ON MOLI.rSCA OP THE WKST Cr>AST OP NORTH AMKRIC.V. 



617 



177 b.Toniatina ccrprt/t«, Gld, Otia, Small, white, smooth: but probably = worn 



young cidcitella. 

 173. Tornatitia eximia, Baird, P. Z. S. 1863, p. 67. Size moderate : fold appiessed : 



subrectangular. 

 179. Tornatina carituita, Maz. Cat. no. 223. 



lO. Cjflichna ?cylindracea, Linn. auct. Intermediate specimens, passing intj 

 'lf>Ob.Cj,'tichna var. attonsa, rounded off at apex. 



1 "^l. Cylichtia planata, n. s. Like mamillata, with apex flattened-ofl", and fold distinct. 

 182. Cylichna inculta, Gld. Otia. 

 \6i. Vulcula cylindrica, n. s. Like grain of rice, pointed at one end. 



Family Aplystadrc. 

 1*^4. Kenphjuia Californica, Cp. Proc. Cal. Ac. 15 inches long. 

 l&t>. Navarchus inermis, Cp. Proc. Cal. Ac. Grasses, on shore, Cp. 



Family IHeiiruphyUidiadce. 

 186. Pleurophyllidea Californica, Cp. Proc. Cal. Ac. Sandy flats, Cp. 



Order NumBHANCHiAXA. 

 137-198. All thenewNudibranchs are described in the Proc. CaL Ac Vule onto), 

 p. 609. Vide also Gld.'s Otia, and Each. Zool. Atlas. 



Subclass PULMONATA. 



For land and freshwater species, both of Pulmonates, Rostrifers, and BiraifM, 

 vide posted, paragraphs 115-119. 



Family Anrtcididee. 

 109. Mrlampus olivaceus, Cpr. Maz. Cat. no. 235. .i 



JJOJ. I'edipes liraius, Binn. Proc. Ac. N. S. PhU. 1801, p. 333. 



Family Siphonariada. 

 201. Siphonaria TliersiteSj n. a. Like lata alia: with stiong lung-rib and obsolete 

 scuJptui'e, 



133 



