Malacoderm Genera Prionocerus and Idgia, 367 
55. Idgia atriceps, sp. n. 
Elongate, narrow, shining, finely pubescent, and sparsely 
fusco-setose ; testaceous, the head, and a small dull spot at 
the tip of the elytra, black, the antennz (joint 11 excepted), 
tibiz, and tarsi infuscate. Head rather long, the labrum 
transverse, small; eyes very large, contiguous in 3, narrowly 
separated in ?; antennze long, slender, joint 11 hollowed 
within, twice as long as 10. Prothorax longer than broad, 
about as wide as the head, sinuate at the sides posteriorly. 
Elytra elongate, densely, finely punctate. 
¢. Anterior tarsal joints with a comb along their inner 
edge; sixth ventral segment triangularly emarginate. Genital 
armature (Pl. XII. fig. 45): lateral lobes comparatively short, 
broad, sinuously curved as seen from above, hollowed on their 
lower edge before the tip ; median lobe feebly curved, drawn 
out into a long, strongly arcuate point at the apex. 
Length (excl. head), 7-74, breadth 2-24 mm. (¢ 2.) 
Hab. Burma (Bowring). 
Two males and one female. Separable from the allied 
forms with partly infuscate limbs, small apical spot, and 
long terminal joint to the antennze, by the clear testaceous 
femora, black head, and g-armature. The elytra are much 
smoother than in J, indicola from the Nilgiris, and have a 
less developed apical patch. Prionocerus (Deromma) setifrons, 
Kirsch (1875), from Malacca, an insect not identified by 
myself, must be nearly allied to the present species. 
56. Idgia varipes, sp. n. 
3g. Elongate, very narrow, shining, finely pubescent, and 
sparsely setose ; testaceous, the head, antennz (joint 11 
excepted), and tips of the elytra, the femora along their upper 
edge, and the tibie, and tarsi (the tips excepted), infuscate or 
black. Head slightly produced anteriorly, the labrum trape- 
zoidal, triangularly depressed in the middle; eyes very large, 
subcontiguous ; antenne long, slightly widening outwards, 
joints 3-10 elongate, 4 shorter than 3 or 5, 11 curved, a 
little longer than 10. Prothorax longer than broad, as wide 
as the head, constricted posteriorly. Hlytra long, narrow, 
subparallel, densely, finely punctate. 
$. Anterior tarsal joints 1-3 with a narrow comb along 
their inner edge ; sixth ventral segment triangularly emar- 
ginate, Genital. armature (Pl. ean fig. 46): lateral lobes 
rather short, almost straight, blunt at tip, closely ciliate 
