92 



INDEX OP SPECIES. 



Physa 



Hildrethian^, 1 60. 



humerosa, 79, 90, 160, 283, 



O316. 

 hjpnorum, 116, 222. 

 iiiflata, 160. 

 Lordi, 90, 93, 160. 

 Maugeiffi, 61, 162, 364. 

 osoulaus 160, 265. 

 Peruviana, 237, 251, P 179, 



P 180, P 540. 

 Phillipii, 160. 

 planorbula, 161. 

 plicata, 160. 

 purpurostoma, 44. 

 Sowei'byana, 44. • 

 striata, 160. 

 subarata, 160. 

 trlticea, 120, 161. 

 virgata, 160, 283, 316. 

 virginea, 160, 209, 213, 

 O316. 

 Pila 



miiltijugis, P 255. 

 ornata, P 255. 

 soabricosta, P 255. 

 Fileopsis 



aiitiquata, P 297. 

 mitrula, 255, P 297, R 3. 

 pilosa, 275. 

 subrufa) R 4. 

 Pilidium 



commodum, 216, 220, 

 O233. 

 Pinna 



lanoeolata, 107, 208, 249, 



O311, P 147. 

 maura, 24, 38, 107, 199, 185, 



249, 6 277, 311, P 146. 

 nigra, 43. 



rudis 241, 282, 296. 

 rugosa, 27, 107, 185, 249, 



3ii,P 147. 

 tuberculosa, 24, 38, 199, 185, 

 O277. 



Pirena 



Californica, 200, 209, 230, 

 U 206, V 226. 

 Pisania 



sequilirata, 263, 344. 



articulata, 226. 



cinis, 344, 361. 



D'Orbigiiyi, 180. 



elata, 105, 221. 



elegans, 288. 



fortis, 25, 322, 324. 



gemmata, 25, 29, 196, 204, 

 236, 263, 344, 364, 



P5IS- 

 hsemastoma, 231. 

 insignis, 25, 28, 179, 324, 325, 



204, 263, P 514, P 515, 



PSi6. 

 lugubris, 112, 344. 

 mutabilis, P 514. 

 nigrocostata, 344. 

 pagodus, 25, [79, 344, P 552. 



(? far. ) sequilirata, P 515. 



Panamensis, 344. 



pastiuaca, 344. 



pusio, 226. 



ringens, 25, 179, 263, 283, 



0296,0344,0 363, P 518. 

 sanguinolenta, 25, 28, 112, 155, 



179, 177, 204, 263, 



0344, PS17, PSiS. 

 Stimpsoniaua, 344. 

 tincta, 363. 

 Pisidium « 



abdituin, 165. 

 amplum, 165. 

 Kurtzii, 165. 

 notatum, 165. 

 obliquura, 222. 

 obscurum, 165. 

 occideiitale, 118, 165. 

 plenum, 165. 

 regulare, 165. 

 resartum, 165. 

 retusum, 165. 



