2G On Indian Deep-sea Crustacea. 



320 fathoms. The last when fully extended measures 

 29 millim. from tip of rostrum to end of telson. 



This species is readily distinguished from Uroptychus 

 nitidus, of which undoubted specimens have been dredged by 

 the ' Investigator/ in the form of the chelipeds, the smaller 

 eyes, and the pitted carapace. 



Uroptychus f us imanus, sp. n. 



Dorsal surface of carapace studded with numerous spines 

 in more or less distinct rows, the well-defined cariniform 

 lateral borders acutely spinate. Abdomen perfectly smooth. 



Carapace (without rostrum) slightly longer than broad ; 

 cervical suture very well defined ; rostrum acutely triangular, 

 simple, the frontal margin on either side of it deeply concave 

 for the eye. 



Antennal acicle large, reaching as far as the tip of the 

 peduncle. 



Chelipeds in both sexes equal, about 1§ times the length 

 of the fully extended body, much stouter and rather more 

 than one third of their extent longer than the legs, sub- 

 cylindrical as far as the compressed and broadened hands ; 

 along the upper and inner surfaces of the arm and wrist are 

 longitudinal rows of spines, those in at least two rows being 

 conspicuously enlarged and sharply raised ; hands smooth, 

 broadened, the edges of the palm almost cristiform. 



First three pair of legs slender, smooth, the meropodites 

 somewhat dilated, the third pair about a dactylus shorter than 

 the other two ; the dactyli are less than a third the length of 

 their propodites, and they alone have the posterior border 

 finely toothed in the distal two thirds. 



Seven specimens (one an egg-laden female), from off the 

 Travancore coast, 430 fathoms. 



The fully extended body of the largest female measures 

 31 millim. and the chelipeds 53 millim. ; that of the largest 

 male measures 27 millim. and the chelipeds 42 millim. 



Uroptychus cavirostris, sp. n. 



Dorsal surface of carapace perfectly smooth ; two sharp 

 spines (including the one at the antero-lateral angle) on either 

 lateral border. Abdomen perfectly smooth. 



Carapace (without rostrum) longer than broad ; cervical 

 groove not well defined, branchial regions well defined by 

 swelling. Rostrum simple, acute, broadly triangular, doisally 

 concave. A minute spinule at the outer angle of the orbit. 



