570 Mr. T. Vernon "Wollaston on the 
of Avhich is rather to be subtriangular, than posteriorly 
narrowed), and its depressed, less widely separated eyes, 
added to its very grossly and equally punctured prothorax 
(which is free from a constriction in front, and is nearly 
unsinuated at the base), and its convex body, are far more 
in accordance with what obtains in such sub-Hylastideous 
groups as Brachytemnus. On the whole, however, I think 
it will be more natural to retain it in the vicinity of the 
former, — and more especially since their is no appearance 
of the excessive reduction in the length of the scape which 
is so characteristic of the latter ; nor yet of the obtusely- 
desilient apical region of the elytra, the subcontiguous 
anterior coxa?, and the slender feet, of those particular 
types. Its tibia? are not so abbreviated as in Stereohorus 
and Stereot7'ibiLs, and the front pair seem to be simple (or 
^<7^-augmented internally ; its scutellum is largely deve- 
loped ; and its rostrum, although unprovided with any 
anomalous tubercles and channel-like fissures, is never- 
theless obsoletely gibbose, or uneven, on its upper surface. 
88. Stereoborus {nov. gen.). — The insects which 
I would include under the present genus and the follow- 
ing one, although apparently (for the most part) unde- 
scribed, are some of them (on account, doubtless, of their 
rather large size, and dark, shining, deeply-sculptured 
surfaces) mixed-up in collections with the Cossoni — from 
which, however, they are, nevertheless, totally distinct. 
Indeed in the construction of their extremely robust and 
thickened legs they are very peculiar, — the femora (though 
especially the anterior ones) being greatly incrassated, 
Avhilst the tibiae are unusually short, broad, and somewhat 
compressed, Avith the terminal hook powerfully developed ; 
the front pair moreover being abnormally augmented on 
their inner edge (at some distance behind the internal 
angle) by a kind of lamelliform triangular plate (Avhich 
however only becomes conspicuous when the insect is 
viewed obliquely). In other respects Stereoborus recedes 
from Cossonus in its head being considerably larger and 
broader ; in its eyes (which are rounder and more promi- 
nent) being consequently much wider apart ; in its rostrum 
(which is furnished Avith a narrow, anteriorly-CA^anescent 
channel in the centre, arising out of a minute frontal 
foA-ea) being conspicuously shorter, broader, and more 
pai'allel (in fact nearly quadrate^ ; in its prothorax being 
longer, and somcAvhat more cylindrical ; and in its coxre 
