parison with shells from the Pacific Islands (teste Pease's specimens) proves
them to be completely identical. The *' specific " names of Chemn., when
simply the second word of the diagnosis, can hardly claim precedence.
486. The genera in this family have lately been revised by Mr. A. Adams. A
large number of his Japanese groups are here represented. This species
* The generic names here given were assigned by Mr. A. Adams, who kindly examined
the figures of the minute Mazallan shells, all of which have been drawn under the micro-
i OX MOLLUSCA OF THE WEST COAST OF NORTH AMERICA, 5 i7
ngrees with Pi/rami'della, sp. ind., C. B. Ad., no. 293 (not 294), and may b*
quoted as Obeliscus AdamsiL
487, 488. Belong- to Evalea, A. Ad.
489. Is a Syrnola, A. Ad.
492. The peculiar appearance of the a.pex is due to decollation, as proved by the
discovery of an adolescent and several adult specimens. It -probably belongs
to Dinla, A. Ad., and= Cingula paupercula, C. B. Ad., no. 253.
498-500. Belong to Miralda, A. Ad. Parthenia quinquecinda = ? Cingula turrit n f
C. B. Ad.,4.jR&sa0 notabilis, C. B. Ad.
501, 502. Belong to Oscilla, A. Ad. Parthenia exarata^? Cingula terebeUum,C.ft.A<l.
503-506. The " Odostomoid C/irysallidee " probably rank best with Mumiola, A. Ad.
512. GhrysaMida ovulum=? Cingula inconspicua, C. B. Ad. ; non ?Rissoa inconspicua,
C. B. Ad. nee Alder.
513-515. Are Pyrgulina, teste A. Ad. The Japanese species, however, seem more
like Parthenia, no. 497.
517. Is a Stylopti/gma, A. Ad.
520. This is not the Chemnitzia similis of C. B. Ad. j and is probably a variety of
523. = Chemnitzia qffinis, C. B. Ad., pars : pars= Ch. ttndata, no. 53].
535. Is perhaps a Mormula, A. Ad.
645. The various shells grouped under Aclis require revision. Comp. Onoba, A. Ad.,
and Ebala, Gray, which is figured as Aclis in Add. Gen.
549. Ranks best with Eulimella.
550. This is not Leiostraca recta, C. B. Ad., and may be called Mucronalia involute.
551. This is not L. solitaria, C. B. Ad., and may be called L. producta.
552. = Mucronalia solitaria, C. B. Ad.
553. Ranks best with Eulima, teste A. Ad.
555. L.retexa-, distinct from L. iota, C. B. Ad.
556. Should be Eidima, teste A. Ad.
557. Vide note to 393.
563. Belongs to the submenus Seila, A. Ad.
568. Scalaria raricosta is perhaps the young of 8. JElenensis.
569. S. funiculata and 8. diadema, with their congeners, should be removed from
Cirsotrema to Opalia.
670. Dr. Gould dissents from the affiliation of this shell to the West African species
on the ground that "he can separate the African from the Pacific shells as fast
as we can hand them to him." So easily can any ordinary naturalist separate
conspecific British and Mediterranean specimens, or Mazatlan and Panama
specimens. It is not found in the West Temperate fauna ; the " var. Cali-
fornica " being the ordinary type from the Pacific Islands, which is much
more entitled to be regarded as distinct than are the West American forms.
572. Is shown by perfect Cape St. Lucas specimens to belong to a natural group
of species, resembling flattened, perforated Phasianelke, to which the name
Eucosmia may be given.
