Genera of the Cossonidce. 579 
known readily from the neiglibouring forms by their eyes 
being enormously developed and very prominent, by their 
antennas (which have the second funiculus-joint much ab- 
breviated, and the club abrupt) being inserted towards the 
base of their rostrum, and by the latter being exceedingly 
broad (indeed scarcely narrower than the head), but never- 
theless parallel, much arcuated, and straightly truncate, 
or lopped-ofF, in front. The third articulation of their 
feet is simple, and their coxje (even the anterior pair) are 
widely and subequally separated. 
101. Pachyops (nov. gen.). — Two examples of the 
species for which the present genus has been established 
(which have been communicated by Mr. Pascoe), Avere 
obtained by Mr. Wallace at Sarawak in Borneo. They 
may be known from the allied forms by their narrow, 
parallel, cylindric, and rather deeply, closely sculptured 
bodies ; by their broad, thick, convex, greatly exserted 
head ; by their short and wide rostrum ; by their long, 
subconical prothorax, which is but lightly constricted in 
front ; by their elongate scape, and roundish, abrupt, com- 
pressed, largely-developed club ; and by their coxje being 
somewhat less separated than is the case in the neigh- 
bouring groups, — the anterior pair being scarcely, if at all, 
more remote than in the RhyncoU. 
102. Pentamimus {nov. gen.). — Several examples of 
a Cossonid Avhich I have received fr'om Mr. Pascoe as 
coming from King George's Sound in southern Australia, 
and a closely allied species (likewise Australian) which 
has been communicated by Mr. Fry, have so much the 
prima facie aspect of large RhyncoU that they might be 
almost supposed to pertain to that genus. Yet their 
5-jointed funiculus, and rounder and more developed club, 
show them to be altogether distinct ; though their affinities 
are so immistakeably Avith the Phyncoliform groups that 
it would be absurd to suppose (on account of the structure 
of their funiculus) that they have anything whatever to do 
with the subfamily Pentarthrides. In other respects Pen- 
tamimus is remarkable for its shining, deeply sculptured 
and cylindrical body ; for its thickened head, and short, 
broad (though parallel) rostrum ; for its somewhat incras- 
sated antennfe (which are implanted a little behind the 
middle of the latter) having their scape a good deal 
lengthened and backwardly curved ; and for its legs being 
rather long and thick, with the third tarsal joint simple. 
