ON JIOLLUSCA OF THE WEST COAST OF NOKTH A:\rETlinA.. 531 



^tia, Page. 



15. Vrepidlda lingalata. [Described from a wom specimen. Perfect shells 



cannot be separated from C. Uhhata, Rve.,= 6'. ? dorsata, var. bilohata, 

 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. navieelloides, 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, 

 Gld., = exuviata, 'Nu.tt.f=perfora7is, Val. The Lessonoid form is C. 

 fimbriata, Rve. The young appears to be C. minuta, Midd. But the 

 " C. nummaria, Gld.," of Mus. Cum., is quite a distinct species, not known 

 from the American coast.] 



50, 244. Natica (Lunatia) caurim+j . ^_ j^.^ g^, ^ g^^ j_ 



00, 244. j\atica {jbimatia) sotuta ) " 



50, 244. Natica {Limatia) ak/ida ; " R. Negi-o," E. E. Shells ; " Oregon," E. E. Moll, 

 [vere : = voung of L. Lnvisii, Gld., July 1847, =i. herailtea, Midd., 1849] , 



52. Lacuna carinnta, Gld., Nov. 1848 [X. solidula, Lov., 1846. Finmark]. 



C2, 245. Zitorina patula, Gld. [non JefFr.], Mar. 184:9,=Z.planaxis [Nutt.], Phil., 

 1847. 



62, 53. Zitorina hpida, scutulata, at jdena [are shown by large series to be varieties 

 of one species]. 



99. Zitorina cincta, Gld., Aug. 1847, Puget Sd. [=i. Sitchana, Phil., 1845. 



This species appears to have been overlooked in the B. E. Jiloll.] 



61. Cerithium irroratiim, Gld. [= C. o6es2(TO, Shy. sen., teste H. Cuming. The 



type proves this to be an E. I. species, and not the Paiiamic C, ste)-cus- 

 mascarum, Val., as supposed by Dr. Gld. ; v. 0. B, Ad. in locol. 



C2. Cerithium Jilosum, Gld., May 1849 [= Turritella Zschricktii, Midd., 1849, 



{Bittium). Comp. C. Jilosum, Phil., Z. t M. 1848, p. 84. California]. 



(;4, 245. Fusus {Beld) jidicida. 



(J4, 245. Fimis {Trophon) Orpheus [(non Baird.) = T. Fabricii, Moll., in Br. Mus.] 



C7, 245. Buccinum (Nassa, a. g. Tritia) fossatum. Ccesia in Ind. p. 253. \_=N. 

 elegans, Rve., 1842, non Dujardin : =Zaphon e., Add.]. 



70,245. Nassa (Tritia) mendica=N. TVbodwardi, Fbs., 1850 [^from types ;+iV. 

 Gibbesii, Coop.]. 



71, 245. Columbella (Aha) gausapata. [Belongs to the Nassoid group, Amycla."] 



75, Ml/a prescisa [ = M. truncata. Scarcely even a variety; but approaches 



the form Aldrovandi.'] 



76, 245. Zutrana (Tresus) capax. [Dr. G. revives his excellent name ; Z. maxima, 



Jonas, 1844, being anterior to Midd. Conrad's name, Schizothcerus 

 Nuttallii, is, however, very much earlier.] 



77, 246. Osteodesma (Zyonsid) bracteatum [+ O. mtidum, Gld., in different states 



of preservatibn, =Z. Californica, Conr. The " golden nacre " of O. brac- 

 teatum is due to incipient decay, as generally happens in Anomiads]. 



83, 246. Cardita (Aciinoboltcs) ventricosa. . [Appears to be a local variety of the 

 ancient Miocene species, Vertericardiaborealis;+C. occidentalis, Conr., 

 + C. subtenta, Conr. (fossil) probably.] 



8.3. Cardium blandum, 1850. [A finely grown ?var. of C Californiense, Desh., 



1839, Midd. (non C. Calif ornia)ium,Canr.,1837, = corbis,Ya.v.) = C.pseiido- 

 fossile, Rve., 1844. The name is so like the preoccupied Calif ornianum 

 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 northei-n form of Tapes staminea, Conr., which is the Saxidomus 

 Petitii of Desh., and includes V. ruderata, Desh. But the "specimen, 

 3| 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 Pananiic species^ 

 as had been supposed from Col. Jewett's label]. 



87, 246. Anodonta cognata — A. Oregonensis, Lea (probably). 



87. Anodonta feminalis [_ = A. angulata, var., teste Lea2> 



2 ' 17 



