238 



HOLMES 



uropods with the ramus about equal to the stout peduncle, the two seg- 

 ments of the ramus of subequal length. Telson oblong-ovate. 



Length 6 mm. 



In this species the inner plates of the maxillipeds are broader than 

 is usual in the genus, and the palp of the first maxillae has but a single 

 joint, a feature which does not accord with the definition of the genus as 

 given originally by Dana. The other characters of this species, how- 

 ever, are so much like those of the recognized members of this genus 

 that I have assigned it to Stenotha rather than institute a new genus for 

 its reception. 



Family PARAMPHITHOID^E. 



SYMPLEUSTES GLABER (Boeck). 



Amphithopsis glaber Boeck. 



A single specimen from St. Paul, Pribilof Islands, Alaska. 



Family IPHIMEDID^E. 

 ODIUS CARINATUS (Bate). 



A single specimen was 

 collected on the island of 

 St. Paul, one of the Prib- 

 ilof Islands, in Bering Sea. 

 The telson in this speci- 

 men is a little shorter than 

 in the one figured by Sars 

 in his Crustacea of Nor- 

 way, but otherwise the 

 Alaskan form agrees very 

 closely with Sars' descrip- 

 tion and figures. There 

 can be no doubt, I believe, 

 FIG. 123. odius carinatus. of the specific identity of 



the two forms. The Pribilof specimen is here figured, so that it may be 



easily compared with specimens from other regions. 



Family GAMMARID^E. 

 GAMMARUS LOCUSTA Linnaeus. 

 A single specimen from Garforth Island, Muir Inlet, Glacier Bay. 



GAMMARUS PULEX (De Geer). 



Several specimens from fresh water on Popof Island and also from a 

 pond on the west side of Muir Glacier (Kincaid). 



