NO. 1876. ON THE CRUSTACEAN ORDER CUMACEA—CALMAN. 643 



Port Levashef, Unalaska; 20-30 fathoms; W. H. Dall; U.S.N.M. 

 44026; 1 female. 



Eider village anchorage, Captains Bay, Unalaska; W. H. Dall, 

 1873; U.S.N.M. 13372; 8, male and female. 



Ridge, Port Levashef, Unalaska; W. H. DaU, 1880; U.S.N.M. 

 13365; about 12 females. 



Off Round Island, Coal Harbor, Unga; 8-9 fathoms; sand, stones; 

 W. G. Hall; Dall's collection; U.S.N.M. 44024; 1 female. 



Coal Harbor, Unga Island, Alaska; 8-9 fathoms; sand, stones; 

 W. G. Hall, 1872; Dall's collection; U.S.N.M. 13371; 2 females. 



Popof Strait, Alaska, near reef; 5-7 fathoms; sand; W. H. Dall, 

 1872; U.S.N.M. 13370; 1 male, 2 females. 



Chignik Bay; 7-18 fathoms; sand; W. H. Dall; U.S.N.M. 44027; 

 8 females. 



Chiniak Bay, Kodiak, Alaska; W. H. Dall, July, 1880; U.S.N.M. 

 13378; 5, female and A^oung male. 



Shahafka Cove, Kodiak, Alaska; 12-14 fathoms; nmd, sand; W. 

 H. Dall; U.S.N.M. 14277; 1 female. 



Fig. 57. — DiASTYLTS alaskensis, male, from the side. 



Shahafka Cove, Kodiak, Alaska; 12-14 fathoms; W. H. Dall, 

 July, 1880; U.S.N.M. 13377; about 25, male and female. 



Old Harbor, Kodiak; Albatross, August 11, 1888; U.S.N.M. 44023; 

 2 females. 



Albatross station 4272; Afognak Island; 17-12 fathoms; bottom 

 temperature, 54° F.; U.S.N.M. 44022; 3 females. 



Chugacliik Bay, Cooks Inlet, Alaska; 20-60 fathoms; sandy mud 

 W. II. Dall, June, 1880; U.S.N.M. 13376; 4 females. 



Chiachi Islands, Alaska; 20 fathoms; mud; W. H. Dall, 1874 

 U.S.N.M. 13374; 1 female. 



Chiachi Islands; 20 fathoms; mud; W. H. Dall; U.S.N.M. 44025 

 1 female. 



DIASTYLIS PLANIFRONS, new species. 



Ovigerous female. — Total length, 14 mm. 



Carapace inflated, its greatest height nearly tyvo-thirds and its 

 greatest width three-fourths of its length. A prominent, very 

 oblique ridge on each side dies away on tlie side of the pseudorostrum; 

 at about one-third of its length from the front it is joined by a curved 



