222 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 23 



PLATE 23 



Fig. 1. Chlamys islandica albida (Dall in Arnold), 1906. Paratype. 

 Albatross station 3 322, off Markoffski Bay, Alaska, in 35 

 fathoms. Height: 46 mm; length: 41 mm. (Grau collection.) 

 P. 



Fig. 2. Chlamys islandica behringiana (Middendorff), 1849. St. 

 Paul Island, Pribilof Islands, Bering Sea. Height: 58 mm; 

 length: 53 mm. (U.S. National Museum collection, no. 

 271731. Photograph by F. B. Kestner, U.S.N.M.) P. 



