DECAPODS 163 



Distribution. From Atka, Aleutians, eastward and southward to 

 Puget Sound; to a depth of 19 fathoms. 



HAPALOGASTER GREBNITZKII Schalfeew. 



Harriman Expedition. Dutch Harbor, Unalaska (W. R. Coe) ; Popof 

 Island ; Orca (T. Kincaid) ; Sitka (W. R. Coe), extending the known 

 range. 



Distribution. From Bering Sea off the Pribilofs and Cape Newenham 

 southward along the Aleutian Islands to Sitka, Alaska ; Bering Island. 



Genus Dermaturus Brandt. 

 DERMATURUS MANDTII Brandt. 



Harriman Expedition. Dutch Harbor, Unalaska ; Popof Island ; Sitka. 

 Distribution. Pribilof Islands; Aleutian Islands and Alaska Peninsula 

 to Sitka ; Bering Island ; 6 to 40 fathoms. 



Genus (Edignathus Benedict. 

 CEDIGNATHUS INERMIS (Stimpson). 



Hapalogaster inermis STIMPSON, Ann. Lye. Nat. Hist. N. Y., vn, 243, 1860. 

 Hapaloga ster Brandti SCHALFEEW, Mel. biol., xill, 330, 1892, figs, i and 5b, 



of the Bull. Acad. imp. sci. St. Petersbourg, xxxv, 336, 1892. 

 (Edignathus gilli BENEDICT, Proc. U. S. Nat. Mus., xvil, 487, 1 894. 

 (Edignathus inermis HOLMES, Occas. Papers Calif. Acad. Sci., VII, 119, 1900, 



and synonymy. 

 (Edignathus Brandti HOLMES, op. cit., 118, and synonymy. 



I think there is little doubt that Schalfeew's species is identical with 

 Stimpson's. That the number of squamse on the carapace is variable 

 is evidenced in the small series I have examined. Stimpson's type was 

 smaller than any examples in the National Museum. 



Distribution. Unalaska to Pacific Grove, California. 



Genus Acantholithodes Holmes. 

 ACANTHOLITHODES HISPIDUS (Stimpson). 



Distribution. Vancouver Island, British Columbia, to Monterey, Cali- 

 fornia. To a depth of at least 16 fathoms. 



Genus Placetron Schalfeew. 



PLACETRON WOSNESSENSKII Schalfeew. 



Plate vi, fig. i. 



Placetron Wosnessenskii SCHALFEEW, Mel. biol., xin, 333, 1892, fig. 6, of the 



Bull. Acad. imp. sci. St. Petersbourg, xxxv, 339, 1892. 

 Lepeopus forcipatus BENEDICT, Proc. U. S. Nat. Mus., xvil, 488, 1894. 



