810 R. I. POCOCK 



gilè depressed laterally, with a horizontal keel rising very low 

 on the lateral surface, much below the level of the keels 

 of the first and third somites; keel with straight subdcntate 

 lateral margin and both anterior and posterior angles produced. 

 Keel of S''*^ somite small, horizontal, rising about the middle 

 of the side , its posterior angle sharp ; 4* keel like the 3*''' 

 but higher on the side of the somite. 5"" and following keels 

 situated in the upper half of the side, but not at the summit, 

 with antero-external border convex , bidentate lateral margin 

 and spiniform posterior angle ; pores situated behind the posterior 

 tooth. Sulcus very deep, extending from S**" to 18"' and running 

 almost from keel to keel ; both this sulcus and the sulcus which 

 separates the anterior cylindrical half of the somite from the 

 posterior keel-bearing portion studded with a row of close set 

 small tubercles. No trace of infero-lateral keels. Along the an- 

 terior and along the posterior edges of the keel-bearing part of 

 each tergite is a transverse row of four widely spaced setae. 

 Almost wholly smooth and shining. Anal process triangular, 

 truncate and subbifid; sternite bituberculate. Sternal areas trans- 

 versely sulcate, widish. Legs longish and slender. 



cT. Anterior half of slernum of S**" somite furnished with 

 an erect, bifid process. Anterior legs distally incrassate. Copu- 

 lalory feet long and stout, the coxae of the legs behind and in 

 front of them widely separated ; much dilated distally where it 

 divides into two processes, a superior, inner smaller piece, and 

 an exterior, very much larger, sheath - like piece, which, 

 curved through half a circle, is very convex externally, and 

 hollowed internally. 



Length about 17 mm. 



Rangoon (Gates), Palon in Pegu (Fea). 



This species in size and form calls to mind 0. coarclata, but 

 differs in that the keels are much more strongly dentate, and 

 more sharply produced behind. In both of these particulars it 

 approaches the genus Prionopeltis. 



