INDEX OF SPECIES. 



101 



Scalaria 



raricostata, 33, 260, 336, 



P447- 

 regularis, 244, 284, 336, 



S 164. 



reflexa, 288. 336, Q 235. 

 statuminata, 230, O 336. 

 subcorouata, 99, 146. 

 ) subnodosa, 284, 336, S 



165. 



subulata, 216. 

 suprastriata, 260, 336, P 



446, P 447- 



tiara, no, 284, 336, S 164. 

 ?var. tiiicta, 146, 151, 244. 

 Turtonis, 244. 

 venosa, 230. 

 vulpiua, 206, 336. 

 Scapharca 



bifrons, 24, 154. 

 emarginata, 24. 

 labiata, 24. 

 nux, 24. 

 Schizopyga 



Californiana, 79. 

 Schizothaerus 



Nuttallii, 22, 25, 26, 69, 72, 76, 



86, 123, 126, 169. 

 maxiuius, 123. 

 Scintilla 



Cuiningii, 186. 

 Scissurella 



rimuloides, 34, 258. 

 Scrobicularia 

 alta, 26. 



angulata, Q 230. 

 biangularis, 303. 

 biangulata, 12, 195, Q 230, 



V2I 3 . 



Dombeyi, var. 272. 



producta, 40, 272, 284, 287, 



33, Q 230, S 1 60. 

 viridotincta, 284, 303, S 160. 

 Scutalus 



protetis, 158. 

 Xantusi, 158. 



Scutellina 



navicelloides, 31,37, I97|0 252, 



319, P 211. 

 Scurria 



(?yr.) funiculata, 98, 136. 



initra, 23, 26, 79, 84, 136, 170, 

 173, 174, 190, 199, 

 202, 209, 234, 297, 



319, 348, P292, V 222. 



pallida, 79, 284. 

 scurra, 170, V 222. 

 Segmentina 



Donbilli, 44. 

 Seila 



assimilata, 33, P 445. 

 Semele 



bicolor, 29, 105, O 303. 

 California, 287. 



var. 105, 151, 303. 



corrugata, 126. 



decisa. 22, 26, 126, 231, 303, 



0351, V 213. 

 elliptica, 303, P 28. 

 flavescens, 29, 39, 48, 105, 203, 



245, 303, 351, P 28, P 



548, U 199. 



flavicans, 48, 231, 279. 

 incongrua, 97, 126. 

 obliqua, 284, 303. 

 planata, 284, 303, S 160. 

 proxiraa, 39, 154, 203, 226, 



231, 245, 279, O 303, 



P 548, U 199- 

 pulchra, 23, 39, 78, 97, 126, 154, 



203, 303. 



punctata, 304, S 160. 

 rubrolineata, 22, 113, 126, 



163, 232, 303, 351, V 



212. 



rubrotincta, 284, 352. 

 rupium, 97, 126, 170, 304, 



0359- 

 simplex, 163, 195, 232, 



V 212. 



striosa, 203, 303. 

 tortuosa, 303. 



