Malacoderm Genera Prionocerus and Idgia. 361 
The three females seen from Mandar (P. Cardon), all of 
large size, have stouter antennz, and they may belong to a 
different species? J. gorhami, Pic, is a colour-variety of 
I, dimelena, see ante, p. 347, though the former is here given 
specific rank. 
45, Idgia flavibuceis. 
Ldgia flavibuccis, Bourg. Ann, Soc. Ent. Belg. xxxvi. p. 287 (1892) 
(d 2). 
&. Eyes extremely large, almost contiguous (narrowly 
separated in ?) ; antenne moderately elongate, a little longer 
than in ?, distinctly thickened outwards, joints 7-10 
gradually decreasing in length, 11 concave within, curved, 
nearly as long as 9 and 10 united ; anterior tarsal joints 1-3 
with a black comb along their inner edge. Genital armature 
(Pl. XII. fig. 37) : lateral lobes sinuous within and curved 
inward at the tip, as seen from above; median lobe almost 
straight, drawn out into a curved point at the apex. 
Hab. Ixpvta, Mandar in Western Bengal (Cardon: type), 
Bhotan (Dr. Pemberton, in Mus. Brit.: ¢ 2). 
This is a form of the variable /. dimelena, Walk, (=car- 
doni, Bourg.), with the head wholly testaceous, a A-shaped 
black mark between the eyes excepted, the antenne shorter 
and not so slender, and the terminal dorsal segment of the 
abdomen entire. The median lobe is very similar in the 
two insects. 
46. Idgia luteipes, sp. u. 
6. Elongate, narrow, feebly shining, finely pubescent, 
and sparsely nigro-setose ; testaceous, the head (the labrum 
and anterior portion of the epistoma excepted), and a rather 
large apical patch on the elytra, black. Head slightly pro- 
duced anteriorly, the labrum transverse, trapezoidal, excavate ; 
eyes very large, almost contiguous ; antennz long, slender, 
filiform, joints 3-10 subequal in length, 11 concave, a little 
longer than 10. Prothorax longer than broad, scarcely 
wider than the head, strongly sinuate at the sides posteriorly, 
rugulosely punctate. Hlytra long, subparallel, densely, 
rugulosely punctate, without seriately-arranged granules on 
the disc. Anterior tarsal joints 1-3 with a narrow black 
comb along their inner edge; terminal dorsal segment deeply 
emarginate. Genital armature (Pl. XII. fig. 38): lateral 
lobes stout, long; median lobe drawn out into a long, 
slender, sinuate point, which is armed with a sharp, back- 
wardly-directed tooth at the tip above. 
