276 Mr. F. Bates' Descriptions of 



into a large blunt tooth ; last joint of maxillary palpi large, 

 cultriforra ; joints 8-10 of antennae rounded, moniliform ; 

 antennary orbits longer, less rounded at the sides ; epi- 

 stoma shorter, sides more parallel, strongly foveately de- 

 pressed at each side, the suture much less strongly marked ; 

 eyes larger and broader ; prothorax relatively broader, less 

 contracted anteriorly and consequently less strongly and 

 more evenly rounded at the sides, the lateral edges strongly 

 thickened, or produced into an imiform thick fold ; elytra 

 much less convex, expanded, sides margined, the edges 

 reflexed, less rounded at the shoulders, Avithout the tri- 

 angular depression behind the scutellum ; epipleural fold 

 relatively broader, more horizontal ; prosternal process 

 bilobed behind ; tibiae less compressed, the intermediate 

 slightly curved at the outer side, the four posterior with a 

 tomentose line on their inner face extending from near the 

 base to the apex ;* tibial spurs smaller, the inner one very 

 minute in all : body smooth. 



The form of the elytra in this genus more nearly a]i- 

 proaches that of some species of Saragus, but the sides 

 are more rounded. From Onosterrhus it may be dis- 

 tinguished by its more expanded and considerably less 

 convex form, the deeply sulcate gula, the large cultriform 

 terminal joint of the maxillary palpi, &c. 



In all three genera (Ni/ctozoilus, Hypocilibe and Ono- 

 sterrhus^ the membranous hinge to the labrum (unless this 

 organ be unduly intruded) is broadly visible. 



H. Macleayi, n. sp. 



Long. 94 lin. ; elytra lat. b\ lin. — Dull black, with a 

 dull reddish -purple tinge at the edges of the elytra, the 

 scutellar region, and on the disc of the prothorax ; head 

 punctured ; prothorax and elytra very finel}' and uniformly 

 punctulate ; sides of the former, Avithin the thickened 

 margin, slightly transversely rugulose; on each elytron a 

 trace of four (besides the sutural) broad costre (totally 

 obliterated at the base), and, when viewed obliquely, a 

 faint indication of an intercostal, elevated reticulate struc- 

 ture, most apparent at the suture ; a row of well-marked 

 punctures close by the margin, extending fi-om the base to 

 beyond the middle ; underside bright-black, finely punc- 



* Possibly only a sexual character, as a similar thing is found in some 

 examples of Onosterrhvs and not in others. 



