364 Mr. R. I. Pocock on Chilopoda and Diplopoda 



Gamhalomorpha formosa^ sp. n. 



Colour mostly orange-yellow, with a wide black band on 

 each side extending from the second segment to tlie end of 

 the body ; the upper half of the head and of the second, third, 

 and fourth segments fuscous, but the first tergite or coUum 

 entirely yellow ; antennae and the distal half of the legs palely 

 fuscous. 



Head smooth ; eyes composed of about nine ocelli arranged 

 in two rows. 



Collum furnished with nine complete high keels, extending 

 from the anterior to tlie posterior margin. On the rest of the 

 segments the so-called keels are represented by two transverse 

 rows of tubercles, of which the tracheal tubercle is the largest 

 and rounded at the summit, while the rest are lower and more 

 spiniform ; there are nine rows of these tubercles or caringe, 

 three rows lying between the tracheal carina and two on each 

 side beneath it ; the areas between the keels are densely 

 sculptured with impressions which form anastomosing ridges 

 arranged in a reticulated pattern ; the cylindrical part of the 

 segments are densely punctured in front, but beliind they 

 have the appearance of being gouged out into longitudinal 

 furrows. 



Anal tergite with a single median dentiform tubercle, 

 sculptured with a widely rounded posterior border, which 

 distinctly overhangs the valves ; valves sculptured, hairy, 

 impressed on each side of the borders. 



Legs hairy. 



Number of segments 72. 



Length about 50 raillim. 



Lac. Hong Kong {J. J. Walker), 



C.formosais most nearly allied to C. Dorics, Pocock (Ann. 

 Mus. Genov. (2) xiii. p. 389), from Pegu. It resembles that 

 species in having more than one series of ocelli, the collum 

 carinate above, and only nine rows of tergal keels, each keel 

 being completely divided into an anterior and a posterior 

 tubercle. It may be at once recognized from Dorice by the 

 fact that in the latter species the keels of the collum are 

 divided into an anterior and a posterior series. 



The species of this genus known to me may be recognized 

 as follows : — 



