822 H. I. pococK 



gins vei7 little thickened ; keels in the hinder half of the body 

 sloping obliquely upwards and backwards. Upper surface of 

 somites nearly smooth, only lightly ragulose, lateral surface 

 minutely granular, sulcus straight, extending from the 5'*" (4"") 

 to the IS^"*; the anterior furrow not beaded or noticeably sculp- 

 tured, infero -lateral keel well developed, posteriorly dentate, at 

 the anterior end of the body decreasing in size from before 

 backwards, and represented merely by a swelling at the po- 

 sterior end. Anal tergile nearly parallel sided, triangular, trun- 

 cate, subbifid. Sternite rounded, bituberculate. Legs of moderate 

 length , hairy ; femora lightly curved , longer than tarsi wdiich do 

 not much exceed the tibiae; on the 15* somite the tibia and tarsus 

 are about equal. Sternum of S**" somite furnished in front with 

 a projecting, angular bifid prominence; sternum of seventh with 

 a large tubercle in front of the base of the copulatory foot; 

 copulatory feet very much resembling in form that of 0. karschii 

 but considerably longer, the distal and external process wdiich 

 constitutes a sheath for the terminal llagellum is also much 

 more expanded than in that species. A thick pad of hairs on 

 the tarsi of the legs behind the copulatory organ. 



Length 45; width 5.2 mm. 



Loc. S. Tenasserim. One specimen obtained by E. W. Oates. 



34. Oi*tlionioi-i>lxa l'useo-collar-is, sp. n. 



(Fig. 18). 



9 . Colour; head, antennae and 1-^' tergite, with the exception 

 of its keels, fuscous ; the rest of the tergitos fuscous in front 

 right back to the sulcus ; lateral surface of the segments fuscous ; 

 legs intascate, paler at the base. Dorsal surface smooth and 

 polished; the sulcus deep, not sculptured, extending from the 

 4* backwards; back lightly convex, the keels rising below the 

 summit of the sides, horizontal, their margins relatively but little 

 thickened, considerably less so than in karschii, their anterior 

 angles and borders convex, posterior angles strongly acute, with 



