ON MOLLtJSCA OP THE WEST COAST OF NORTH AMERICA. 273 



No, 



No. of 

 Speci- 

 mens. 



Other Localities. 



217 



218 



219 

 220 

 221 

 222 

 223 

 224 

 225 

 226 

 227 

 228 

 229 

 230 

 231 



232 



232 



i233 



'23-4 

 i235 

 236 



237 



238 

 239 



124:; 



1243 



1244 



1245 



246 



1247 



!248 



•249 



250 



251 



252 



253 



254 



255 



256 



25 



258 



259 



260 



261 



J62 



!63 



!64 



;65 



,66 



Caecum parvum, n. s 



[? = C. undatum, jun.] 



— pygmaeum, n. s 



[= C. firmatum, jun.] 



Chemnitzia aculeus, n. s 



acuminata,n.s.(?Chrysallida) 



— affinis, n. s 



clathratula,n.s.(Chrysallida) 



— communis, n.s.(Chrj'sallida) 



— gracilior, n. s 



— major, n. s 



marginata,n.s.(ChrysaIMa) 



— Panamensis, n. s 



— similis, u. s 



— striosa, n. s 



— turrita, n. s 



?Littorina angiostoma, u.s. (.'Fos 



sarus.) 



— aspera, Phil 



under stones, 1. w. 



sand, ^-t.— h. w. 



ledges or large pieces 

 of rock, h. w. + 



, var. 



atrata, n. s. 



conspersa, PAzV. 



- excavata, n. s. (Fossarus) 

 fasciata, Gray 



in or near cavities of 



rocks, ^-tide— h.w. 



large piecesof rk.,h. w. 



foveata, n. s. (.'Fossarus).. 



megasoma, u.s. (.'Fossarus) 



— Pparvula, PA27.,var.dubiosa. 

 [Comp. L. Philippii.^ 



— pulchra, Sow 



on trks. & brs. of small 

 trees, ^-t.— h. w. 



— puncticulata, Phil. 

 \_ = conf^ersa, var.] 



— varia 



Rissoa clandestina, n. s 



firmata, n. s 



fortis, n. s 



.' inconspicua,n.s.(non^W.) 



infrequens, n. s 



Janus, n. s 



notabilis, n. s 



scalariformis, n. s 



. sp 



PCingula inconspicua, u. s 



paupercula, u. s 



? terebeUum, n. s 



.' turrita, n. s 



.'Litiopa saxicola, n. s. (Cingula) 

 .'Adeorbis abjecta,n.s. (Fossarus) 



VitrineUa concinna, n. s 



exigua,n.s 



Janus, n. s 



miouta, n. s. (Teinostoma) 



— modesta, n. s 



— Panamensis, n. s 



— parva, n. s 



— perparva, n. s 



— regularis, n. s. 



cav. of rough ledge of 



rocks, h. w.-f 

 on mangroves, grow- 

 ing from mud, h. w. — 

 on pieces of rk., h. w. 



on trunks & branches 

 of trees, ^-t.—h.w. 



under stones, 1. w. 



under stones, 1. w. 



4 

 1 

 2 

 10 

 90 

 2 

 1 

 2 

 11 

 2 

 1 

 3 

 3 



2400 



33 

 3300 



320 



1 

 160 



2 



1 



600 



11 



80 



300 



2 

 1 



31 

 1 

 1 

 2 

 1 

 1 

 1 

 3 

 4 

 1 

 1 

 7 



40 

 1 

 7 

 1 

 4 

 1 



24 

 13 

 3 

 1 



" Sitcha, San Salvador, Mex.," Phil. 



Real Llejos. 



Real Llejos. 



" Pan., Guay., Cusma, Peru," Phil. 

 Chiloe, Petit. 



1856. 



