1983 Bifldaria quadridentata Sterki. 

 2927 Bifldaria riograndensis Sterki, ined. 

 2717 Bifldaria (Chaenaxis) tuba intuscostata 



675 Binneya notabilis Cooper. 



215 Bi tli in el la binneyi Tryon. 



216 Bithinella intermedia Tryon 



2622 Bittium acicula Stimp. 

 209 Bittium armillatum Cpr 



2623 Bittium armillatum ornatissimum Bartsch. 



3037 Bittium Arnoldi 



428 Bittium asperum Gabb. 3029 



3030 Variety Lomaense 



676 Bittium attenuatum Carpenter. 



3018 B: attenuatum boreale 



3019 Variety multifilosum. San Pedro, Cal. 



3020 Variety latifilosum. Terminal Island, Cal. 



677 B. (Elachista) calif ornicum 

 3036 Bittium casmaliense 



3026 Bittium (Lirobittium) catalinense 



3027 Variety inornatum 



3031 Bittium cerralvoense 

 2410 Bittium eschrichti Midd. 



566 Bittium (Stylidium) eschrichti icelum 



567 B. Eschrichti montereyensis. Monterey, Cal. 



2624 Bittium esuriens 



568 Bittium esuriens multifilosum 



678 Bittium fastigiatum Carpenter. 

 427 Variety Esuriens Carpenter. 



3034 Bittium fetellum 



426 Bittium filosum Gould. 



2625 Bittium fortior Cpr. 



3035 Bittium giganteum 



3025 Bittium (Lirobittium) interfossa Cpr. • 



3015 Bittium Johnstonse 



3032 Bittium (Semibittium) Larum 



3038 Bittium mexicanum 



679 Bittium munitum Carpenter. 



2626 Bittium munitum munitoides Bartscb. 



3023 Bittium (Semibittium) Nicholsi 



3024 Bittium (Semibittium) nitens Cpr. 



2627 Bittium Oldroydii Bartscb. 3033 



3028 Bittium (Lirobittium) ornatissimum 



3016 Bittium purpureum 



208 Bittium quadrifilatum Cpr 



570 Bittium quadrifilatum ingens 



3022 Bittium (Semibittium) rugatum Cpr. 



3021 Bittium (Semibittium) subplanatum 



569 Bittium tumidum 



3017 Bittium vancouverense 

 489 Bivonia compacta Carpenter. 

 1414 Boreotrophon alaskanus Dall. 



1417 Boreotrophon avalonensis Dall. 



1418 B. (avalonensis variety?) eucymatus Dall. 

 1410 Boreotrophon beringi Dall. 



1420 Boreotrophon cepula Sby. 



1421 Variety cymatus. Pribilof Islands, 71 fms. 



1422 Boreotrophon dalli Kobelt. 



1423 Variety altus. Spire exceptionally elevated. 

 1412 Boreotrophon dispariUis Dall. 



2628 Boreotrophon gracilis Perry. 



