610 ME. R. I. POCOCK ON THE 



Cktptodesmus tincentii, sp. n. (PI. XXXIX. figs. 2-2 J.) 



Colotir black, the borders of the segments pale, from which 

 short pale bands run inwards towards the middle of the plate. 

 Pale beneath. 



Head punctured, shortly hairy, but smooth and shiny below ; 

 with a roughened cap on the forehead, 



Antennce with fifth segment the longest and thickest. The 

 upper surface of the hody roughened apparently by the presence 

 of thickly-set minute pores, each of which bears a hair. The 

 border of the first tergite even, not lobate; eleven abbreviated 

 grooves radiate from it,.towards the centre o£ the plate, which is 

 elevated and tubercular. The rest of the tergites bear dorsally 

 two parallel rows of crests, each consisting of three (the posterior 

 smaller) rounded tubercles ; a similar crest situated on the 

 middle of the lateral surface; the rest of the tergites furnished 

 with tubercles of various sizes. The keels depressed, completely 

 covering the legs, contiguous, those of the 2nd directed forwards, 

 those of the posterior 4 somites directed backwards, those of the 

 19th, however, not projecting beyond the level of the anal length ; 

 the anterior edge of the keel raised and entire, the anterior angle 

 rounded ; the lateral margin quadrilobate or trilobate at the 

 anterior end of the body, the posterior angle squared or acute 

 posteriorly, the posterior border straight or concave, notched in 

 correspondence with the grooves that run on to the dorsal and 

 ventral surface. Pores apparently absent. Anal tergite with 

 two large tubercles on its upper surface, its posterior border 

 trilobate, the median lobe large and rounded. Sternite bituber- 

 cular. Sternal areas as large as in Polydesmus, smooth and not 

 spined. In the legs the trochanter is almost as long as the 

 femur. 



In the ? the sternum of the third somite is produced into an 

 upstanding, trilobate ridge behind the generative aperture. 



In the S the keels are considerably less depressed than in the 

 2 ; the sternum of the 8th somite is furnished in front with a pair 

 of tubercles tipped with a brush of hairs, a somewhat similar 

 tubercle being noticeable upon the coxa of the anterior legs of 

 this somite. Copulatory feet crossed in a state of repose, 

 swollen, and hairy at their proximal extremities ; the distal sclerite 

 elongate and slender, lightly curved, hollowed behind, termi- 

 nating in two processes, one short and rounded, the other elongate, 

 blade-like, and directed backwards. 



