(Page 551) 



Black, rather glistening; elytral middle-disk brownish-yellow; legs 

 pitch-brown, often with lighter tibiae and tarsi. 



(Page 552) 



The entire dorsal plane of the body is all over very densely and fine- 

 ly leathery-reticulated j the head (Fig. 158) in the p a little narrower 

 than pronotum, in robust O O as broad as this, posteriorly not constrict- 

 ed, across middle rether densely and robustly, anteriorly not punctated, 

 with a very fine groove along inner margin of the eye, the vertex with 

 three short grooves and posteriorly with fine transverse grooves, anten- 

 nae longer than in arenarius ; pronotum anteriorly as broad as elytra, 

 l£ times as broad as long, slightly convex, with fine and isolated punc- 

 tation, sharply middle-grooved; elytra as long as, or shorter than pro- 

 notum, punctated like this, their posterior margin very finely marginat- 

 ed; abdomen not punctated. L. 2.5-4 mm. 



In the o, which often is considerably larger than Q , the head is most 



often larger and thicker, its temples longer, and grooves of the forehead 



more distinct and deeper than in the latter, fore-corners of clypeus are 



more or less elongated spiniform, and the antennae rather slender. Sixth 



ventral joint of abdomen (Fig. 159) is impressed posteriorly at middle, 



the impression roundedly emarginated with sharp corners; the seventh joint 



is at middle feebly impressed and smoothed, hind-corners of impression 



inwardly directed bidentate. 



Fig. 158. Platystethus cornatus Jravh. $ . 



rig. 159. Last three ventral abdominal joints of Platystethus 

 cornutus Jravh. o • 



-4C- 



