COMPLETE GRAU : PECTINIDAE OF THE EASTERN PACIFIC 97 



purpurata (Lamarck) 



(Corinto, Nicaragua to Coquimbo Province, Chile) 



Ghlamys (Argopecten) circularis (Sowerby) 1835 



Plate 32 



Pecten tumidus Sowerby, 1835, p. 109. "Hab. ad Sanctam Elenam et 

 ad Salango, Columbiae Occidentalis." [Santa Elena and Salango, 

 Ecuador.] 

 \non\ Ostrea tumidus Turton, 1819, p. 132. [= Pecten similis Laskey, 

 1811, p. 387, pi. 8, fig. 8. Western Atlantic, from Norway to west 

 Africa; Mediterranean.] 



[non] Pecten tumidus Hartmann in von Zieten, 1833. p. 68. [Fossil; 

 Germany.] 



Pecten circularis Sowerby, 1835, p. 110. "Hab. ad Sinum Californiae. 

 (Guaymas). Found in sandy mud at a depth of seven fathoms." — 

 Sowerby, 1842, p. 51, pi. 12, fig. 23. "California and St. Vincent's." 

 [St. Vincent (Windward Islands, West Indies) record erroneous; 

 undoubtedly based on specimens of Chlamys (Argopecten) gibba 

 (Linne).] 



[non] Pecten circularis Goldfuss, 1836, p. 76, pi. 99, figs. 10a, 10b. 

 "Ex arena viridi Westphaliae." [Cretaceous of Westphalia, Ger- 

 many.] 



Pecten ventricosus Sowerby, 1842, p. 51, pi. 12, figs. 18, 19, 26. "St. 

 Elena [Ecuador] ; and young specimens brought from Calapan, 

 Philippines, by Mr. Cuming." New name for P. tumidus Sowerby. 

 [Philippines record erroneous.] 



[?] Pecten pomatia Valenciennes, 1846, pi. 19, fig. 3. [Carpenter 

 (1864, p. 528) : "may be = P. ventricosus, jun."] 



Pecten inca d' Orbigny, 1846, p. 663. New name for P. tumidus Sower- 

 by. 



Pecten ventricosus Sowerby. Kiister, 1859, p. 100, pi. 28, figs. 1, 2. 

 Fig. 3 incorrectly referred to P. ventricosus in text, but in plate 

 index correctly referred to P. gibbus (Linne). "West-Columbia." 

 [Ecuador.] 



Pecten (Argus) ventricosus Sow. Morch, 1861, p. 210. "Puntarenas 

 [Costa Rica] . . . Bocorones [Boquerones, Nicaragua] . . . Realejo 

 [EI Realejo, Costa Rica]." [Also listed: "Var. coccinea; valva 

 dextra lituris atris, intus alba. Sow. thes. f. 26. — Puntarenas . . . 

 Var. maculis albis, violaceis et nigris. . . ." For status of Argus 

 see Gray (1851) reference under Chlamys islandica (Miiller), this 

 paper.] 



