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 spiuelcts on 



the posterior border ... ... ... ... JJ. australia. 



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



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



spinelet on the posterior border ... ... ... U. bacillimanHx 



49. UroptycllUS fusimamis, Alcock & Anderson. 



Uroptychus fuiimanun, Alcock and Anderson, Ann. Mag. Nat. Hist., Jan. 1899, p. 2f>. 

 ILLUSTRATIONS OF THK ZOOLOGY OK THE INVKSTIGATOR, CKOSTACEA, PLATK XLIV. Fio. 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. Eye of 

 good size and well pigmented. 



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



o . 



Chelipeds in both sexes equal, about lj- 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 ; 

 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 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. 



j -VT 2339-2345 /m F ,1 \ 



Regd. Nos. jo (Types of the species). 

 50. Uroptychus nigricapillis, 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 



