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., 



1847. 

 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. 



Gibbesiij Coop.]. 

 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]* 



2 17 



