1334 
REVISION OF THE GENUS HETERONYX, 
H. FORTis, sp.nov. 
Minus elongatus ; robustus ; postice leviter dilatatus ; minus 
nitidus ; niger vel ferrugineus, antennis palpisque testaceis, pedibus 
plus minus piceis vel rufescentibus ; capite crebre rugulose, pro- 
thorace leviter minus crebre, elytris rugulose sat fortiter, pygidio 
vix perspicue, punctulatis j clypeo antice leviter rotundato, 
margine reflexo medio gracili ; prothorace fortiter transverse, 
[Long. 4|^, lat. 2|- lines. 
The clypeus is wide and short, not forming an even surface 
with the rest of the head, the somewhat angulated clypeal suture 
appearing to be obscurely elevated, the appearance being caused, 
however, almost entirely by the clypeus being on a plane slightly 
lower than that of the rest of the head ; the front margin is 
strongly reflexed on the sides, but much feebler towards the middle. 
The prothorax is nearly twice as wide as its length down the 
middle, the base not quite half again as wide as the front, which 
is very gently and widely emarginate, with angles but little 
produced ; the sides diverge strongly from the front to near the 
middle, and thence less strongly to the base (which is widely and 
rather strongly lobed in the middle), with which they appear 
(viewed from above) to form right or almost acute angles ; but 
the true margin (viewed from the .side) is seen to join the base 
in a curve. The puncturation is not fine nor close, but has a 
shallow, effaced appearance, and there is a fairly well marked 
dorsal channel. The transverse wrinkling of the elytra is quite 
distinct ; each of these bears about nine scarcely traceable strise, 
among which are several costse feebly defined, rather wide, but 
very little elevated (in some examples quite obsolete) ; the 
presence of these give.s at a first glance an impression of the 
elytra being obscurely geminate-striate, but on careful in.spection 
it is seen that the costae are not bordered by seriate punctures, 
and that the puncturation and wrinkling of the general surface is 
not interrupted by them. The lateral fringe is not continued 
I'ound the apex of the elytra, which has a very narrow mem- 
branous border. The pygidium is carinate in its basal half, and 
