ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 627 



brief diagnosis. The name should therefore be dropped. The shell, pi. 19, 

 fig. 15 {not l6)=Chioiie ftiniiUimn, iShy.,m}.S9; a good Lower Californian 

 species. It seems that the error was not in numbering of the figures, as 

 Mr. Nuttall supposed, hut i-i Conrad's identification of Broderip's species]. 



^.Chiinieexioriita (is closely related to Ch. mcciuda; the unique type, however, 

 in Brit. Mus. displays characteristic differences of sculpture. It is singu- 

 larly like the Vi. Indian Ch. aincdlata, and may prove exotic]. 



Al.Cypricinih'aCalifoniicu [=(\ Gi<iiiiaca,ha.in.,= C. Dvpen-yiiUesa. Almost 

 certainly from the Sandwich Is. J. 



45, 456. Cardiinn CuUfuruidtium i=V. NiittaUii, vnr. The species is named '" C, 

 corhis, Mart.," by Desh. MS. in Mus. Brit, and CuiuingJ. 



4C. Cai dill III qiuuhagenai ium \_=C. hdeoUihrum, Gld.]. 



51. 0. a.ih'ii, no. 32. 



66. Jlodiolii redd. [Described fi-om very young specimens. The broad form 13 

 M.fabellafa, Gld.1 



69. Mytiiiis bifiirratm. {The type is lost ; the fijjure and description wnuM suit 

 many speciv.'S. It is allocated, in Mus. Cum., to the Calitomian Sepiif^r^ 

 but by Pease to a Sandwich Island Mi/tilus.'] 



CO. [None of Conrad's species of Isojin vion have been confirmed as from Califor- 

 nia. They are known to inhabit the Pacific Lslands.] 



626. [Mr. Nuttall also broupht an oyster, which he named in 5IS. O. laftcniidafu, 

 = 0. liirida, var. ; and Hinnites yiijaideiis, Gray, = /f. Poidsnui, Coiu\ ] 



64. [Dr. Gould states that //. Nichliniaua, Lea, = .ff. Cidiforniensis, Pfr., Chemn., 

 Rve. ; but that //. CalifiiniiensL, Lea. is distinct.] 



69. Helix Townseiidiiina \ =11. <enigmosa, Gld. MS.]. 



74. Chiton Xidtallii [is an IschiKcititon]. 



lb. Chiton acutiis [is an abeirant fonn of Mopalia. '' Chiton connimilis" Nutt. ilH. 

 in Brit. Mus., appears to be Mopalia Iliiidm, var. " Chiton Califvrnicus '' 

 Nutt. yiS.,=" Aea/ithopleiira " scabra, live.]. 



77. Patella muniiltata, Nutt. [(non Esch.) is now assigned in Mus. Cuming to 

 AciiKPa scabra, Nutt., var. liiiiafida^. 



83. Fissuiella onuda, Nutt. [ = F. volcano, Rve."'. 



Si. (iliiphia den idathrata, live. \_V. antea, p. 522. The shell has been lost.] 



fil5. H. Call oniiensis, Swains, [(not Californiana, Val., = r?//escf».>t), is an •-xtrenie 

 var. of II. Cracherodii. The series in the Smithsonian Mus. have 5, (!, 7, 

 8, and 9 holes; as soon as it has 10 and 11, it passes into Californieii.sis, 

 which was figured in 1821 with 9 holes. When these are numerous, they 

 are generally small in proportion]. 



91. Callio'stoina doliariiim [=C. canalicidatum, M^drt. This and C. annulatttvif 



Mart., are quite distinct from C.Jilosum, which= C. costrtfiim, Mart.^. 



92. Omphalius (iter [is the S. Amei-ican species. The common Californian shell is] 

 94. O. marginatum, Nutt. MS. [ = fiiiiebralis, A. Ad.]. 



976. The collection contains one specimen of Crcpidida dorsata. 

 103. [Is a Serjndorbis, without operc, tt'Ste Cooper.] 



100. Litorina tenebrata [slu)uld be patida, Gld. (non Jeffr.). Nuttall's MS. name 

 was published by Phil, in 1845]. 



107. Natica ?marocca)ia, var. Californica. [The varietal name must be dropped. 



The shell certainly came from the Sandwich Islands.] 



108. [The shell is Vifulmia salebrosa, jun., and not] Ranvlla triqiicfra. 



109. Mitra maura [Swaiu ., teste Rve. (?\x\i\)=M. orieiUalis, Gray, =M. " Chi- 



lensi-i," Kien.J. 

 no. Olirella (/landinaria, Nutt. [ = 0. biplicata, Shy.]. 



112, 113. Purpura aperta and F. harpa fare certainly from the Sandwich Islands!, 

 114. Purpura eniarginata [was described by Desh. from an immature specimen iij 



which a half-formed knob caused an " emargination." The adult is one 



very extreme form; P. ostrina, Gld., is another ; P. fmcata, IHjs., is a third. 



The normal condition is P. lapilbis, Cooper (npn Linn.),=s«J"('co/a, \'al. 



Mr. Nut'all's collection also contflins] T. criitpata, var. 

 lin. Monoceros brevidens [is an accidentally short-toothed form of M. InpiUoide^], 

 118. Cvrostoma Xuttallii .with C./oliaium and C.monoccros, Shy., belongs to ISit' 



purida], 



13 