580. Appears under genus " Lagena, Klein,"* in Mils. Cuming; the Argobuccina
cancellation, Oregonense, &c., having received a new name, Priene, H. & A.Ad,
589. This belongs to Closia, Gray, = Volutella, Swains., non D'Orb.
* The names of Klein in his 'Tentaraen' and * Lucubratiuncula,' 1773, are not entitled
to precedence (according to the Brit. Assoc. rules), because he evidently did not adopt the
Linnean mode of binomial nomenclature. What he calls a " genus " answers more to the
modern idea of chapter or section. By chance, some of his names are allowable ; but, if
used, the genus must be regarded as that of Adams, Gray, Morch, or other writer who
defines it. The following will serve as illustrations of Klein's " genera" " Sol, Luna,
Stella, &c. ; Auris, Anas, Tigris, Pes-anserinus, Tuba-phonurgica, Cochlea-lunar -w,
Cochlea-ccelata, &c. ; jBuccinum-lacerum, Buccinum-murivatum, Thema-musicum, &c. ;
Ostreum-imbricatum, Ostreum-muricatum, &c. ; Musculus-latus, Mwculus-mammarius,
&c. ; Tellina-arcinata, Tellina-virgata, &c.; Concha-long a-Hjoris, Coneha-longa-uniforis;
Concha-rpiXofios ; " and, in p. 167, " Musculus-polylepto-gingtymus" under which re-
markable generic name is given as the first species " Arca-Noce." According to the now
fashionable transformation of malar-ological nomenclature into a branch of archaeological
research, under pretence of justice to ancient writers, the hithevto unirersully understood
548 REPORT 1863.
692. Oh'va intertincta is very close to the young of 0. subangulata, but differs in tho
chestnut stain on the columella. I have not been able to compare it with
the young of O. Cumingii.
694. Is an abundant species in the Eastern Islands, occasionally seen in West
595. Belongs to Anazola, Gray. The remaining Mazatlan species of Olivella are
now called Olivina, Gray.
598. Olivella aureocincta=. Oliva pellucida, C. B. Ad., non Eve.
599. Olivella inconapicua, C. B. Ad., is probably the young of the colourless var. of
O. ffracilis, Avhich must be excluded from the synonymy of O. dama, no. GOO.
606. The figure of Purpura biserialis, jun., Brit. Mus. tablet 2232, is stated by Mr.
A. Ad. to represent the genus Simmgera,iyOi;b., = Chelitropis, Fbs. ; just as
Macgillivrayia is the young of Doltum.
611. Rhizocheilusnux+R. distans, Cpr.
612. The young of Vitularia salebrosa is named Fusm fatoeBows, Hds., in Brit. Mus.,
and is also the " Ranella triquetra " of Nuttall's collection.
618. Is probably C. baccata, Gask., in Mus. Cum., though Mr. Gaskoin regarded it
as new. " The var. obsoleta, 6186, is probably C. yalckvias, Rve.
619-622. These shells may perhaps be better studied under Daphnella.
631. Certainly=j\ r . gemmulosa, C. B. Ad.
633. Nassa crebristriata may rank as a var. under proxima, C. B. Ad., which is pro-
bably itself a var. of ver si color.
639. This aberrant group of forms is now transferred to Cantharus inMus.Cuming.
Perhaps they rank better with Siphonalia, A. Ad.
653. Anachis rufoiincta ("new," teste Gaskoin) is probably =(M diminuta, C. B.
Ad., in Mus. Cum., but scarcely agrees with the diagnosis, nor was the ac-
cordance noticed in the Amherst types.
659. =P. elegans, Gray, in Griff. Cuv. pi. 25. f. 2. (1834.)
The following species, since found, must be added to the catalogue of the
Reigen Collection. The specimens are deposited in the British Museum.
The descriptions of nos. 693-695 appear in the appendix to the Brit. Mus.
Cat. ; the remainder are ready for the press.
704. Cellepora areolata, Busk. On Omphalius ligulatus.
705. Menibranipora ?Flemingii, Busk. ,,
707. Dactylina=C. B. Ad., Pan. no. 516. Obtained from M. Heigen, at Mazatlan,
by Major Rich.
693. Lyonsia, sp. ind., 1 sp.
694. ?Motitacuta chalcedonica, 1 sp.
706. VMontacuta obtusa, n. s., 2 sp. Congeneric with 157, 158.
695. Crenella, sp. ind., 1 sp.
696. Pectuncultis, sp. ind., 1 sp.
697. Cylichna Carpenteri, Hani., P. Z. S. 1358, p. 643, 1 sp. ?= C. luticola, jun,
698. Scissurella rimttloidcs, n. s., 1 sp.
699. Vitrinclla ornata, n. s., 1 sp.
700. Vitrinclla tcmtisculpta, n. s., 1 sp.
701. ? VitrineUa, sp. ind., fragment.
