CRUSTACEA NORTH PACIFIC EXPLORIN'G EXPEDITIOX 1 5 



extremities. There are three spines on the median line, two of 

 which are on the gastric region, and one, the largest of all, on the 

 cardiac. A large spine on each side on the branchial region, between 

 which and the postorbital tooth, on the lateral margin, there are 

 nine spines, irregular in size and distance. Posterior margin spin- 

 ulose, three or four spines near the middle being larger than the 

 others. Rostrum inclined at an angle of 45°, and bent at its extrem- 

 ity into the vertical plane ; it is dilated at the extremity, the corners 

 being broadly rounded and minutely crenulated ; at the middle there 

 are two diverging teeth. Ocular peduncles rather short, in length 

 little more than twice their diameter. Orbit with two fissures above, 

 the inner one closed, the outer open, separating the postorbital tooth. 

 The pterygostomian regions are full convex, tuberculated, and not 

 setose. The third joint of the outer maxillipeds is greatly expanded 

 at its antero-exterior angle; the second joint is marked with a longi- 

 tudinal furrow near its outer margin. The basal joint of the outer 

 antennas is very broad; its anterior tooth short, with nearly smooth 

 margin ; second joint oblong, compressed, with the margin ciliated 

 with long hairs. Chelopoda equaling the carapax in length, smooth 

 and glossy, fawn-colored, with white bases ; carpus and hand minutely 

 and obsoletely granulated ; fingers with black tips. Ambulatory feet 

 compressed, thickly hairy ; the meros with a small terminal spine 

 above. Color of the body pale reddish, rendered indistinct by an 

 accumulation of sordes retained by the setae. Dimensions : Length 

 ■of the carapax, 0.75 ; greatest breadth, 0.59 ; distance between tips of 

 postorbital teeth, 0.45 ; length of first pair of ambulatory feet, 0.86 

 inch. 



Specimens of this species w'ere dredged on a muddy bottom in six 

 fathoms, in the harbor of Sidney, or Port Jackson, Australia. 



12. MICIPPA HIRTIPES^ Dana 



Micippa hirtipes Dana, U. S. Exploring Expedition, Crust., i, 90, pi. i, 

 fig- 4- 



The following description is drawn up from specimens preserved 

 in spirits ; it may be useful, as Dana's specimens were dried. The 

 "body is moderately depressed; carapax minutely and somewhat un- 

 ■equally tuberculated above, without spines, except a small one at the 

 branchial region on each side, and a marginal one in front of this ; 

 these are continuous with the series of teeth on the antero-lateral 

 margin. The posterior margin is denticulated with granular tuber- 



^ Micippa philyra (Herbst). 



