1071 
2304 
40 
Scala bellastriata Carpenter. 
Scala crebricostata Carpenter. 
Scala Berryi 
Scala rectilaminata 
Scala (Cirostrema) Montereyensis 
Scala Lowei 
Scala Sawinze 2465 
Scala Groenlandica Perry. 
Scala cumingi Carpenter. 
Scala gracilis? Sowerby. 
Scala hindsii Carpenter. 
Scala indianorum Carpenter. 
Scala occidentalis Nyst. 
Scala retiporosa Cpr. 
Scalaria gracilis 
Scalaria subcoronata 
Scalaria hindsii Cpr and var subcoronata 
Scalaria indianorum Cpr 
Scalaria bellastriata Cpr 
Scalaria tincta 
Scaphella (Voluta) Arnheimi 
Scaphella stearnsii Dall. 
Schismope rimuloides Cpr. 
Schizothaerus nuttallii Conr 
Scissilabra dalli 
Scissurella (Schizotrochus) Kelseyi 
Scurria gigantea Gray. 
Scurria mesoluca Menke. 
3715—Seila assimilata C. B. Ad. 
565 
1577 
1194 
1063 
1072 
1499 
1500 
104 
2326 
410 
1178 
290 
473 
1342 
1163 
1064 
1065 
128 
1073 
183 
1941 
2008 
2009 
2010 
278 
1066 
1226 
156 
1067 
3165 
2266 
Seila montereyensis 
Selenites sportella Gould. 
Selenites sportella Gould. 
Selenites vancouverensis Lea. 
Selenites simplicilabris Ancey. 
Selenites Vancouverensis Keepi 
Selenites Vancouverensis hybrida 
Semele decisa 
Semele proxima C. B. Ad. 
Semele pulchra Sowerby. 
Semele rubropicta Dall. 
Semele rupium Sby. 
Serpulorbis squamigerus Carpenter. 
Serridens oblonga Cpr. 
Serripes centifilosum Carpenter. 
Serripes greenlandicus Chemnitz. 
Serripes laperousi Lamarck. 
Septifer bifurcatus 
Sigaretus concavus Lamarck. 
Sigaretus debilis Gld 
Sigaretus Oldroydi Dall. 
Siliqua patula alta 
Siliqua media Gray. 
Siliqua Nuttallii Conrad. 
Siliqua lucida Conr 
Siliqua patula Dixon. 
Sipho angustus E. A. Smith, ann mag nat hist, ser 5, 6:287. 
Siphonalia kellettii Fbs 
Siphonaria brannani Stearns. 
Siphonaria lecanium Philippi, 1846. 
Siphonaria lecanium Cpr. 