702. Mongolia sulcata, n. s., 1 sp.
703. ??Torinia, sp. ind., 2 sp.
'708. Malea ringens. Obtained from M. Reigen, at Mazatlan, by Major Rich.
53. Jaifs Catalogue. Mr. Hanley states that after the return of Prof.
"Nuttall, his duplicates were bought by the elder Sowerby, who sold part to
designations of Lamarck, &c., must give way to such names as the above ; and if some
other * Attempt ' or ' Little Lucubration ' of a year's earlier date should be disinterred
from now-fortunate concealment, the most modern 'Guides' and 'Books of Genera' will have
to be re-written. Klein's idea of Argobuccinum appears to have been that of a " Spotted
\Vhclk," probably Ranella argus. Argoltuccimim, H. and A. Ad., may stand as defined iii
their ' Genera' for the thin ventricose Tritons, 'iliey have, however, divided the species
between I'riene and Lagena.
ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 549
Dr. Jay, and part to Mr. Stainforth. The specimens in Mus. Cum. were re-
ceived from Dr. Jay ; those in Mus. Haiiley from Mr. Stainforth. In the
third edition of Dr. Jay's Catalogue, 1839, appear the following species which
have not been identified, and localities not confirmed.
14. Tellina rosea, Lam. California. [Perhaps Sanguinolaria miniata.~\
33. Pecten tumidus, Brod. Upper California.
87. Chiton incarnatusj Nutt.
Chiton textilis, Conr.
38. Patella plicata, Nutt.
40. Fissurella pica, Nutt.
41. Crepidula squamosa, Brod.
Sulla Californica, Nutt.
68. Natica variolaris. California.
70. Trochus Californicus, Nutt. Upper California.
72. Monodonta fusca, Nutt.
73. Marmorostoma planospira, Nutt.
Litorina iostoma, Nutt.
Litorina maculata, Nutt.
79. Melongena occidentalis, Nutt,
80. Murex sexcostatm, Bru^
86. Monoceros plumbeum, Kien.
87. Buccinum Boysii, Nutt. n ,
54. C. B. Adams. After arranging the duplicate Reigen Collection in the
State Museum at Albany, New York, I proceeded to Amherst, Mass., to
study the type- collection from which Prof. Adams's book was written. The
result is embodied in a " Heview of Prof. C. B. Adams's ' Catalogue of the
Shells of Panama,' from the Type Specimens," written for the Zool. Soe. in
Jan., and published in the Proceedings for July 1863, pp. 339-369. In this
paper the synonymy between the Mazatlan and Panama Catalogues is pointed
out, and the species assigned to the modern genera. The following are the
principal corrections needed in the list, Rep. pp. 267-280. The results in
the succeeding paragraphs, pp. 280, 281, should be altered accordingly.
(M.=Brit. Mus. Maz. Cat.)
3. Ovula neglecta=avena, var.
8. Cyprcea punctulata ; quite distinct from C. arabicula.
11. Cyprcea rubescens, C. B. Ad., = T. sanguinea, dead.
15. Marginella sapotilla, C. B. Ad., is perhaps a large form of sapotilla, Hds. It
is destitute of the sharp posterior laoral angle seen in the West Indian
specimens of ccerulescens.
33. Oliva araneosa, C. B. Ad.,= O. Melchersi, M. 591.
35. Oliva pellucida, C. B. Ad. ; = O. aureocincta, M. 598, dead.
40. Oliva venulata, C. B. Ad., = O. angulata, jun.
43. Nassa canescens=dead sp. of N.pagodus.
50. Nassa pagodus, C. B. K,decussata, Kien. [ ? non. Lam.] = acttfa, M. 625.
51. Nassa Panamensis has the operculum of Phos and Northia, = exilis, Pws.
52. Nassa proximo +5 N. striata, C. B. Ad. [non Mus. Cum. = N.paupera, Gld.],
+N. crebristriata, M. 633, are probably vars. of N. versicolor.
