284 Mr. R. I. Pocock on some 



Trunk smooth tlioiigli not polished, piriform ; width of 

 abdomen a little more than two thirds length of trunk (5:7). 

 Carapace convex transversely, about twice as wide as long, 

 widely and transversely truncate anteriorly, its anterior lateral 

 angles rounded, its sides nearly parallel, the interocular area 

 elevated into an erect triangularly spiniform tooth, at the 

 base of which on each side the eye is situated ; the area in 

 front of the tubercle nearly vertical, that behind it horizontal 

 in the middle, strongly sloped away at the sides, where there 

 is a distinct tubercle, and just above and behind it a deep ])it 

 leading apparently into a tunnel which passes beneath a kind 

 of bridge formed by tlie union of the middle of the dorsal 

 surface of the carapace and the corresponding area of the first 

 segment of the abdomen ; the middle of the upper surface of 

 this bridge marked with a deep pit, which evidently corre- 

 sponds to the shallow but wide sulcus which longitudinally 

 divides the anterior abdominal tergal ridges, but dies out on 

 the posterior ones ; these ridges are nine in number, counting 

 that in the first that forms the hinder half of the bridge ; 

 none of the terga are free and all the sterna are similarly 

 fused, being represented by transverse ridges, and the original 

 sutures between them by grooves. 



Mandibles only moderately strong, the basal segment 

 distally expanded and terminating above in a bluntly rounded 

 prominence, its upper edge longitudinally straight, the forceps 

 weak, the digits scarcely sinuate; when extended these 

 appendages reach only to the end of the femur of the palp. 



Palpi reaching just past the tibia of the first leg, bearing a 

 Single cylindrical process on the under surface of the maxilla, 

 trochanter, and base of femur. 



Legs longisli ; the coxfB sending out in front and behind a 

 buttress to sujiport the narrowed base of the trochanter j this 

 buttress on the posterior face of the second coxa is double, 

 and bears, in addition, a tubercle, while on the upper surface 

 of the segment there is a pair of large tubercles beneath the 

 edge of the carapace, and the inner angle of this segment is 

 armed with a forwardly directed angular tooth projecting 

 partially beneath tiie coxa of the first leg, upon which close 

 to the lip-like maxillary plate there is a low rounded promi- 

 nence ; the rest of the coxai and of the segments of the legs 

 are without special processes. The coxo-sternal area between 

 the genital plate and the mouth-parts longitudinally depressed 

 and forming a deep wide channel. 



Genital j>laie triangularly heart-shaped, about as wide at 

 the base as it is long. 



Measurements in millimetres. — Total length of trunk 7 ; 



