Boreoptrophon Kamchatkanus Dall. 

 Boreotrophon mazatlanicus Dall. 

 Boreotrophon multicostatus Esch. 

 Boreotrophon orpheus Gould. 

 Boreotrophon pacificus Dall. 

 Boreotrophon panamensis Dall. 

 Boreoptrophon peregrinus Dall. 

 Boreotrophon rotundatus Dall. 

 Boreotrophon scitulus Dall. 1891. 

 Boreotrophon stuarti E. A. Smith. 1880. 

 Boreotrophon (Stuarti var. ? ) smithi Dall. 

 Boreotrophon tenuisculptus Cpr. 1866. 

 Boreotrophon tripherus Dall. 

 Bornia pulchra Philippi. 

 Bornia retifera Dall. 

 Bryophila setosa Carpenter. 

 Buccinum aleuticum Dall. 

 Buccinum angulosuni Gray. 

 Buccinum castaneum 

 Buccinum compactum Dall. 

 Buccinum cyaneum Brug. 



B. cyaneum Brug. var. Mcerchianum Fischer. 

 Buccinum glaciale Stimpson. 

 Buccinum morchianum Fischer. 

 Buccinum ovulum Dall. 

 Buccinum percrassum Dall. 

 Buccinum picturatum. Aleutian Islands. 

 Buccinum plectrum Stimpson. 

 Buccinum polare Gray. 

 Buccinum strigillatum Dall. 

 Buccinum taphrium Dall. 



Buccinum tenellum 

 f?uccinum undatum Linne. 

 Buccinum viride Dall. 

 Buccinium viridum Dall. 

 Bulimulus (Scutalus) Montezuma Dall. 

 Bulimulus Baileyi Dall. 

 B: (Leptobyrsus) veseyanus Dall. 

 B: (Leptobyrsus) Bryanti 

 Bulimulus (Orthotomium) Beldingi 

 B: (Orthotomium) Cooperi 

 B: (Orthotomium) deciflens 

 B: (Orthotomium) levis 

 B: (Orthotomium) ramentosus 

 Bulimulus hypodon 

 Bulimulus lamellifer 

 Bulimulus (Pleuropyrgus) Habeli 

 Bulimulus Gabbi 



B: (Leptobyrsus) inscendens W. G. Binney. 

 Bulimulus inscendens Bryanti 

 Bulimulus proteus 



B: (Mesembrinus) Xantusi W. G. Binney. 

 B: (Leptobyrsus) spirifer Gabb. 

 B: (Orthotomium) sufflatus Gould. 

 B: (Orthotomium?) pilula W. G. Binney 

 21 11 Bulimulus pallidior Sby. 



2116 B: (Leptobyrsus) artemesia W. G. Binney 

 2114 B: (Drymasus) californicus Reeve. 

 2118 B: (Leptobyrsus) excelsus Gould. 

 35 Bulinus hypnorum 



1404 



1415 



1409 



1405 



1411 



1416 



1408 



1419 



1403 



1406 



1407 



1402 



1413 



1340 



1341 



680 



534 



1376 



1378 



681 



2071 



1223 



682 



683 



535 



1222 



1380 



1377 



1221 



513 



514 



1379 



684 



685 



556 



2112 



2113 



2121 



2120 



2125 



2126 



2127 



2128 



2129 



1707 



1708 



1607 



3135 



2117 



3136 



3137 



2115 



2119 



2122 



2123 



