32 U.S. NATIONAL MUSEUM BULLETIN 287 



aragonia, Tellina 1909, USGSPP 59, pp. 18, 124, pi. 14, fig. 3 



(Miocene, Coos Bay, Oregon; USNM 153940). 

 araia Dall, Bartsch and Rehder, Radobornia 1938, BBPBM 153, p. 



140, pi. 37, figs. 5-8; text fig. 17 (Keokea, Hilo, Hawaii; USNM 



484183). 

 arata Dall and Bartsch, Turbonilla (Dunkeria) 1909, USNMB 68, 



p. 125, pi. 12, fig. 12 (off Santa Catalina Island, California; 



USNM 206890). 

 arbella, Elaeocytna 1919, PUSNM, vol. 56, no. 2288, p. 10, pi. 4, fig. 



3 (Scammon Lagoon, Lower California; USNM 106495). 

 arces^ Pecten (Pseudamusium) 1913, PUSNM, vol. 45, no. 2002, p. 



592 (off Santa Barbara, California; USNM 267169); 1925, 



PUSNM, vol. 66, art. 17, no. 2554, p. 24, pi. 27, fig. 4. 

 archeri Dall and Bartsch, Turbonilla (Baldra) 1904, PBSW, vol. 



17, pp. 9, 15 (Singapore; ANSP 58016). 

 Archivesica 1908, BMCZ, vol. 43, no. 6, p. 418. Type-species by 



original designation: Vesicomya gigas Dall. 

 arciformis, Malletia (Minormalletia) 1908, BMCZ, vol. 43, no. 6, 



pp. 219, 385, pi. 15, figs. 5, 6 (ALBATROSS sta. 3417, off 



Acapulco, Mexico; USNM 122926). 

 arciformis. Modiolus 1909, PUSNM, vol. 37, no. 1704, pp. 152, 258, 



pi. 28, fig. 2 (Huaquilla, Ecuador; USNM 207756). 

 arcodentiens, Pectunculus 1895, PUSNM, vol. 17, no. 1032, p. 705, 



pi. 26, fig. 6 (USFC sta. 3472, off Hawaiian Islands; USNM 



107014); 1938, Dall, Bartsch and Rehder, BBPBM 153, p. 37, pi. 



6, figs. 7-8. 

 arctica Dall and Bartsch, Odostomia (Amaura) 1909, USNMB 68, 



p. 224, pi. 28, fig. 5 (USFC sta. 3305, SW of Hagemeister Island, 



Bering Sea; USNM 168766). 

 arctica. Pandora (Kennerleyia) 1903, TWFIS, vol. 3, pt. 6, p. 1520, 



pi. 57, fig. 26 (Pleistocene, Saco, Maine; and others); 1905, 



Schuchert, Dall et al, USNMB 53, pt. 1, p. 482 (Saco, Maine; 



USNM 109290). 

 arcticus, Cadulus 1920, USGSPP 125-C, pp. 27, 30, pi. 5, fig. 8 



(Pliocene, Carter Creek, Camden Bay region, Arctic coast 



[Alaska] ; USNM 324322). 

 Arctomelon 1915, USNMB 90, p. 57. Type-species by original 



designation: Voluta stearnsii Dall. 

 Arctonchis 1905, HAE, vol. 13, p. 112. Type-species by original 



designation: Onchidella borealis Dall. 

 Arctoscala 1908, N, vol. 22, no. 8, p. 80. Type-species by original 



designation: Arctoscala greenlandica Perry. 1909, USGSPP 59, 



p. 53. 



