3126 
3127 
3128 
3129 
3130 
3131 
217 
490 
1474 
447 
980 
260 
383 
355 
354 
1572 
2683 
981 
982 
983 
2023 
984 
1504 
991 
992 
3156 
3157 
989 
988 
34 
Phacoides (Lucinoma) annulatus Reeve, 1850. 
Phacoides (Lucinoma) sequizonatus Stearns, 1890. 
Phacoides (Epilucina Californicus 
Phacoides (Parvilucina) tenuicsulptus Cpr. 1865. 
Phacoides (Parvilucina) approximatus Dall, 1901. 
Phacoides (Bellucina) cancellaris Philippi, 1846.: 
Phasianella compta Gld 
Phasianella compta pulloides Carpenter. 
Phasianella (Tricolia) compta producta Dall. 
Phidiana iodinea 
Phidiana iodinea J. G. Cooper. 
Philine, species indet. 
Philobrya setosa Cooper 
Pholadidea ovoidea Gould 
Pholadidea penita Conrad 
Pholadidea penita parva Tryon. 
Pholadomya Pacifica 
Pholas crispata Linne. 
Pholas pacifica 
Phylaplysia taylori 
Phylaphysia Taylori 
Physa ampullacea Gould. 
Physa ampullacea columbiana 
Physa heterostropha Say. 
Physa humerosa Gld. 
Physa elata Gould. 
Physa aurantia Carpenter. 
Physa Gabbii Tryon. 
Physa diaphana Tryon. 
33 Physa ancillaria 
985 
986 
987 
335 
990 
993 
1564 
1565 
1566 
2536 
2567 
994 
995 
449 
996 
129 
Physa blandi Lea. 
Physa carltoni Lea. 
Physa costata Newcomb. 
Physa d’orbigniana Lea. 
Physa gyrina Say. 
Physa hypnorum Linne. 
Physa Gabbi D’Orbignyana Lea. 
Variety Traskii Lea. 
Physa virginea Gould. 
Physa Cooperi Tryon. 
Physa politissima Tryon. 
Physa Lordi Baird. 
Physa malleata Tryon. 
Physa traskii Lea. 
Physa triticea Lea. 
Pinna lanceolata 
49 Pisidium adamsi 
2723 
1953 
Pisidium Ashmuni 
Pisidium Roperi 
50 Pisidium compressum 
1510 
2690 
2382 
1691 
2564 
1031 
1032 
1033 
1034 
1035 
Pisidium Idahoense Roper. 
Pisidium Marci 
Pisidium huachucanum Pils. 
Pisidium Randolphii Roper. 
Pisidium Californicum Newe. 
Pisidium occidentale Newcomb. 
Pisidium insigne Gabb. 
Pisidium ferrugineum Morse. 
Pisidium compressum Prime. 
Pisidium abditum Haldeman. 