53. Fossa scabriuscula, C. B. Ad., + 56 N. Wilsoni=N. complanata, Pws.
70. Purpura foveolata, probably = worn sp. of Cuma costata, M. 610.
74. Pur pur a osculaw+Rh. Calif ornicus+Rh. distans, are probably vars. of Rhizo-
81. Columbella costellata, C. B. Ad.,=Anachis scalarina, Sby.
98. Columbella parva, C. B. Ad., = dead sp. of Anachis pyc/mcea.
103. Columbella tessellata, C. B. Ad. (non Gask.),=^4. Guatemalensis, Rve.
110. Cassis abbreviata can scarcely be distinguished, in some of its many varieties
from the Texan Bezoardica inflata.
154. Cancellaria affinis scarcely differs from C. urceolata, M. 445.
550 BEPORT 1863.
160. Cancellaria pygmaa= C. goniostoma, jim., no. 157, =M. 446.
164. Pleurctoma aiiior Drillia v. Melchersi, M. 461.
169. Pleurotoma discors, C. B. Ad., is probably a finely developed var. of Z>.
182. Pleurotoma rustica, C. B. Ad., = worn specimens of D. Melchersi, no. 164.
191. Manqelia neglecta, probably M. acuticostata, M. 473.
194, 195, 201 belong to Cerithiopsis.
196. Cerithium famelicum must stand for the "West Coast Uncinoids, M. 383 ; tbo
Cumingian shell, and two out of ten in the type-series, belong to C. me-
diolave, M. 382.
198, 199, 200 are various forms of C. stercus muscarum, Val. ; quite distinct from
C. interruptum, Mke., and C. irroratum, Gld.
203. Does not correspond with the diagnosis, and must stand as Chrysallida pau-
percula, a very distinct species.
208. Is scarcely a variety of Triforis alternatus, no. 207.
209. Both the specimens are dextral,= Cerithiopsis tuberculoides, M. 557.
210. Turritella Banksii, C. B. Ad. (non Rve.} = T. goniostoma, jim., M. 379.
217. A dead, stunted specimen of Ccecum undatum, M. 371.
220. Chemnitzia acuminata is a very broad but typical species ; not Clirysallida.
221. Chemnitzia affinis, Mus. Cum. and M. 523, has sufficient correspondence with
the diagnosis ; but the type= Ch. undata, M. 531.
222. Chemnitzia clathratula. The type-series contains Chrysallida clathratida,
M. 513 and Mus. Cum.,+ CAr. communis + Chr. effusa, M. 510,+ Dunkeria
subanyulata, M. 537.
223. Chemnitzia communis, the type of Chrysallida, M. 507, Cpr. (vix A. Ad.).
The type-series also contains Chr. effusa+Chr. telescopium, M. 508, + jDww-
keria subangulata,-}-?do. var.
225. Chemnitzia major ranks with Dunkeria.
227. Chemnitzia Panamensis contains also Ch. Adamsii, M. 519, -\-Ch. ? gracillima,
228. Chemnitzia similis, like aculeus ; differs from Ch. ?similis, M. 520, which per-
haps = Panamensis, var.
230. Chemnitzia turrita^ZSl, " Rissoa, sp. ind."
231, 235, 237, 238. These species of " ?Litorina " belong to Fossarus.
233. Litorinaatrata-\- (adult) 257, ?Adeorbis abjecta, are the same (variable) species
of Fossarina, A. Ad.
239. Litorina parvida, C. B. Ad. (non Phil.),=Z. Philippii, M. 398.
244. Rissoa Jirmata+()\mJ) 250, R. scaliformis=jRissoina, sp. M. 409.
246. ?Rissoa inconspicua, C. B. Ad. (non Aid.), does not accord with the diagnosis,
but is identical with Akania tumida, M. 414.
249. Rissoa notabilis -\-Cingida ?turrita belongs (with 252 and 254) to another
suborder, =Parthenia quinquecincta, M. 498.
252. VCinffula inconspicua= CJirysallida ovulum, M. 512.
253. Cingula paupercula = ? Odostomia mamillata, M. 492, = Diala.
254. Cingula terebellumParthenia exarata, M. 501.
261. Vitrinella minuta. The original type accords better with Ethalia.
266. Vitrinella regularis is also an Ethalia.
269. Vitrinella valvatoides. Probably an Ethalia.
270, 271. Are apparently vars. of Solarium granulatum.
