Mollusks .9 A 



STATION 24. 



Sandspit at point Barrow, Alaskan Arctic coast. 



Mytilus edulis L. 



Musculus niger Gray. 



Musculus laevigatus Gray. 



Serripes gronlandicus Gmel. 



Astarte borealis Schum. 



Macoma calcarea Gmelin. 



Liocyma beckii Dall. 



Saxicava arctica L. 



My a truncata L. 



Mya truncata var. uddevallensis Forbes. 



My a intermedia Dall. 



Zirfcea gabbi Try on. 



Chrysodomus solutus Herrman. 



Chrysodomus saturus Martyn. 



Plicifusus johanseni Dall. 



Volutopsius stefanssoni Dall. 



Buccinum nor male Dall. 



Buccinum angulosum (Gray) subcostatum Dall. 



Buccinum angulosum Gray (s. s.). 



Buccinum plectrum Stm. 



Buccinum polar e Gray. 



Buccinum cyaneum Hancock. 



Buccinum glaciate Phipps. 



Boreoscala greenlandica (Perry). 



Velutina zonata Gould. 



"Velutina" spongiophila Midd. (Hydroid). 



Piliscus commodus Midd. 



Natica clausa Brod. & Sby. 



Euspira pallida Brod. & Sby. 



Amauropsis purpurea Dall. 



Buccinum, Chrysodomus, etc., (ovicapsules) . 



STATION 26. 



Spy island, Alaskan Arctic Coast, beach. 



\ 



Astarte borealis Schum. 

 Cyrtodaria kurriana Dunker. 



STATION 2Si. 



Hot Spring creek, Sadlerochit river, inland from Camden bay, Alaskan Arctic 



coast. 



Lymnea caper ata Say, dwarfed. 

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