64 



Antero-lateral borders of carapace cut into four claw-like spines (exclusive 

 of the orbital tooth), shorter than the postero-lateral borders. 



Epigastric crests rugulose, well in advance of the post-orbital crests ; the 

 latter are fairly sharp, but usually become broken and more or less indistinct 

 beyond the points where they are cut or met by the cervical groove. 



Sixth abdominal segment of adult male not quite twice as broad as long, 

 7th segment not quite as long as broad. 



Antennal fossae and epistome a good deal overshadowed by the front. All 

 the mouth-parts are as in P. dayanum, the only noteworthy difiference being in 

 the shape of the merus of the external maxillipeds, which, though broad, is 

 rudely subtriangular rather than subquadrangular. 



Chelipeds in the adult female almost equal (as they also are in the only 

 adult male of the collection, which, however, as it possesses, in addition to 

 well-formed male appendages and ducts, large porous tubercles in the position 

 of the female openings, may be abnormal). The chelipeds are rather slender 

 and are shorter than the legs ; their surface is almost smooth, though there is 

 some much-worn squamiform sculpture on the carpus and upper surface of the 

 palm ; there is a subterminal spine on the ujDper border of the merus, and a 

 strong spine — with a fullness, not a distinct cusp, at its base — at the inner 

 angle of the carpus ; the fingers are slender, are longer than the palm, and do 

 not gape much. 



Legs stout, the edges of the three terminal joints are thickly clothed with 

 a short scrubby fur, which also tends to invade the surfaces ; the propodites 

 are more than twice as broad as long and are rather shorter than their 

 dactyli. 



In an adult female the carapace is IB inch long, '2t^ inches broad, 

 and liths inch deep. 



Ex 



1 ? (type). 

 4 young. 



1 9. 

 1 6- 

 2(J 

 1 ? 



1 S 



2 ?, 



