392 University of California Publications in Zoology [Vol. 19 



Head wider than long; appearing smooth and shining, but under 

 the lens showing some obscure shallow punctae. Antennae short, 

 reaching only to the third segment ; composed of but seventeen articles. 

 Presternum armed on each side with four teeth, of which the two 

 most mesal are closer together, less deeply and widely separated than 

 the other two; the second from ectal end largest (cf. pi. 27, fig. 13). 



Cephalic plate wider than long; appearing smooth and shining, but 

 under the lens showing some obscure shallow punctae. Antennae 

 short, reaching only to third segment ; composed of only seventeen 

 articles. 



Dorsal plates bisulcate from the seventh caudad. Only the twenty- 

 first is strongly margined, but the five preceding ones are more weakly, 

 sometimes vaguely and incompletely margined. Last tergite angularly 

 produced caudad (cf. pi. 27, fig. 15). 



Ventral plates without any complete sulci, at most with short 

 anterior traces. Last plate strongly narrowed caudad, the caudal 

 margin excavated (pi. 27, fig. 14). 



Coxopleural processes of but moderate length ; bidentate at apex, 

 a single marginal spine at base (pi. 27, fig. 16). 



Only the first five pairs of legs with two tarsal spines, the others to 

 the twentieth inclusive with tarsal spine single. 



Femur of anal legs armed on ventral surface ectally with three 

 spines, mesally with two ; on mesal surface a single spine ; no distal 

 spine or process (pi. 28, fig. 21). 



Measurements. — Length, 44 mm. 



Locality. — India : Coonoor. Five specimens collected April 3. 1916. 

 All but two of these have lost the anal legs. 



Comparisons. — Resembles R. longipes (Newport), but readily dis- 

 tinguished by various details. Antennae shorter and composed of but 

 seventeen articles. Prosternal teeth and femuroidal process obviously 

 different in form and the limiting furrow of prosternal dental plates 

 more obtuse. Differing in anal legs in having no spine at distal 

 corner, etc. 



5. Ethmostigmus coonooranus, sp. nov. 



Description. — Color olive brown, the head darkest. Last dorsal 

 plate and all legs chestnut, or the proximal joints sometimes tending 

 toward olive brown. 



Antennae composed of twenty joints, the joints longer than wide, 

 the first three glabrous, and the others shortly pilose, as usual. 



