6a Canadian Arctic Expedition, 1913-18 



Philine cf . sinuata Stimpson, 20g. 



Cylichna nucleola Reeve, 20b-c. 



Utriculus semen Reeve,, 27s, 206-c. 



Agriolimax hyperboreus Westerlund. Nome, Camden bay. 



Succinea chrysis Westerlund, tundra at Nome. 



Lymncea caper ata Say; 28i (this probably = vahli Beck.) 



Lymncea stagnalis Linn^, var. appressa Say. Mackenzie river delta. 



Aplexa hypnorum Linn^. Camden bay; Demarcation point; pond on 

 Herschel island; pond at CoUinson point; brackish pond near 

 Teller, Grantley harbour; port' Clarence, Alaska. 



Lora trevelliana Turton, 27s. 



Admete middendorffiana Dall, 20d. 



Admete elongata Leche, 23. 



Beringius sp. egg-capsules, 20m. 



Chrysodomus sp. egg-capsules, 20m. 



Chrysodomus liratus Martyn, 206-c, 20m; 23. 



Chrysodomus solutus Herrman, 20d; 20g; 20m; 24. 



Chrysodomus saturus Martyn, 20fif; 24. 



Plicifusus johanseni Dall, 24. 



Plicifusus kroyeri MoUer, 23. 



Volutopsius stefanssoni DaU, 24. 



Buccinum sp. egg capsules, 20m, 24. 



Bucdnum tenue Gray, 22; 23. 



Buccinum orotundum Dall, 22. 



Buccinum normale Dall, 24. 



Buccinum angulosum subcostatum Dall, 24. 



Buccinum angulosum Gray, 24. 



Buccinum plectrum Stimpson, 24. 



Buccinum polare Gray, 24. 



Buccinum cyaneum Hancock, 24, 22. 



Buccinum glaciale Phipps, 24. 



Thais lamellosa Gmelin, 60a. 



Neptunea beringi Dall, 23. 



Fusitriton oregonense Redfield, 30d (adventitious). 



Boreoscala greenlandica Perry, 23. 



Tachyrhynchus erosus Couthouy, 54e. 



Lacuna divaricata Fabricius, 206-c, 20^, 20h. 



Littorina grandis Middendorff, 20d, 20g. 



Ldttorina sitkana Phihppi, 60a. 



Piliscus commodus Middendorff; 23; 24. 



Natica (Cryptonatica) dausa Broderip & Sowerby, 206-c; 20d; 20fif; 24; 

 54e. 



Euspira pallida Broderip & Sowerby, 23; 24; 28Z. 



Amauropsis purpurea Dall, 206-c; 20d; 24, 2Sl; 31a; 326. 



Velutina zonata Gould, 24. 



"Velutina" spongiophila Middendorff, 24. (Hydroid). 



Acmoea scutum var. patina Eschscholtz, 60o. 



Acmcea pelta Eschscholtz, 60a. 



Acmcea emydia Dall, 22. 



Margarites sordidus Hancock, 22; 23. 



Margarites ecarinatus Dall, 22. 



Machceroplax varicosus Mighels, 23. 



Amicula vestita Sowerby, 22. 



