NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 47 



MACOMA CALCAREA Gmelin, 1792. 



Syst. Nat., vol. 7. p ; 323(5; Conch. Cab., ed. 1, vol. 6, p. 140, pi. 13, fig. 136. 

 Arctic Ocean to North Japan and to Monterey Bay, California. Circum- 

 boreal. 



MACOMA MOESTA Deshayes, 1854. 



Proc. Zool. Soc, p. 301 : Proc. I". s. Nat. Mus.. vol. 23, pi. 4, fig. 8. 

 Arctic Ocean, Bering Sea and eastward to the Shumagin Islands. Cir- 

 cumboreal. 



MACOMA NASUTA Conrad, 1837. 



Jonrn. Acad. Nat. Sci. Phila., vol. 7, p. 258; Thes. Conch., Tellina, i>. 314, pi. 



64, rig. 224. 

 Kodiak Island and Cook's Inlet, Alaska, south to Scammon Lagoon, Lower 



California. 



MACOMA INQUINATA Deshayes, 1854. 



Proc. Zool. Soc, p. 357; Conch. Icon. ; Tellina, pi. 30, rig. 104. 

 Bering Strait 0> Japan on the west and to Monterey Bay, California, on the 

 east. 



MACOMA INQUINATA ARNHEIMI Dall, 1916 



Proc. U. S. Nat. Mus., vol. 52, No. 2183, p. 414. 



Kodiak Island, Alaska, and south to San Francisco Pleistocene of San 

 Pedro. 



MACOMA BALTHICA Linnaeus, 1758. 



Syst. Nat., ed. 10, p. 077: Thes. Conch., Tellina. pi. 59, fig. 121. 

 Circumboreal. Point Barrow, Arctic Ocean to North Japan and San Diego, 

 California. 



MACOMA INFLATULA Dal!, 1897. 



Bull. Nat. Hist. Soc. Brit. Col., No. 2, p. 11, pi. 1, figs. 19, 20. 

 Arctic Ocean and south to Ballenas Lagoon, Lower California. 



MACOMA LEPTONOIDEA Dall, 1895. 



Proc. U. S. Nat. Mus.. vol. 23, pp. 308, 323. pi. 4, figs. 4, 9. 

 Santa Barbara Channel. Also Texas coast. 



MACOMA ONEILLI Dall, 1919. 



Sci. Res. Canadian Arctic Exp., vol. 8, pt. A., p. 20A, pi. 2, fig. 1. 

 Dolphin and Union Straits. Arctic Coast. 



MACOMA KELSEYI Dall, 1900. 



Trans. Wagner Inst., vol. 3, p. 1052, pi. 40, rig. 7. 

 Pleistocene, San Diego. California. Recent? * 



MACOMA QUADRANA Dall, 1916. 



Proc. T. S. Nat. Mus.. vol. 52, No. 2183, p. 414. 



Boca de Quadra, Alaska, and south to Coronado islands'. Lower California. 



MACOMA CARLOTTENSIS Whiteaves, 1880. 



Rep. Prom-ess GeoK Surv. Canada, 1879-80. p. 196 P. fig. 1. 

 Arctic Ocean to Puget Sound. 



MACOMA LIOTRICHA Dall, 1897. 



Nat. Hist. Soc. Brit. Col., Bull. No. 2, p. 12, pi. 1, fig. 21. 



Aleutian Islands and eastward to the Shumagin Islands. Alaska. 



