1983 
2927 
2717 
675 
215 
216 
2622 
209 
2623 
3037 
428 
3030 
676 
3018 
3019 
3020 
677 
3036 
3026 
3027 
3031 
2410 
566 
567 
2624 
568 
678 
427 
3034 
426 
2625 
3035 
3025 
3015 
3032 
3038 
679 
2626 
3023 
3024 
2627 
3028 
3016 
208 
570 
3022 
3021 
569 
3017 
489 
1414 
1417 
1418 
1410 
1420 
1421 
1422 
1423 
1412 
2628 
Bifidaria quadridentata Sterki. 
Bifidaria riograndensis Sterki, ined. 
Bifidaria (Chaenaxis) tuba intuscostata 
Binneya notabilis Cooper. 
Bithinella binneyi Tryon. 
Bithinella intermedia Tryon 
Bittium acicula Stimp. 
Bittium armillatum Cpr 
Bittium armillatum ornatissimum Bartsch. 
Bittium Arnoldi 
Bittium asperum Gabb. 3029 
Variety Lomaense 
Bittium attenuatum Carpenter. 
B: attenuatum boreale 
Variety multifilosum. San Pedro, Cal. 
Variety latifilosum. Terminal Island, Cal. 
B. (Elachista) californicum 
Bittium casmaliense 
Bittium (Lirobittium) catalinense 
Variety inornatum 
Bittium cerralvoense 
Bittium eschrichti Midd. 
Bittium (Stylidium) eschrichti icelum 
B. Eschrichti montereyensis. Monterey, Cal. 
Bittium esuriens 
Bittium esuriens multifilosum 
Bittium fastigiatum Carpenter. 
Variety Esuriens Carpenter. 
Bittium fetellum 
Bittium filosum Gould. 
Bittium fortior Cpr. 
Bittium giganteum 
Bittium (Lirobittium) imterfossa Cpr. 
Bittium Johnstone 
Bittium (Semibittium) Larum 
Bittium mexicanum 
Bittium munitum Carpenter. 
Bittium munitum munitoides Bartsch. 
Bittium (Semibittium) Nicholsi 
Bittium (Semibittium) nitens Cpr. 
Bittium Oldroydii Bartsch. 3033 
Bittium (Lirobittium) ornatissimum 
Bittium purpureum 
Bittium quadrifilatum Cpr 
Bittium quadrifilatum ingens 
Bittium (Semibittium) rugatum Cpr. 
Bittium (Semibittium) subplanatum 
Bittium tumidum 
Bittium vancouverense 
Bivonia compacta Carpenter. 
Boreotrophon alaskanus Dall. 
Boreotrophon avalonensis Dall. 
B. (avalonensis variety?) eucymatus Dall. 
Boreotrophon beringi Dall. 
Boreotrophon cepula Sby. 
Variety cymatus. Pribilof Islands, 71 fms. 
Boreotrophon dalli Kobelt. 
Variety altus. Spire exceptionally elevated. 
Boreotrophon disparillis Dall. 
Boreotrophon gracilis Perry. 
