283 



III. No spines on dorsum of carapace: chelipeds non-spinose : — 



1. Major diameter of eye about a third the length of the rostrum: 



propodites of 2nd, 3rd and 4th legs with numerous spinelets on 



the posterior border ... ... ... ••• #"• austrahs. 



2. Major diameter of eye about a fifth the length of the rostrum: 



propodites of 2nd, 3rd and 4th legs with a single (terminal) 



spinelet on the posterior border ... ... ... U- bacilUmanus 



49. UroptycllUS fusimailUS, Alcock & Anderson. 



Uroptychus fusimanus, Alcock and Anderson, Ann. Mag. Nat. Hist., Jan. 1899, p. 26. 

 Illustrations of the Zoology of the Investigator, Crustacea, Plate XLIV. Fig. 4. 



Dorsal surface of carapace studded with numerous spines in more or less 

 distinct rows, the well-defined cristiform 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, forming a distinct orbital notch. Bye of 

 good size and well pigmented. 



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



Chelipeds in both sexes equal, about if times the length of the fully ex- 

 tended body, much stouter and rather more than one-third of their extent longer 

 than the legs, subcylindrical as far as the compressed and broadened hands ; 

 alono- 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 have the posterior border 

 finely toothed in the distal two-thirds : an acicular spine is found at the end of 

 the posterior border of the propodite. 



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 cheli- 

 peds 42 millim. 



Regd. Nos. ^Ji- 5 (Types of the species). 



50. Uroptychus nigricaplllis, n. sp. Plate III. fig. 3. 



Carapace smooth except for a pair of largish spines on the gastric region 

 on either side and behind the base of the rostrum. The antero-lateral angles 