272. May be distinguished as loyinia rotundata, frtfni its great superficial resem-
blance to Helix rotundata.
275. Trochus Leanus is a pale var. of Calliostoma M'Andreee.
276. Trochus lima can scarcely be distinguished from C. Antonii, Mus. Cum.,
dredged in the Japan seas by Mr. A. Adams.
277. Trochus lividus, C. B. Ad.,=Modulus disculus, M. 403.
280. Trochus re1iculatus= Omphalius viridulus, M. 292.
281 . Turbo Buschii, C. B. Ad., = Uvanilla inermis, M. 287, = T. varicgatus, Gray, MS.
in Brit. Mus. The true U. Bmchii is coloured outside like U. olivacea, but
with a white base like U. inermis. St. Elena, Hds. in Brit. Mus.
282. lurbo phasianetta, C. B. Ad., is probably the perfect form of Phasianclla } ?var.
ON MOLLUSC A OF THE WEST COAST OP XORTH AMERTCA. 551
striulata, M. 2836. Its operculum proves it to be a true Phasianella, and
not Melaraphe phasianella, Phil., of Add. Gen.
283. Turbo rutilus, the worn remains oi what perhaps was once Pomaulax undosus,
brought in ballast from Lower California.
239. Scalaria, sp. c, = Opalia funicuhita, jun., M. 569.
290. Eulima [Leiostraca] iota appears distinct from L. retexta, M. 555.
292. Eulima [^Mucronalia] so itaria= Leiostraca, sp. a, M. 552.
293. Ptframidella, sp.,= 0fe/*Vet Adamsii, M. 486.
296. Natica lurida, C. B. Ad., = pale var. of N. maroccana.
297. Natica otis, C. B. Ad. (non Br. and Sby.), = Polinices " Salangonemis" C. B. Ad.,
299. Natica Souleyetiana, C. B. Ad., closely resembles N. maroccana, with larger
300. Natica virginea, C. B. Ad., + 302, N., sp. ind. b,= Polinices uber, M. 576.
301. Natica) sp. a, = maroccana, var. unifasciata.
318. ?? Tnmcatetta dubiosa is probably a Paludinella.
321. Sulla punctulata-B. Adamsii, M. 224.
322. Sulla, sp. = Tornatina carinata, M. 223.
323. Vermetus ?glomeratus, C. B. Ad.,= V. eburneus, Rve., M. 354.
324. Vermetus Panamensis, C. B. A.d.,=Aletes centiquadrm, M. 352.
325. Stomatella injlata is a Lamellaria.
326. Hipponyx ?subrufa, C. B. Ad.,= ZT. Grayamis, jun., M. 35Q,+?barbatus, jun.
327. Hipponyx ?barbata, C. B. Ad. The type-series contains H. barbatus, M. 349,
+H. Gray anus +Di<cina Cumingii", hi. 14 (valve).
330. Calyptrcea aberrans is a valve of Anomia.
331. Calyptraa aspersa= Galerus conicus, broken, worn, and young; one sp. may be
333. Calyptrcea conica. Most of the specimens are G. mamillaris, = 340, G. reyn-
laris ; but a few may be the true G. conicus, worn, M. 332.
338. Calyptrcea planulata is a young flat C. cepacea.
342. Cahjptrcca ??un(/uis, C. B. Ad.,= Crucibulum spinosum, jun.
343. Crepidula cerithicola= C. onyx, jun., M. 340, -fC. incurva, jun., M. 339.
349. Crepidula squama. Some of the young shells belong to C. onyx ; one perhaps
to C. incurva.
350. Crepidula unguiformis. Some of the specimens belong to this species j others
to C. nivea.
351. Crepidula nivea. The type-specimens are small, poor, and rough, of the var.
striolata, passing into Lessonii. Perhaps, therefore, the first name squama
should be retained for the species (nos. 348, 349, 350, part, and 351), leaving
striolata and Lessonii for the vars.
