( ^1 ) 



Length of carapace about 12 millim. Inhabits all sorts of broad-mouthed 

 shells, often encrusted with sea-anemones. Distribution : East coast of Indian 

 Peninsula. 



3150 



— — Sandheads, R. Hooghly A. J. Milner (12). 



7. Diogenes rectimanus, Miers. Plate VI., tig. 8, 



Diogenes rectimanus, Miers, Zool. H. M. S. Alert, p. 262, pi. xxvii., fig. c : Henderson, 

 Tr. Linn Soc, Zool., (2) V. 1893, p. 419: Lanchester, P. Z. S-, 1902, II, p. 366. 



This species is very similar to D. costaius, from which it diflfers in 

 havmg a more elongate carapace with more oblique antennal borders, and 

 in the form of the left cheliped. 



In the left cheliped the upper border of the merus is ill-defined, and 

 the inner lower border is not spinose ; the palm of the hand is as high as long, 

 and the fixed finger is not deflexed ; the whole outer surface of the palm and 

 fingers is granulous ; the spines on the lower edge of the hand are not worn 

 or obsolescent, but are acute and are continued on to the edge of the fixed 

 finger ; there is no oblique crest in the lower part of the outer surface of the 

 palm, but in the upper part there is a row of spines parallel with the 

 upper border. 



In the and and 3rd legs the anterior border of the propodite is very 

 obscurely serrulate. 



Similar in size to D. costatus. Distribution : East coast of India ; N. 

 Australia. 



4320 

 10 



4721 

 10 



Madras Purchased (2). 



Off Orissa coast, 68 fath. " Investigator " (4). 



8. Diogenes investigatoris, n. sp, Plate VI., fig. g. 



This species is very similar to D. costatus and rectimanus, so that only 

 its distinguishing characters need be noted. 



From D. costatus it differs in the following particulars : — 

 The carapace is narrower and more elongate. The free edge of the 

 ophthalmic scales is spinose throughout. 



The antennal is quite as long as the antennular peduncle : the antennal 

 flagellum is remarkably coarse, and is not quite as long as the carapace. The 

 antennal acicle falls well short of the base of the last joint of the peduncle. 



