all the others seen from the coast, agree in belonging to Ischnochiton,
and are not dentate, as would be presumed from the figures and diag-
nosis. As Dr. Gould's toothed Onithochiton may hereafter be found, the
Smithsonian shells have been named Isch. pseudodentiens.~]
6, 242. Chiton (Clieetopleura) muscosus. \=. Acantliopleura rmiscosa, H. & A. Ad.
Gen.,= C%. ornatits, Nutt. P. Z. S. 1855, p. 232,+Mopalia consimilis,
Nutt. MS. in B. M. This beautiful species is a true MopaliaJ]
230. Chiton (Leptochitoti) tnterstinctus. Resembles C. Sitchensis, Midd. [ = Cal-
locliiton i,, H. & A. Ad., Gen. It is a true Ischnochiton. The genera of
Chitonidee cannot always be ascertained by external characters alone, as
indicated in Messrs. Adams's genera. All the species in the Smithsonian
Museum have been dissected/]
7, 242. Patella (Tectura) f,mbriata=. P. cinis, Rve. [= Acmaa pelta, Esch.].
9, 242. Patella (Nacella} instabilis. [Varies greatly in proportions.]
9, 242. Lottia (Tectura) pintadina. [The types represent the normal condition of
Acmesa patina. One variety is A. cribraria, Gld. MS. The speci-
mens of A. mesoleuca intermixed by Dr. G. in the Mexican War collec-
tions were, no doubt, affiliated by an oversight]
10, 243. Patella (Tecfura) textilis is a var. of T. persona, Esch. [A well-marked
form of delicate growth, passing from A. persona into A. pelta, var. ;
from the young of which some specimens can hardly be distinguished,
except by the fretted pattern.]
10, 243. Patella ( Tecturd) scab r a =. spectrum (Nutt.), Rve., not scabra (Nutt.), Rve.
[The tvpe-specimens belong to two species, f. 456, 456, being A. spec-
trum, Nutt, while 4566 represents the flattened variety of A. persona,
Esch. (approaching the form digitalis, Esch.). As the diagnosis best
accords with the latter shell, P. scabra, Gld., may stand as a synonym of
persona, var. ; the intermixed specimen, accidentally figured as belonging
to the species, being removed to spectrum, Nutt. Thus the name scabra,
not being needed as first described, will remain for Nuttall's species,
described by Rve., but first named in print by Jay.]
ON 3IOLLUSCA OF THE WEST COAST OP NOllTH AMERICA. 531
15. ' Crepidida lingulata. [Described from a worn specimen. Perfect shells
cannot be separated from C. bifabata, Rve.,= C. ? dorsata, var. bilobata,
Maz. Cat., nor from the supposed C. dorsata in Mus, Cum.]
15. . Crepidula nummaria. [Described from an aberrant, worn, and rounded
specimen. The normal state is C. navicelloides, Nutt. "When grown
in hollow bivalves, it becomes nummaria : the contrary extreme, grown
in. crypts of borers, with another shell or crab over it, is explanata,
Old., = exuviafa, Nutt.,=/er/<wa*, Val. The Lessonoid form is C.
fimbriata, Rve. The young 'appears to be C. minuta, Midd. But the
"C. nummaria, Old.," of Mus. Cum., is quite a distinct species, not known
from the American coast.]
' oft ?*** Q umt ^ ca ?' l ' >ia + \ [=. pattida, Br. & Sby.].
50, 244. Natica (Lunaha) soluta ( L J J
30, 244. Natica (Lunatia) algida ; " R. Negro," E. E. Shells ; " Oregon," E, E. Moll.
[vere: = young of L. Lewisii, Old., July 1847, =L. Aem/fea,Midd., 1849],
f>2. Lacuna carinata, Old., Nov. 1848 [L. soKdula, Lov., 1846. Finmark].
62,245, Litorina patttla, Gld. [non Jefir,], Mar. 1849,= L. planaxis [Nutt], Phil.,
52, 63. Litorina kpida, scutulata, et plena, [are shown by large series to be varieties
of one species].
99. Litorma cincta, Gld., Aug. 1847, Puget Sd. [=. Sitchana, Phil., 1845.
This species appears to have been overlooked in the E. E, Moll.]
61. Cerithitim irroratum, Gld. [= C. obesuni, Sby. sen., teste H. Cuming. Tho
type proves this to be an E. I. species, and not the Pauamic C. stercus-
muscarum, VaL, as supposed by Dr. Gld. : v. C. B. Ad. in loco].
