164 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
CRYPTONATICA AFFINIS Gmelin. 1792. 
Syst Nat, vol. 7, p. 3675. — Sabs, Moll. Reg. Arct. Norv., pi. 21, fig. 14. 
Arctic Ocean north of Bering Strait. Also Greenland. 
CRYPTONATICA JANTHOSTOMA Deshayes, 1841. (Plate 11, fig. 12.) 
Guerin, Mag. de Zool., Moll., pi. 45. 
CoEQ’mander Islands, Bering Sea; Kamchatka 'and south to Japan. 
CRYPTONATICA ALEUTICA Dali, 1919. (Plate 14, fig. 10.) 
Proc. U. S. Nat. Mus., vol. 56, p. 352; Proc. Biol. Soc. Wash., vol. 32. p. 251. 
North end of Nunivak Island, Bering Sea ; south on the west from Kam- 
chatka to Japan ; on the east to the Aleutian chain and Puget Sound. 
CRYPTONATICA SALIMBA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 351. 
Off Esteros Bay, California, and south to the Gulf of California, in deep 
water. 
Genus POLINICES Montfort, 1810. 
Subgenus Euspira Agassiz, 1842. 
EUSPIRA PALLIDA Broderip and Sowerby, 1829. (Plate 14, fig. 5.) 
Zool. Journ., vol. 5, pt. 4, p. 372. — Tryon, Man., vol. 8, pi. 14, fig. 26. 
Arctic Ocean at Point Barrow and southward on the east to Forrester 
Island, Alaska. On the west at the island of Kolguief in the Polar Sea 
and in the Okhotsk Sea (Middendorff). 
EUSPIRA GRONLANDICA (Beck) Holler, 1842. 
Ind. Moll. Gronl., p. 7. — Sars, Moll. Reg. Arct. Norv., pi. 21, fig. 15. 
xArctic Seas southward in gradually deeper water to Monterey, California. 
Also Greenland. 
EUSPIRA ACOSMITA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 352. YYi^rnXiAju^ , (^a'f 
San Clemente Island, California, to the Coronado Islands, in deep water. 
EUSPIRA MONTERONA Dali, 1919. 
. Proc. U. S. Nat. Mus., vol. 56, p. 352. 
Arctic Ocean, Bering Sea, and the Aleutians. 
EUSPIRA ALGIDA Gould, 1848? 
Proc. Boston Soc. Nat. Hist., vol. 3, p. 73 ; Rep. U. S. Expl. Exp., Moll., fig. 
256. 
Coal Harbor, Shumagin Islands, Alaska to Puget Sound. “ Rio Negro ” 
(Gould). 
EUSPIRA POLITIANA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 353. 
Petrel Bank, Bering Sea. 
EUSPIRA CAURINA Gould, 1847. 
Proc. Boston Soc. Nat. Hist., vol. 2, p. 239; Rep. U. S. Expl. Exp., Moll., 
fig. 254. 
Norton Sound, Alaska, to Puget Sound, and in deep water (822 fathoms) 
to San Diego, California. 
