294 PROCEEDINGS OF THE NATIONAL MUSEUM. 



anterior branch of the cervical depression and one Ijehind the posterior 

 branch. On the carapace near the tirst spine there is a tubercle which 

 in a smaller female is replaced by a spine; in a third and much 

 smaller specimen this spine is but slightly indicated and the serrations 

 and spines are inconspicuous. 



The surface of the carapace is set with large, well-separated granules. 

 The chelipeds are long, cylindrical, and free from spines, except at 

 the articulations. The surfaces, how^ever, have the same character of 

 granulations as the carapace. The ambulatory legs are smooth: the 

 dactyls have a row of short, horny teeth, which form a comb on the 

 lower margin. 



Fig. 37. — UROPTYCHrs grantlatus, x 1. 



Length of carapace, 11 mm.; breadth between the antero -lateral 

 angles, 7 mm.; a little behind the middle, 12 mm.; at the posterior 

 margin, 10 mm.; length of chelipeds, 59 mm.; of the palm, 18 mm.; 

 of the fingers, 8 mm. 



Taken by the Albatross at station 2818 in 392 fathoms, Galapagos 

 Islands. Three females, the two largest with eggs. 



Type.— Cat No. 20567 U.S.N.M. 



UROPTYCHUS JAMAICENSIS, new species. 



The rostrum is deeply excavated on the basal half of its surface; it 

 is flat above and below. The surface of the carapace is moderately 

 swollen; the lateral margins are arcuate, ending at the anterolateral 



