1358 
REVISION OF THE GENUS HETERONYX, 
with the rest of the head, the clypeal suture being very fine and 
angulated ] its surface is closely and rather finely rugose. The 
remainder of the head (which with the clypeus is clothed more 
closely than the prothorax and elytra with semi-erect brown 
hairs) is punctured sparingly and rather faintly, uniformly with 
the prothorax. The prothorax is a little more than half again as 
wide as its length down the middle, and the base is about half 
again as wide as the front, which is rather strongly emarginate 
with acutely produced angles ; the sides are only lightly rounded 
(their greatest divergence being a little behind the middle) and, 
viewed fronl above, seem to form almost right angles with the 
base which is modex'ately lobed in the middle ; its sm-face is 
clothed uniformly with the elytra, and much more sparingly than 
the head, with moderately long semi-erect light brown hairs. The 
elytra are non-striate, and are transversely wrinkled and punctured 
a little more closely and a little more strongly than the prothorax ; 
their lateral fringe is not continued in any conspicuous way round 
the apex, which, however, has a distinct membranous border. 
The pygiclium is not keeled and is finely and moderately closely 
punctured. The metasternum, hind coxse, and ventral segments 
are punctured rather finely and closely (a little more sparingly 
and strongly in the middle, — especially the hind coxae) ; the hind 
coxae are much shorter than the metasternum, and a little longeron 
the external margin than the second ventral segment ; the ventral 
series consist of fine hairs, and are much confused with other 
hairs. The hind femora do not differ much from the intermediate ; 
their inner apical angle rather well defined ; the puncturation of 
their undersurface rather confused on the external half. TlaAvs 
bifid. [Long- 4;i, lat. 21 lines. 
N.B. — A specimen taken by my friend, Mr. J. Anderson, at 
Port Lincoln, is larger (long. 5| lines) with the clypeal margin 
scarcely distinct in the middle, and the reddish tone scarcely 
noticeable even on the pi’othorax, but I think it can hardly be 
treated as distinct. 
