ee a NEw 
“I 
ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 52 
brief diagnosis, The name should therefore be dropped. The shell, pl. 19. 
fig. 15 (not 16)= Chione simillima, Sby., no. 39; a good, Lower Californian 
species. It seems that the error was not in the numbering of the figures, as 
Mr. Nuttall supposed, but in Conrad’s identification of Broderip’s species ]. 
40. Chione excavata bs closely related to’ Ch. suecincta; 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]. 
41. Cypricardia Californica [=C. Guiniaca, Lam,,=C. Duperryi, Desh, Almost 
certainly from the Sandwich Is. ]. 
45, 456. Cardium Californianum [= C. Nuttallit, var. The species is named “ C. 
corbis, Mart.,” by Desh. MS. in Mus. Brit. and Gane. 
46. Cardium quadragenarium [= C, hdeolabrum, Gld.}. 
51. v. anted, no. 32. 
56, Modiola recta. [Described from yery young specimens. The broad form is 
M. flabellata, Gd. 
59. Mytilus bifurcatus, [|The type is lost; the figure and description would suit 
many species. It is allocated, in Mus. Cum., to the Californian Septifer ; 
but by Pease to a Sandwich Island siyale 
60. [None of Conrad’s species of Isognomon 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, =H. Poulsoni, Contr. | 
64, [Dr. Gould states that H. Nickliniana, Lea,=H. Californiensis, Pfr., Chemn., 
Rve.; but that H. Californiensis, Lea, is distinct. | 
69. Helix Townsendiana [= H. eruginosa, Gld. MS. ]. 
74. Chiton Nuttallii [is an Ischnochiton]. 
76. Chiton acutus [is an aberrant form of Mopalia. ‘‘ Chiton consimilis,” Nutt. MS. 
in Brit. Mus., appears to be Mopalia Hindsii, var.“ Chiton Californicus ” 
Nutt. MS., =‘ Acanthopleura” scabra, Rye. ]. ee 
77. Patella mamillata, Nutt. [(non Esch.) is now assigned in Mus, Cuming to 
Acmea scabra, Nutt., var. imatula). 
85. Fissurella ornata, Nutt. [ =F. volcano, Rve.}. 
84. Glyphis densiclathrata, Rve. [ V. anted, p. 522, The shell has been lost. ] 
86. H. Califormiensis, Swains. [(not Californiana, Val.,=rufescens), is an extreme 
var. of H. Cracherodi. 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 Californiensis, 
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. filoswm, which= C. costatum, Mart. ]. 
92. Omphalius ater Gs the S. American species. The common Californian shell is] 
94. O. marginatus, Nutt. MS. [| =fwmebralis, A. Ad.}. 
976. The collection contains one specimen of Crepidula dorsata. 
103, [Is a Serpeorbis, without opere., 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. Californica. [The varietal name must be dropped. 
The shell certainly came from the Sandwich Islands. ] 
108. [The shell is Vitularia salebrosa, jun., and not] Ranella triquetra. 
109. Mitra maura [Swains., teste Rve. (? ubi)=M. orientalis, Gray, =M. “ Chi- 
lensis,’”’ Kien. ]. 
110, Olivella glandinaria, Nutt. | = O. biplicata, Sby.}. 
112, 113. Purpura aperta and P. harpa | ave certainly from the Sandwich Islands]. 
114, Purpura emarginata [was described by Desh. from an immature specimen in 
which a half-formed knob caused an “emargination.”” The adult.is one 
very extreme form; P. ostrina, Gld.,is another; P. fuscata, Fbs., is a third. 
The normal condition is P. dapillus, Cooper (non Linn.),=saaicola, Val. 
Mr. Nuttall’s collection also contains] P. crispata, var. 
116, Monoceros brevidens [is an accidentally short-toothed form of WM. lapilloides], 
118, abi Nuttallit rit C. foliatum and C. monoceros, Shy., belongs to Pwur- 
puride). ; 
