18 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 23 



Propeamussium (Parvamussium) alaskense (Dall) 1872 



Plate 3 



Pecten (Pseudamusimn? ) Alaskensis Dall, 1871, p. 155, pi. 16, figs. 

 4a, 4b. ^'Ont lower valve. North Harbor, Unga Island [Shumagin 

 Islands, Alaska], six fathoms, mud, Dall, 1865; one larger living 

 specimen, exactly agreeing, Port Etches, Chugach Gulf, Dr. Minor, 

 U.S. Rev. steamer Wyanda. [Port Etches specimen labelled "Type" 

 (by Dall), fide Rehder {in Hit.), 1955.] 



Amusium (Propeamustmn) Alaskensis Dall, 1886, p. 215, pi. 5, figs. 

 7, 7a. "Only on the Alaskan coast," 



[raora] Pecten alaskensis Dall. Whiteaves, 1887, p. 119. [= P. van- 

 couverensis Whiteaves, fide Whiteaves, 1893, p. 134.] 



Pecten alaskensis Dall. Kobelt, 1888, p. 245, pi. 64, figs. 7, 8. Alaska. 



Propeamusium Alaskensis Dall. Verrill, 1897, p. 65. Alaska. 



Pecten (Propeamusium) alaskensis Dall, 1898, p. 711. "Pleistocene of 

 Vancouver Island, near Esquimalt, and at various points in Ala- 

 ska. Living from Bering Sea to Panama Bay, usually in deeper 

 w^ater." 



Pecten (Propeamusiu?n) riversi Arnold, 1906, p. 126, pi. 44, figs. 8, 9. 

 Pliocene: Santa Monica canyon, Los Angeles County (Rivers). 

 Pleistocene: Deadman Island, near San Pedro (Arnold). 



Pecten (Propeamusium) levis Moody, 1916, p. 56, pi. 2, figs. 2a-d. 

 Pliocene: Fourth and Broadway, Los Angeles, California. 



[won] Pecten laevis auct. (Pennant, Def ranee, Nilsson, Potiez et 

 Michaud, Montagu, Turton, Brown, Macgillivray, etc.) ; all 

 European species. 



Pecten (Propeamusium) alaskense Dall. Dall, 1921, p. 20. "Pribilofl 

 Islands, Bering Sea, and southward to the Santa Barbara Islands, 

 California. Japan." 



Pecten calamitus Hanna, 1924, p. 176. New name for P. (Prope- 

 amusium) levis Moody. 



Pecten (Propeamusium) alaskensis Dall. Oldroyd, 1924a, p. 62, pi. 12, 

 fig. 3 ; pi. 38, fig. 6. "Type locality, Pribilofif Islands, Alaska." 



Pecten intuscostatus var. multicostata Yokoyama, 1926, p. 305. Japan. 



\non\ Pecten multicostatus Reeve, 1853, sp. 173, pi. 35, fig. 173. New 

 Zealand. [= P. zelandiae Gray, 1843, p. 260.] 



Pecten intuscostatus var. saiuanensis Hertlein, 1931, p. 367. New name 

 for P. intuscostatus multicostata Yokoyama. 



