150 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 23 



Pecten (Vola) dentatus Sowerby. Kobelt, 1888, p. 155, pi. 44, figs. 1, 

 2. "an Westcolumbien, bei Santa Elena von Cuming , . ." \^non P. 

 dentatus J. de C. Sowerby.] 



Pecten dentatus Sowerby. Verrill, 1897, p. 57. "Pacific coast of Amer- 

 ica, from the Gulf of California to South America, [non P. denta- 

 tus J. de C. Sowerby.] 



Pecten (Pecten) dentatus Sowerby. Arnold, 1903, p. 104, pi. 12, figs. 1, 

 la. Pliocene: San Diego. Pleistocene: Santa Barbara to San Diego. 

 Living: Gulf of California. \non P. dentatus J. de C. Sowerby.] 



Pecten (Pecten) vogdesi Arnold, 1906, p. 100, pi. 33, figs. 1, la; pi. 

 34, fig. 1. San Pedro formation (Pleistocene), San Pedro, Cali- 

 fornia. 



[non] Pecten (Pecten) excavatus Anton. Arnold, 1906, p. 134, pi. 46, 

 figs. 1, la, lb. Gulf of California. ". . . erroneously reported from 

 China." [Arnold mistaken ; = P. vogdesi Arnold. P. excavatus 

 Anton restricted to south and central China, Formosa, R^oikyu 

 Islands and southern Japan; P. sinensis Sowerby, 1842 (p. 48, pi. 



16, figs. 120, 121, 134) is a synonym.] 



Pecten dentatus Sowerby. Dall, 1909, p. 255. Santa Elena, Ecuador, to 



Paita, Peru, [non P. dentatus J. de C. Sowerby.] 

 Pecten (J antra) dentatus Sowerby. Lamy, 1909, p. 213. "Basse Cali- 



fornie." [non P. dentatus J. de C. Sowerby.] 

 Pecten dentatus Sowerby. Dall, 1909, p. 255. Santa Elena, Ecuador, to 



Paita, Peru, [non P. dentatus J. Sowerby.] 

 Pecten (Euvola) cataractes Dall, 1914, p. 121. New name for P. denta- 

 tus G. B. Sowerby, non P. dentatus J. Sowerby. Gulf of California. 

 Pecten (Pecten) heimi Hertlein, 1925, p. 9, pi. 1, fig. 3; pi. 3, fig. 3. 



"southern part of Arroyo San Gregorio, Lower California; . . . 



Lower Pliocene?" 

 Pecten (Janira) vogdesi Arnold. Grant & Gale, 1931, p. 228, pi. 3, figs. 



3a, 3b. Pliocene of California. Pleistocene of California and Lower 



California. Living: Gulf of California. 

 Pecten excavatus Turton [lapsus calami; Anton] (P. dentatus Shy.). 



Pilsbry & Lowe, 1933, p. 139. 

 Pecten (Pecten) vogdesi Arnold. Hertlein, 1935, p. 304, pi. 19, figs. 16, 



17. "Magdalena Bay, Lower California; Gulf of California and 

 south to Paita, Peru. Pliocene and Pleistocene of California and 

 Lower California." 



Holotype: British Museum. 



Type locality : Santa Elena, Ecuador. 