C2. Oerithium filosum, Gld., May 1849 [=*Turritella Eschrichtii, Midd., 1849,
(Bittium). Comp. C.Jilosum, Phil., Z. f. M. 1848, p. 84. California],
04, 245. Fusus (Eela) fidicida.
(54, 245. Fusus (Tropfion) Orpheus [(non Baird.)= T. Fabricii, Moll., in Br. Mus.]
07, 245. JSuccinum (Nassa, s. g. Tritia) fossatum. Casia in Ind. p. 253. [= JV1
eleffans, Rve., 1842, non Dujardin : Zaphon e., Add.].
70,245. Nassa (Tritia) mendica^N. Woodwardi, Fbs., 1850 [from types :+N.
71, 245. Columbella (Alia) gausapata. [Belongs to the Nassoid group, Amycla.~\
75, My a prwcisa \_ = M. truncata. Scarcely even a variety j but approaches
the form AldrovandiJ]
76, 245. Lutraria (Tresus) capax. [Dr. G. revives his excellent name ; L. maxima,
Jonas, 1844, being anterior to Midd. Conrad's name, Schizothcerus
Niittallii, is, however, very much earlier.]
77, 246. Ostcodesma (Lyonsia) bracteatum [+O. nttiaum, Gld., in different states
of preservation, =L. Catifornica, Conr. The " golden nacre " of O. brac-
teatum is due to incipient decay, r,s generally happens in Anomiads].
83, 246. Cardita (Actinobolus) ventricosa. [Appears to be a local variety of the
ancient Miocene species, Venericardiaborcalis^-^-C. occidentalis, Conr.,
+ C. suUenta, Conr. (fossil) probably.]
83. Cardium blandum, 1850. [A finely grown ?var. of C. Californiensc, Desh.,
1839, Midd. (non C. Californianum, Conr., 1837, corbis, var.) = C.pseudo-
fossile, Rve., 1844. The name is so like the preoccupied Californianum
that it may advantageously be dropped.]
85. Venus rigida, 1850 [non Dillw. 1817. It is fortunate that the name is
not needed, as the author has joined two very different species, both
of which have other names. The original Latin diagnosis applies- to the-
rough northern form of Tapes staminea, Conr., which is the Saxidomus
Petitii of Desh., and includes V. ruderata, Desh. But the "specimen,
3f in. long," which modified the description in the E. E. Moll., and is-
figured at f. 538, proves to be the adult form of Tapes tenerrima, Cpr.,
P. Z. S. July 1856, which is a Californian and not a Panamic species,
as had been supposed from Col. Jewett's label].
87, 246. Anodonta corjnata A. Oregonensis, Lea (probably).
87. Anodonta feminalis \_A. an^ulata, var., teste Lea]*
S32 REPORT 1863.
93. Mi/filus (Modiola) Jt-abeUatus. [The northern form of Modiola recta, Com.
The " specimens from lh3 Gulf of California " must have been M. lira-
zilicnsis, intermixed by accident.]
94. Mytilus trossuhts [is scarcely a variety of M. edulis, which is very abundant
along the coast, under its usual modifications of form and colour: but
generally of small size].
95. Pcctcn hericeus, Gld. [ = P. hastatus, Sby. sen.].
97, 246. Terebratitla ( Waldheimici) pidvinata.
97, 246. Terebratula (Terebratvlla) caurina.
E. E. Moll.
113. Planorbis corpulentus is of Say.
143. Melania plicffera is of Lea.
436. Anodonta angulata is of Lea.
206. Scalaria ?australis [is abundantly confirmed from the Vancouver district.
It should be called Opulia borealis, Gld.].
244. Purpura ostrina, Gld., 'Otia,' p. 225 [is an aberrant smooth var. of P.
lapillus, Coop., non Ln. ; the normal state being P. saxicola, Val.].
The following species, described in the * Otia ' and ' E. E. Moll.' as from * N.
Zealand ' and an unknown locality, are really from Puget Sound.
66, 245. Trochus pupillus, Gld., March 1849: N. Zealand (Ziziphinus in Index) : =
Margarita calostoma, A. Ad., 1851. Comp. T. modesius, Midd. [which
is, however, =ligatus, Gld., = costatits, Mart. This species is named in
the B. M. Col. " M. costellata, Sby.," but is distinct, teste A. Ad. &
64,245. Fusus (Neptunad) incisus, Gld., May 1849. Hab. ? [=Tritonium
(Fusus) Sitchense, Midd., 184Q,=uccinum dirum, Rve., 1846.]
