CALIFORNIA STALK-EYED CRUSTACEA. 115 



Hapalogaster Mertensii Brandt. 



Hapalogaster Mertensii Brandt, Melanges biologiques, Tome I, 1850, p. 

 58. Stimpson, Jouru. Bost. Soc. Nat. Hist, Vol. VI, 1857, p. 480. 

 ScHALFEEW, Melaiig. bioL, Tome XIII, 1892, p. 327, figs. 4 and 5a, 

 du Bull. Acad. imp. sci. St. Pelersb., Tome XXXV, 1892, p. 333. 

 Newcombe, Bull. Nat. Hist. Soc. Brit. Col., 1893, p. 28. Bouvier, 

 Ann. Sci. Nat. (8), Tome I, 189(3, p. 4 et seq. 



Carapace with scattered tnfts of setae on the upper surface. Kostrum 

 acuminate, longer than in cavicauda. A large, sharp spine at the outer 

 orbital angle, and a smaller sharp spine on the superior orbital margin, 

 separated from the last by an incision. No marginal spines in front of the 

 cervical groove, but behind it there are five slender spines which decrease 

 in size posteriorly. Merus of the large cheliped armed in front with a pair 

 of large spines having a small spine on either side; carpus armed with 

 several spines subserially arranged; hand narrow, with three rows of 

 large spines on the outer surface and a row of smaller spines on the upper 

 edge; in the smaller hand there are four spines on the outer border, three 

 on the inner edge, a row of three spines on the upper surface near the 

 inner side, and a single spine between this row and the outer edge near the 

 gap between the fingers. Ambulatory legs armed with sharp spines on 

 the anterior margin. 



Described from five specimens in the National 

 Museum from Kadiak, Alaska (No. 19471), collected by 

 W. J. Fisher. 



Sitka (Brandt); Kadiak (Schalfeew) ! British Columbia 

 (Bouvier); near Victoria (Newcombe). 



Hapalogaster Grebnitzkii Schalfeeiu. 



Hapalogaster Grebnitzkii Schaleeew, Melang. biol.. Tome XIII, 1892, p. 

 329, figs. 3a and 3b, du Bull. Acad. imp. sci. St. Petersb., Tome 

 XXXV, 1892, p. 335. Bouvier, Ann. Sci. nat. (8), Tome I, 1896, p. 4 

 et seq. 



Closely allied to Mertensii. Carapace devoid of prominent tufts of 

 setae. Kostrum prominent, acuminate; a large spine at the outer orbital 

 angle and a sharp spine on the superior orbital margin which is relatively 

 larger than the corresponding spine in the preceding species. Margin of 

 the carapace behind the cervical groove armed with five spines, which 

 decrease in size posteriorly. Legs armed with setose spines. The merus 

 of the large cheliped is similar to that of Mertensii, but the carpus has 



