CONILERA CYLINDRACEA, 305 
TuHE whole upper surface of this animal is smooth, glossy 
and impunctate, of a pale yellow colour, clouded with 
cinereous on the sides. The eyes are small and distant 
apart; the antenne short, the upper not extending 
beyond the eyes, composed of four rather strong sub- 
cylindrical basal joints, and a flagellum of about seven 
articuli ; the lower antennz (separated from each other 
by a narrow raised ridge) are rather more than twice 
the length of the upper pair; they consist of four 
short basal joints, a fifth slender joint, and a flagellum 
with about twelve articuli. The labrum is trans- 
verse, with the anterior angles rounded, and the middle 
of the free margin shghtly emarginate. The man- 
dibles are robust and horny, with the apex incurved 
and three-toothed, the middle of the inner margin fur- 
nished with a slender movable appendage slightly ser- 
rated on its upper edge; the foot-jaws are broad, shutting 
the mouth from below, six-jointed, the three terminal 
joints broad and flat, with their outer margins setose. 
The first pair of maxilla are composed of a broad basal 
joint terminated by two somewhat conical lobes, of which 
the outer is divided into two parts by an oblique articu- 
lation. The second pair of maxilla (represented more 
magnified than the preceding mouth-organs) are termi- 
nated by three lobes, of which the outermost is largest, 
somewhat triangular, and furnished with strong bristles 
on its inner edge; the middle lobe is a slender simple 
piece, but the innermost lobe is much more complicated, 
terminated by three small pieces, of which the outer is 
slender, curved, and setose at the tip ; the two inner lobes 
are of equal size, conical, and strongly and transversely 
verticillated across their centre. The three fore pairs 
of legs are short and very robust, with the middle 
joints broad, flattened, and produced into an angle on 
VOL. Il. x 
