39 
1955 Pyramidula Cockerelli 
2018 Pyramidula elrodi 
1917 Pyramidula perspectiva 
1669 Pyramidula Randolphii 
1918 Pyramidula striatella 
1919 Variety Cronkhitei 
1889 Pyramidula strigosa 
1890-1916 Varieties or forms Binneyi, cooperi, multicostata, 
castanea, albofasciata, buttoni, gouldii, parma, jugalis, inter- 
sum, subcarinata, bicolor, lactea, picta, globulosa, trifasciata, 
confiuens, elevata, major, minor, Iowensis (extinct), concen- 
trata, Haydeni, Hemphilli, Gabbiana, Bruneri (oquirrhensis) 
and hybrida, have been described by Cockerell, Hemphill and 
others. See 1479 to 1485. 
2046 Pyramidula strigosa concentrata 
1886 Pyramidula solitaria 
1887 Variety occidentalis v. Martens. 
1888 Variety limitaris Dawson. 
1967 Pyrgulopsis Nevadensis Stearns. 
1160 Pythina rugifera Carpenter. 
63 Ranella californica 
2106 Ranella cruentata Sby. 
2703 Rangia Le Contei Conr. 
3161 Rhodea Californica Pfeiffer, 1846. 
3162 Variety Ramentosa Cp. 1891. 
1190 Rictaxis punctocelata 
1263 Rimula cucullata Gld. Is Puncturella c. 
1264 Rimula galatea Gld. Is Puncturella g. 
1044 Rissoa zequisculpta Carpenter. 
1045 Rissoa castanea Moller. 
1046 Rissoa compacta Carpenter. 
396 Rissoa acutilirata Carpenter. 
2716 Rissoa purpurea 
1047 Rissoa? cooperi Tryon. 
2044 Rissoa Kelseyi 
1048 _ Rissoa? exilis Tryon. 
1049 Rissoa fllosa Carpenter. 
2575 Rissoa (Alvania) Grippiana 
1051 Rissoa purpurea Dall. 
1$52 R. (Alvania) reticulata Carpenter. 
2037 Rissoina Bakeri 
205 Rissoina interfossa Cpr 
395 Rissoina purpurea Carpenter. 
3080 Rochefortia compressa. Gulf of Cal. 
2250 Rochefortia grippi Dall. 
2495 Rostanga pulchra 
484 Rupellaria lamellifera See 2186. 
2908 Sanguinolaria tellinoides A. Ad. 
2909 Sanguinolaria Hanleyi Bertin. 
2910 Sanguinolaria Nuttallii Conrad. 
107 Sanguinolaria nuttallii 
280 Saxicava rugosa Linn 
302 Saxidomus aratus Gld. 
1053 Saxidomus brevisiphonatus Carpenter. 
2162 Saxidomus giganteus 
376 Saxidomus gracilis Gould 
301 Saxidomus nuttallii Conr 
1568 Saxicava arctica L. 
356 Saxicava pholadis Linnaeus 
1169 Saxidomus squalidus Deshayes. 