B. A. Eep.
210. Venus calcarea [is correctly described by Dr. G. as from N. Zealand;
although quoted by him as the Oregon analogue of V. mercenaria],
211. Tellina Callfornica, Conr. [ = J/cowa inconspicua].
211. Triton fiyrinum [is from Central America, not] Puget Sd.
211. Pectcn Fabricii, Phil, [is the young of Islundicm : Dr. G.'s shells are the
young of P. ("ruJridus, ?var.") Hindsii].
211. Fusus cancellinus. [Dr. G.'s shells are Ocinebra, var. asperaJ]
212. Purpura lagena, Gld. [MS., is probably saxicola, var.].
213. Pecten Townsendi [has not been identified],
213. Venus ampliata [is believed by Dr. G. to have been first designated by him
as a species, afterwards proved = riyida (Petitii), var.].
44. Middendorff. The synonymy given in Hep. pp. 214-222 is that of
the author, not of the writer of the Report, who is by no means prepared to
accept the learned doctor's identification of species. The three Chitons quoted
with doubt from Tilesius have not been confirmed, as from Kamtschatka, by
any other writer. The Ch. giganteus has the aspect of the large Ischnoclriton
Magdalensis ; the Oh. muricatus belongs to the LopTiyrus group, which is not
known so far north ; and the Ch. setosus has also a S. American aspect. The
treatise " De Chitone Giganteo Camtschatico additamentum ad Zoographium
llosso-Asiaticum, auctore Tilesio," was read March 19, 1823, and publi.-Ouvl
in 1824. It contains a very valuable and (for that period) remarkable account
of the anatomy of Chitons, but it does not profess to name and describe species
in the modern sense. The names, therefore, had better be dropped. Midden-
dorfFs new species were first described in the ' Bulletin de la Classe Physico-
3Iathematique de 1'Acade'mie Imperiale des Sciences de St. Petersbonrg,' a
work of which few complete copies are known in England, under the follow-
April -20,, 1847: roL vi. No. 8 (total number 128).
ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 533
116. Chiton Stelleri, n. s.,= C. amiculatus, Sby v Rve., non Pallas.
117. Chiton Pallasii, n. s.
117. Chiton Brandtii, u. s.
118. Chiton Mertcnsii, n. s.
118. Cliiton Eschscholtzii, n. s.
1 19. Chiton Wosnessenskii, n. s. [A typical Mopalia : mantle indented behind.]
120. Chiton Merckii, n. s. [=C7t. ligtwsus, Gld., July 1846:= Mopalia Monterey en-
120. Chiton limdus, n. s.
121. Chiton scrobiculatus, n. s., California.
121. Chiton Sitchensis, n. s.
Nov. 1847 (read April 28) : vol. vi. No. 20 (total number 140).
317. Patella (?Acma>a) ancyloides, n. s. [Probably a delicately grown young patina :
the diagnosis, however, suits textilis. Name afterwards altered to per-
sonoides, to distinguish from Propilidium ancyloide, Fbs.]
318. Patella (?Acmcea) ceruginosa, n. s. [Probably =textilis, Gld., 1846; but the
figure is more like scabra, Nutt.]
318. Patella (? AcmeeaJpHeolus, n. s. [Probably the young of A. pelta ; but assigned
in Mus. Cum. to a very different shell, =A. rosacea, Cpr.]
318. Patella (?Acmeea) Asmi, n. s. [A specimen of A. pelta, in Dr. Cooper's col-
lection, began life as A. Asmi.]
319. Patella (?Acm(ca) cceca; genuina, vertice erecto, Atlantic.
319. Patella (?Acnuea) cceca, var. concentrica j vertice subinflexo ; with crowded
lamellae of growth.
1849 ; read Oct. 6, 1848 : vol. vii. No. 160. " Vorlaufige Anzeige einiger neuer
Konchylien aus den Geschlechtern : Litorina, &c. ; von Dr. A. Th. v. Middendorff."
241 no. 1. Litorina yrandis. [The specimens in B. M. and Mus. Cum. appear to
represent a large var. of L. litorea.~\
242 2. Litorina Kurila (like tenebrosa).