Genera of the Cossonidce. 565 
depressed ; for their antennse (which are implanted a little 
before the middle of the rostrum) having their scape 
greatly abbreviated, but rather unusually (and suddenly) 
clavate at its apex ; for all their cox^ (even the front ones) 
being widely, and subequally, separated ; and for the third 
joint of their feet being simple. Their rostrum is not 
divided from the forehead by a basal line as in Catole- 
thrus ; and their body, as in that genus, seems to be 
perfectly free from pubescence. 
80. Glctiotrogus {nov. gen.). — Although prima facie 
on the Cossonus type, the curious insect which I have 
made to constitute the type of the present genus, and 
Avhich has been communicated by Mr. Pascoe and Mr. 
Janson as having been captured by Mr. Wallace in the 
islands of Morty and Gilolo of the Malay archipelago, is 
one of the most anomalous members of the family with 
Avhich I am acquainted, — being conspicuous not only for 
its highly-polished, almost unsculptured, and extremely 
flattened body (both above and below) ; but likewise for 
its greatly exserted, depressed, elongate-squarish head ; its 
large but sunken eyes, which are a good deal approximated 
on the under side of the latter ; for its exceedingly short 
and broad, but nevertheless almost parallel rostrum (which 
is merely a little contracted at the base) ; for its antenna3 
(which are inserted considerably behind the middle of the 
latter) having their scape elongate, outwardly curved and 
compressed, and greatly clavate anteriorly (where however 
it is obliquely lopped-off on the inner side, occasioning 
a tolerably well defined angle to be shaped-out at some 
distance from the tip), their funiculus much abbreviated, 
but with the joints increasing gradually, but very con- 
spicuously, in width towards the club — which is exceed- 
ingly large, elongate-oval, and densely clothed (as with 
velvet) ; for its prothorax being straightly truncated (or 
even, if anything, perhaps, a little scooped-out), instead of 
trisinuated, behind, unconstricted in front, and perfectly 
even ; and for its legs (which are short, especially the 
hinder ones) being very widely separated at their base, 
with the femora much clavate, and with the tarsi (the 
third joint of which is simple) rather slender and filiform. 
81. HoMALOTROGUS {nov. gen.). — The present genus, 
together Avith the one which precedes and the one which 
follows it, belong clearly to the same geographical type 
