296 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVI. 



UROPTYCHUS MINUTUS, new species. 



The rostrum is long, sharp, and broad at the base ; the sides are straight. 

 The carapace is broadest near the posterior margin; the lateial mar- 

 gins are armed with six or seven spinules, and converge to a narrow 

 front. The species is 

 remarkable for the 

 large size of the hands. 

 The palm is com- 

 pressed ; th e i mm o) ) i 1 e 

 finger is longer than 

 the dactyl, which 

 closes inside of its 

 hooked apex; there 

 are several large 

 spines on the merus 

 and carpus. The pro- 

 podal joints of the am- 



FlG. 39. — UROPTYCHUS MINUTUS, 



Fig. 40.— UROPTYCHUS PRINCEPS, X 1^ 



bulatory legs have four or five long, slender spines on the lower margin. 



This is the smallest species examined. Length of carapace, 3 mm. ; 

 chelipeds, 10 mm. 



Locality. — Alhdtrosx station 2120, in 73 fathoms, oti' Trinidad, 



%?6^— Cat. No. 7833, U.S.N.M. 



UROPTYCHUS PRINCEPS, new species. 



The rostrum is long, sharp pointed, Ijroad at the base and curved 

 downward; four or five small spines lie along its margins irregularly 

 placed. The carapace is broader than long, flattened, armed on the mar- 

 gin with fine, long, slender spines. A row of spines extends across the 

 carapace a little behind the front; the row is interrupted in the middle. 

 There are numerous spinules on the carapace near the margins. 