352. Crepidula osculans belongs to another order, = Scutettina navicelloides, M. 269.
353. Crepidula rostrata, C. B^Ad., Rve.,= C. uncata, Mke., M. 338; and is perhaps
distinct from C. adunca, Sby., = -so^V7, Hds^^rostriformis, Gld.
357. Fissurella microtrema. Dead shells, of which part= V. rugosa, var. M. 273.
358. Fissurella mus. Intermediate between Glyphis incequalis, M. 279, and var.
361. Fissurella mrescens. Intermediate between F. v., M. 271, and F. nigropunctata,
366. Siphonaria ?pica, C. B. Ad. Young dead limpets [?Acmcea~\.
367. Lottia ?patina, C. B. Ad. [non Esch.], may stand, until more specimens have
been collated, as Acmcea (?Jloccata, var.)j^/osa.
368. Lottia, sp. ind. a, may be quoted as Acmcea (?floccata, var.) subrotundata.
369. Lottia, sp. ind. b, may rank, for the present, as Acmcea (?vespertina, var.)
371. ? Patella, sp. ind., resembles P. vulgata, but may be an Acmcea.
372-376. There was no opportunity of dissecting the Amherst Chitons ; but among
the -remaining duplicates of the collection (all of which were obtained and
brought to England) were the following :
373. Chiton diipar, C. B. Ad. (! J non Sby.), including Lcpidoplcurus Adamsii and
var. and L. tcnuisculytus.
552 REPORT 1863.
375. CJiiton pulchellm, along with Ischnochiton Elennms, and ?vor. expressus.
376. Chiton Stokesii. Sent as C. patulus by Mr. Cuming.
377-379. Probably vars. of Anomia tennis (non lampe).
380, 381. Ostrea, sp. ind. a and b, a peculiar corrugated species, which may stand
as O. Panamensis.
382. Ostrea, sp. ind. e, resembles O. rufa, Gld., MS. (not Lam. in Deless.), not
383. Ostrea, sp. ind. c?, more like the Gulf Mex. shells than O. Virginica, M. 212.
384. Ostrea, sp. ind. e, may stand as O. amara. The "small var." is O. concha-
phila, M. 214.
386. Spondylus, s^.jPlicatulapenicittata, M. 210.
393, 394. Perna, sp. a, 6, = 7. Chemnitzianum. The Jamaica conspecific shells are
labelled " bicolor, Ad."
396. Pm>m tuberculosa, C. B. Ad., probably = P. maura, jun.
398. Lithodomus, sp., includes Z. aristatus, M. 176, Z. attenuatus, M. 173, and
Z. ?plumula, jun., M. 175.
399. Modiola semifusca, C. B. Ad.,=7J/. Braziliensis, M. 171. More like the Atlantic
shells than are those from Gulf Cal. A specimen, undoubtedly from N.
Zealand, is pronounced conspecific by Mr. Cuming.
400-404. Modiola, sp. ind., contains M. capax, M. 170, J/ytf. multiformis [= Adam-
sianus, Dkr.], M. 168, several vars., and Adula cinnamomea, var. M. 177.
405. Chama Buddiana (in poor condition) = Ch. (?frondosa, var.) fornicata,
M. 121 b.
406. Chama ?cormigata, small valve ; large one ? = Ch. Mexicana, reversed.
407. Chama echinata. C. B. Ad., ? Mexicana, ]\m.,+Buddiana, jun
414. Area ?aviculoides, C. B. Ad., appears a young Scapharca.
419. Arcapholadiformis Sarbatiagradata, var.
422. Area shnilis, scarcely a variety of A. tubercidosa, no. 425.
432. Cardium planicostatum, C. B. Ad., may be a worn valve of Hemicardia bian-
gulata, but more resembles a ballast specimen of the W. Indian H. media.
435. Venus ?amathusia, C. B. A.d., = Anomalocardia subimbricata, M. 113
436. Venus discors Tapes grata, M. 110, var.,+ T. histrionica, M. 109.
442. Venus, sp. b,= Chione sugillata, Eve. ( = ?crenifera, M. 105).
450. Gouldia Paci/ica, M. 116, does not belong to the Professor's genus, but is a
form of Crassatetta.
