12 A -Canadian Arctic Expedition, 1913-18 



List of Species collected East of the Delta of the Mackenzie Riveb 

 AT Cape Bathuest and Eastward. 



Leda (Portlandia) arctica Gray, 43b. 



Ledd pernula Miiller, 43a, 436. 



Area glacialis Gray, 43a, 436. 



Pseudamusium andersoni Dall, 43a. 



MytUus edulis Linn6, 37i, p. 38, Uh, 47a, 476, 47c, 50/. 



Musculus Icevigatus Gray, 35, 37a, 376, 41, 41c, 43a, 436, 43c, 47c. 



Musculus niger Gray, 37i, p. 41c, 49r. 



Musculus corrugatus Stimpson, 41c, 43a. 



Musculus vernicosus Middendorff, 43a. 



Lyonsia arenosa Moller, 436. 



Astarte borealis, Schumacher, 35, 37i, p. 41c, 43c, 476, 47c, 50/, 53c. 



Astarte vernicosa Dall, 43c, 41c. 



Astarte fabula Reeve. 



Cardium ciliatum Fabricius, 37i, p, f, 43c. 



Serripes gronlandicus Gmehn, 35, 37i, p, 41, 41c, 47c, 49r, 53c. , 



Pisidium rotundatum Prime, Freshwater ponds near Bernard harbour; 



also in stomachs of eider duck and trout. 

 Liocyma beckii Dall, 37i, p. 

 Liocyma viridis Dall, 41c, 43c. 

 Thyasira flexuosa Forbes and Hanley, 43o. 

 Macoma calcarea Gmelin, 35, 43, 53c. 

 Macoma oneilli Dall, 43a, 436. 

 Mya truncata Linn6, 37i, p, 41c, 43c, 47c. 

 Mya intermedia Dall, 43a. 



Saxicava arctica Linne, 35, 37a, 37i, p, 43c, 44/i, 50a. 

 Saxicava pholadis Linne, 37i, 40a. 

 Cyrtodaria kurriana Dunker, 35, 376, 37t. 

 Lamellidoris of. liturata Beck, 436. 

 Philine finmarchica M. Sars, 41, 43a. 

 Utriculus semen Reeve, 42w, 41m, (fragm.), 48a. 

 Cylichna alba Brown, 41c, 42d. 

 Cylichna nucleola Reeve, 40m, 42d (fragm.), 41. 

 Aplexa hypnorum Linn6. Generally, in fresh water. 

 Physa jennessi Dall. Ponds east of Bernard harbour. 

 Agriolimax hyperboreus Westerlund, Bernard harbour. 

 Lymncea palustris variety vahli Beck, Victoria island and Bernard 



harbour. 

 Lora exarata Moller, 41c. 

 Lor a beckii Moller, 41c. 

 Admete couthouyi Jay, 43a. 

 ■Chrysodomus solutus Herrman, 37t, p, 47c. 

 Plicifusus kroyeri Moller, Zli. 

 Pyrulofusus deformis Gray, 39. 

 Volutopsius sp. (fragments), 37i, 40a. 

 Beringius sp. (ovicapsule), 371, 40a. 

 Ancistrolepis magnus Dall, 37t, 40a. 

 Buccihum angulosum Gray, 37?;, 41, 43c. 

 Buccinum normale Dall, 41. 

 Buccinum plectrum Stimpson, 37i. 

 Buccinum polare Gray, 37i, 43c. 

 Buccinum ciliatum Fabricius, 37i, 40a. 

 Buccinum cyaneum Brugui^re, 37i, 41, 41A, 43c, 49r. 

 Tachyrhynchus erosus Couthouy, 43a, 436, 43c. 

 Neptunea clathrdta L., 43c. 



