NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 151 
Genus ALETES Carpenter, 1857. 
ALETES SQUAMIGERUS Carpenter, 1856. 
Proc. Zool. Soc., p. 226. — Tryon, Man., pi. 54, figs. 73, 74. 
Monterey, California, to Payta, Peru, and the Galapagos Islands. 
ALETES CENTIQUADRUS Valenciennes, 1846. 
Voy. Venus, Atlas, pi. 11, fig. la. 
San Diego, California, to Panama. 
Genus VERMICULUM Montagu, 1803. 
VERMICULUM ANELLUM Morch, 1861. 
Proc. Zool. Soc., p. 359. — Tryon, Man., vol. 8, pi. 49, fig. 34. 
Monterey, California, to Todos Santos Bay, Lower California. 
Genus SPIROGLYPHUS Daudin, 1800. 
SPIROGLYPHUS LITUELLUS Morch, 1861. 
Proc. Zool. Soc., p. 154. — Tryon, Man., vol. 8, pi. 54, fig. 82. 
Forrester Island, Alaska, to San Diego, California, ^ 
Genus PETALOCONCHUS Lea, 1843. 
PETALOCONCHUS MACROPHRAGMA Carpenter, 1857. 
Mazatlan Cat., p. 309. — Tryon, Man., vol. 8, pi. 48, fig. 16. 
San Diego, California, to Panama. 
PETALOCONCHUS MONTEREYENSIS Dali, 1919. 
Proc. Biol. Soc. Wash., vol. 32, p. 250. 
Monterey, California. <PacI.^£7. 
PETALOCONCHUS COMPLICATUS Dali, 1908. 
Bull. Mus. Comp. Zool., vol. 43, p. 326. 
Puget Sound to Panama. 
> Genus THYLACODES Guettard, 1774. 
THYLACODES ERUCIFORMIS Morch, 186^. 2. 
Proc. Zool. Soc., p. 70. ^ , 
“California” (Morch). 
Family TURRITELLIDAE. 
Genus TURRITELLA Lamarck, 1799. 
TURRITELLA NODULOSA King, 1831. 
Zool. Journ., vol. 5, p. 347. — Tryon, Man., vol. 8, pi. 63, figs. 78, 79. 
San Diego, California, to Panama. 
TURRITELLA MARIANA Dali, 1908. 
Bull. Mus. Comp. Zool., vol. 43, No. 6, p. 327, pi. 11, fig. 14. 
Catalina Island, California, to Panama Bay. 
TURRITELLA JEWETTIl Carpenter, 1864. 
Suppl. Rep. Brit. Assoc., p. 655 ; Ann. Mag. Nat. Hist., ser. 3, vol. 17, p. 276. 
Santa Barbara, California, to Salina Cruz, Mexico. Also Pleistocene. 
