7 
1404 Boreoptrophon Kamchatkanus Dall. 
1415 Boreotrophon mazatlanicus Dall. 
1409 Boreotrophon multicostatus Esch. 
1405 Boreotrophon orpheus Gould. 
1411 Boreotrophon pacificus Dall. 
1416 Boreotrophon panamensis Dall. 
1408 Boreoptrophon peregrinus Dall. 
1419 Boreotrophon rotundatus Dall. 
1403 Boreotrophon scitulus Dall. 1891. 
1406 Boreotrophon stuarti E. A. Smith. 1880. 
1407 Boreotrophon (Stuarti var.?)smithi Dall. 
1402 Boreotrophon tenuisculptus Cpr. 1866. 
1413 Boreotrophon tripherus Dall. 
1340 Bornia pulchra Philippi. 
1341 Bornia retifera Dall. 
680 Bryophila setosa Carpenter. 
534 Buccinum aleuticum Dall. 
1376 Buccinum angulosum Gray. 
1378 Buccinum castaneum 
681 Buccinum compactum Dall. 
2071 Buccinum cyaneum Brug. 
1223 3B. cyaneum Brug. var. Moerchianum Fischer. 
682 Buccinum glaciale Stimpson. 
683 Buccinum morchianum Fischer. 
535 Buccinum ovulum Dall. 
1222 Buccinum percrassum Dall. 
1380 Buccinum picturatum. Aleutian Islands. 
1377 Buccinum plectrum Stimpson. 
1221 Buccinum polare Gray. 
513 Buccinum strigillatum Dall. 
514 Buccinum taphrium Dall. 
1379 Buccinum tenellum 
684 Buccinum undatum Linne. 
685 Buccinum viride Dall. 
556 = =6Buccinium viridum Dall. 
2112 Bulimulus (Scutalus) Montezuma Dall. 
2113 Bulimulus Baileyi Dall. 
2121 3B: (Leptobyrsus) veseyanus Dall. 
2120 B: (Leptobyrsus) Bryanti 
2125 Bulimulus (Orthotomium) Beldingi 
2126 3B: (Orthotomium) Cooperi 
2127 3B: (Orthotomium) decifiens 
2128 B: (Orthotomium) levis 
2129 B: (Orthotomium) ramentosus 
1707 SBulimulus hypodon 
1708 Bulimulus lamellifer 
1607 Bulimulus (Pleuropyrgus) Habeli 
3135 Bulimulus Gabbi 
2117 B: (Leptobyrsus) inscendens W. G. Binney. 
$136 Bulimulus inscendens Bryanti 
3137 Bulimulus proteus 
2115 B: (Mesembrinus) Xantusi W. G. Binney. 
2119 3B: (Leptobyrsus) spirifer Gabb. 
2122 3B: (Orthotomium) sufflatus Gould. 
2123 +B: (Orthotomium?) pilula W. G. Binney. 
2111 Bulimulus pallidior Sby. 
2116 3B: (Leptobyrsus) artemesia W. G. Binney. 
2114 B: (Drymezus) californicus Reeve. 
2118 B: (Leptobyrsus) excelsus Gould. 
35 Bulinus hypnorum 
