68 



rather to the orbit than to the front) are the most acute, and are separated from 

 the middle four, that form the front proper, by a deep notch. 



There is a single fissure near the middle of the upper margin of the orljit, 

 the second fissure of this margin being a closed suture. The inner angle of the 

 lower edge of the orbit is not dentiform. The epistome is very slightly sunk. 



Chelipeds slightly more than twice the length of the carapace, rather more 

 than half their extent being hand, and having the usual squamiform markings. 

 There are 2 or 3 spines on the distal half of the anterior (inner) border of the 

 arm ; a very strong spine at the inner angle of the wrist and three small 

 spines on the outer angle ; four spines on the hand, one being on the outer surface 

 at the extreme base, the other three grouped in a triangle at and near the distal 

 end of the upper surface. 



Colours in life, salmon pink, clouded on carapace. 



Length of carapace 24 millim., breadth including spines 45 millim., measured 

 to base of spines 38 millim, 



Coromandel coast, 80 to 110 fms. 



Sub-family Carcininse. 

 Benthochascon, Alcock and Anderson. 



Carapace subquadrilateral, its breadth being very little greater than its 

 length, depressed, the regions faintly indicated by slight inequalities of level. 



Front about a fourth the greatest breadth of the carapace, sufficiently pro- 

 minent beyond the orl^its, cut into three elegant lobes of nearly equal size, the 

 middle one being notched at tip. Antero-lateral borders hardly arched, much 

 shorter than the postero-lateral borders which they meet at a widely obtuse and 

 hardly noticeable angle, cut into four teeth (including the outer angle of the 

 orlnt), the hindmost of which is spiniform. Postero-lateral borders slightly con- 

 vergent. Posterior border rather longer than the fronto-orbital. 



Eyestalks short and thick ; eyes very large. The orbits are deep ; in the 

 upper margin are traces of two obsolescent sutures, and in the lower margin, 

 just below the outer angle, is a shallow and inconspicuous notch : the inner angle 

 of the lower margin is acutely produced. 



The antennules fold almost transversely, their basal joint is very large, their 

 fossEe are widely 023en to their respective orbits. 



The antennte lie loosely in the orbital hiatus : the basal joint is short slender 

 and moveable, and has its antero-external angle produced to form a blunt spinule ; 

 the next joint just reaches the turned down edge of the front, the flagellum is 

 considerably longer than the orbit. 