451. Cyrena maritima. ll The discovery of Cyrena in brackish water is a fact of
some importance to geologists, which was duly appreciated by D'Orb " (T.
Prime, in Ann. Lye. N. Y. 1861, p. 314.)
457. Donax rostratus, C. B. Ad. (non Gld., MS., and from it Cpr. in M. Appendix,
p. 549), teste type-valve =D. carinatus, Mus. Cum. olim, and from it M. 71 ;
non^Z). carinatus, Mus. Cum. hodie, and type, teste Hanl.,=i>. culminahis,
459. Tel/ina cognata Psammobia casta, Eve., teste Cuming.
465. Tellina felix. The affiliation of this shell to Strigillafucata, Gld., MS., was
doubtless due to an accidental error in labelling. No. 476 is th" e same
468. Tellina piiella. Resembles T. felix, not ??puella, M. 59.
471. Tellina simulans. The type-valve exactly accords with the Professor's W
473. Tellina vicina, C. B. Ad.,-versicolor, C. B. Ad., MS. on label. Larger than
most W. Indian specimens, which exactly accord with the Acapulcans, and
are varieties of Heterodonax bimaculatus. The Panamic shells resemble
the Lower Califorman, which are Psammobia Paci/ica, Conr.
477. Petricola cognata. Perfect specimens are P. pholadiformis, teste Cum
478. Saxicava tennis, Sby., C. B. Ad., H. and A. Ad.,='Petricola tennis, H. and A.
Ad. Gen. pp. 349-441, and better accords with the latter genus.
479,482. Cumingia coarctata = lamellosa, var. M. 42.
480, 481. Cumingia trigonularis, M. 43.
483. Cumingia, sp. c, = M. 45, and, if not described, may stand as C. Adamsil
484. Cuminyia, sp. rf, = M. tablet 107, p. 31.
ON MOLLUSCA CVF THE WEST COAST OF NORTH AMERICA. 553
485. Ampliidesma bicolor = Semele ?renusta, M. 41 (non A. Ad.)-
487. Ampliidesma proximum, probably =486, ellipticum, var. : not Semele proximo,,
M. 4Q, = S.Jlavescens, Gld., M. p. 54S.
489. Ampliidesma striosum, resembles Semele pulchra, no. 488.
491. Ampliidesma ventricosum. Scarcely perfect enough to distinguish the genus.
The valve outside resembles Macoma solidula.
497. Anatina alta. A valve of Periploma ; probably one of the Gulf species.
498. Pandora cornuta, named and described from a fractured growth ; resembles
499 ; 500 are varieties of the same species of Azara, of which perhaps no. 50i is an
506. Corbula rubra= C, biracliata, jun., no. 503, M. 31. No. 509 are dead valves
of the same,= C. poly chroma, Cpr.
508. Corbula, sp. a, resembles C. pustulosa, M. 32.
510. Solecurtus affinis, probably = S. Caribbceus = Siliquaria gibba, Spengl., S.I.
Check-List, no. 222. The W. African specimens are affiliated to the same
species by Mr. Cuming. The Mazatlan shells, M. 37, have a different
aspect, but closely resemble the Ariquibo specimens in Mus. Amherst.
511. Solen rwlis is named Sokna obliqua, Spengl., in Mus. Gum. It appears iden-
tical with Ensatella ambiaua, Lam., as figured by Deless. ; but S. amlit/ua
(Lam.), Swains., is slightly different, am I better agrees with the dead valves
of " & medius, Alatska," in Brit. Mus. These may, however, be only ballast-
valves. As S. ambigua, Lam., was described from America, and the form
is not known elsewhere, it probably represents the Panamic shell.
515. Pholas, sp. a, = laqueata. teste Cum.
516. Pholas, sp. b, closely resembles Daetylina dactylus; also La Paz, teste Rich.
The following species were collected by Prof. Adams, but do not appcr.r
in his Catalogue ; they were found either mixed with others in the Amherst
Museum or in the shell- washings of hjs duplicates*.
528. Coecum clatliratum.
529. Lepidopleurus tenuisculptus.
530. Ischnochiton Elenens.s,
531. Cerithiopsis, n. s.