NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 153 
Section AIi€tAi U ) D A l tol l, a 91-8 . 
LITTORINA SQUALIDA Broderip and Sowerby, 1829. 
Zool. Journ., vol. 4, p. 370; Zool. Beechey’s Voy., p. 139, pi. 34, fig. 12. — 
Middendoeff, Beitr. Mai. Rossica, vol. 2, p. 57 ; Sibirisclie Reise, pi. 11, 
figs, lr-10. 
Cape York, Arctic Ocean, to Pribilof Islands and the Okhotsk Sea. 
Section LITTORIVAGA Dali, 1918. 
1.ITTOKINA SIT^^ANA Philippi, 1845. 
Proc. Zool.^ Soc., p. 140. — Teyon, Man., vol. 9, p. 240, pi. 41, fig. 90. 
Southern Bering Sea, both coasts, and southward on the east to Puget 
Sound. 
LITTORINA ATKANA Dali, 1886. 
Proc. U. S. Nat. Mus., vol. 9, p. 211 ; vol. 24, pi. 39, fig. 11. 
Kyska Island, Alaska, and eastward to Cook’s Inlet. 
LITTORINA ALEUTICA Dali, 1872. 
Proc. Cal. Acad. Sci., vol. 4, p. 271, pi. 1, fig. 3; Proc. IT. S. Nat. Mus., vol. 
24, pi. 39, figs. 4, 6. 
Pribilof Islands and the Aleutians from Kyska eastward to the Chika 
Islands, on isolated islets. 
LITTORINA GRONLANDICA Menke, 1830. 
Synopsis, p. 45. — Teyon, Man., vol. 9, pi. 41, fig. 7. 
The Okhotsk and Bering seacoasts and eastward to Sitka, Alaska ; Puget 
Sound? Also Greenland. 
LITORINA RUDIS Donovan, 1800. 
^ British Shells, vol. 1, pi. 33, fig. 3. 
Aleutian Islands to Puget Sound. Also Atlantic. 
LITORINA PLANAXIS Philippi, 1847. 
'^Abb. u. Beschr., Littorina, pi. 4, fig. 16. 
From Puget Sound south to Magdalena Bay, Guadelupe and Socorro Islands. 
Subgenus Melakhaphe (Muhlfeldt) Menke, 1828. 
MELARHAPHE SCUTULATA Gould, 1849. 
Proc. Boston Soc., Nat. Hist., vol. 3, p. 83. — Teyon, Man., vol. 9, pi. 45, figs. 
98-100 ; 1-3. 
Kodiak Island, Alaska, south to Turtle Bay, Lower California, and Socorro 
Island. 
Subgenus Algamoeda Dali, 1918. 
ALGAMORDA NEWCOMBIANA Hemphill, 1876. (Plate 5, fig. 5.) 
Proc. Cal. Acad. Sci., vol. 7, p. 49; Cat. N. Amer. Shells, p. 6, No. 537. 
Humboldt Bay, California. 
? ALGAMORDA SUBROTUNDATA Carpenter, 186^. 
Ann. Mag. Nat. Hist., ser. 3, vol. 14, p.^28. 
Neah Bay, Washington. 
? ALGAMORDA CASTANEA Carpenter, 186.'?. 
Ann. Mag. Nat. Hist, ser. 3, vol. 14, p. 28. I 
Neah Bay, Washington. 
