358 
Phalodidea . 204 
darwinli .......103 
OVOIdea seen =e 103 
parva . 103 
penita . . .102 
IPO IA) gooonce 277 
SELOSAM eacosinitoruct: 30 
IHNOES Gopooodoc. 204 
PACiicalene nee LOL 
ey Salat nc oie 314 
ampullacea 5 its 
Canltontqeeeeses I51 
COStata ese I5I 
gabbigie........ I5I 
heterostropha ..150 
politissima, .....151 
IP SIE, Coc snbac 315 
columbella ..... 152 
Pisidium 285 
EVOKGbKEGROR Goo Guar 63 
ASMA eee 64 
compressum 64 
idahoense ..... 64 
occidentale . 64 
Trowelli) waa. 45. 64 
ultramontanum . 64 
Pitaria 250 
newcombiana .. 68 
Placiphorella 350 
velata, sfee.u¢.< 269 
Placuanomia . 44 
macroschisma .. 44 
Planorbisme see 315 
ammon 4..cen a5 
bicarinatus .154 
PALVUSE Nee 153 
(WAKO | Sannoe 153 
vermicularis 153 
IPIBNGGKEY  Giso co on0% 274 
aneminoides 12 
Pilatyodonwe.saee 201 
cancellatus ..... 90 
Pleurobranchus ..208 
Californiciusss. 11s 
Pleurotoma, 225-5 2317 
carpenteriana ..157 
Gigcinata: eee 158 
BSMMEEN Soouoe 157 
tryoniana ......158 
WADOSA) Sites 158 
INDEX 
Pleurodermon .296 
Polygyra 306 
armigera .138 
chiricahuana ...139 
columbiana ....138 
GIXBEL con cocusacligs 
labiosaleeeerer 138 
lonicatamane meee 139 
mearnsii .140 
MAU ave ele 139 
ptychophora ...138 
townsendiana ..137 
Polygerella ...... 306 
Polynices@®....,... 341 
leWwasiih cee tee 227 
recluzianay o..e6 228 
Pomatiopsis ..... 339 
calitornical..... 222 
Pomaulax .i0n4: 343 
TMG OSUS eens 237 
Pompholyx ...... 315 
elusal jc cne ae 152 
IPGIene entice eae 333 
oregonensis ....206 
PRIstolom@an sec. 300 
aniSitt olsen 120 
stearnsi 120 
Protocandiay eer 285 
Cenitifilosa = sae. 63 
richardsonii .... 63 
IPsepiiideay mee eee 288 
lordi aA 
OValiSM ssa naeene 75 
Psammobia sees 288 
californica... 21: 77 
edentula ....... 78 
rubro-radiata .. 77 
Buietttmi es scence 302 
conspectum ....124 
pasadensouneerale5 
randolphit) oo... 125 
Puncturellas 4... 346 
COOpenl ate ne 258 
COU BURNIEY aoa oboc 257 
Galeateameenene 257 
MAJOR veecsc ee 257 
Prpar ctiieereyetas 309 
Pirpillay se saessuats 310 
Purpura 
crispata 
lima 
Sax COLA 
Pyramidella 
conica 
variegata 
Pyramidula 
asteriscus 
lineatus 
Pyrgulopsis 
Radix 
amp laa emer 
utahensis 
Raeta 
undulata 
Ranella 
eee eee 
<) whe! oheta 
Ce 
Rhextaxis 
punctocaelata .. 
Rissoa 
Rissoina 
Rupellaria 
lamillifera 
Sanguinolaria .... 
mitittal leer 
Saxicava 
arctica 
pholadis 
rugosa 
Saxidomus 
aratus 
giganteus 
nuttallii 
Scala’ 533 Geer. 
bellastriata 
borealis 
crebricostata .. 
— hindsii 
indianorum .... 
Scalaria 
Scaphella 
arnheimi 
stearnsil 
Schismope 
Seila 
@, esireie 
eee ee eee 
ic 0) a) hfe .ene, 
see ee tee 
| de \fo\oliahin lie 
ereeecee 
