258 A. Alcock — Carcinological Fauna of India. [No. 2, 



Key to the Indian species of Pariphiculus. 



I. Carapace a little broader than long' : front 



not at all prominent : a spiniform tubercle 



on the cardiac region between one on either 



branchial region : chelipeds about Jf the 



length of the carapace P. coronatus. 



II. Carapace longer than broad : front marked- 

 ly prominent : cardiac region and branchial 

 regions immediately on either side of it 

 unarmed : chelipeds about 1\ the length of 

 the carapace P. rostratus. 



82, Pariphiculus coronatus, Alcock & Anderson. 



Eandallia coronata, Alcock & Anderson, J. A. S. B., Vol. LXIII. pt. 2, 1894, 

 p. 177. 



Pariphiculus coronatus, Alcock & Anderson, 111. Zool. ' Investigator,' Crust. 

 pi. xxiv. fig. 2 (in the press). 



Carapace globular, just broader than long, its surface closely 

 covered with large vesiculous granules beneath a dense fine-textured 

 pubescence : the intestinal region forms an independent circular swell- 

 ing, bounded by a deepish groove, and surmounted by two spiniform 

 tubercles, one behind the other : the gastric region is partly defined 

 anteriorly by two creases, and the cardiac region is partly denned 

 posteriorly by two grooves, and a narrow and indistinct groove separates 

 tbe hepatic from the branchial region on either side : on either lateral 

 margin are 5 spiniform tubercles, not including the dentiform prolonga- 

 tion of the outer angle of the buccal cavern, and at either end of the 

 short posterior margin is a dentiform tubercle : 3 similar tubercles 

 occur, one in the middle of tbe cardiac region and' one on either side 

 of it on the after part of tbe branchial regions — these three, along 

 with the last on the lateral borders and the two on the posterior margin, 

 forming a ring round the tumid intestinal region : the side-wall of 

 the carapace is grooved longitudinally just above the epimeral edge. 



The front is bidentate, its tips just projecting beyond the level of 

 the buccal cavern. 



The chelipeds in the female (male unknown) are If times the 

 length of the carapace : the hand is inflated, cylindrical, and about § tbe 

 length of the fingers : the fingers are very slender, almost hairless, 

 hooked at tip, finely denticulate with a few slightly larger denticles at 

 distant intervals, and they open in an obliquely vertical plane. 



Length of carapace of female (apparently adult) 16 millim., breadth 

 17 millim. 



Loc. Bay of Bengal, off Coromandel coast, 112 fms. 



