356 Mr. G. C. Champion on the 
labrum transverse, flattened ; eyes very large, narrowly 
separated ; antenne unusually elongate, slender, widening 
outwards, joint 11 nearly twice as long as 10, concave. 
Prothorax slightly wider than the head, longer than broad, 
sinuate at the sides posteriorly, rugulosely punctate. Elytra 
very long, a little widened posteriorly ; densely, rugulosely 
punctate, with an indication of raised lines on the disc. 
Anterior tarsal joints 1-3 with a black comb along their 
inner edge. Terminal dorsal segment broadly subtruncate 
at tip. Genital armature (Pl. XII. fig. 32): lateral lobes 
moderately long; median lobe sinuate, drawn out into a 
downwardly-curved point at the tip. 
Length (excl. head) 8, breadth 24 mm. 
Hab. Cruyton (Mus. Brit.). 
One male, received at the Museum in 1875. A very 
narrow, elongate insect, with the antenne unusually 
lengthened and infuscate from near the base to the tip, the 
black apical patch on the elytra occupying nearly the apical 
half. A somewhat similar form was found by Wallace at 
Sarawak. J. semitecta might easily be mistaken for a Tele- 
phorid of the genus Rhagonycha. It is allied to I. dimelena 
and other somewhat similarly coloured species with simple 
posterior femorain g. Prionocerus (Deromma) redtenbacheri, 
Kirsch (1875), from Malacca, which is said to have a 
broader apical black patch than J. melanura, seems to be an 
allied form. 
39. Idgia melanocephala. 
Cantharis melanocephala, Fabr. Sp. Ins. i. p. 260 (1781). 
Idgia ceylonica, Pic, L’Echange, xxvi. p. 76 (1910). 
** QO, testacea, capite elytrorum apicibus tibiisque nigris. Habitat 
in Coromandel. Mus. Dom. Banks. Magna. Caput cum an- 
tennis atrum immaculatum. Thorax marginatus, testaceus, 
immaculatus. Elytra levia, testacea, apice nigra. Abdomen 
testaceum. Pedes nigri femoribus testaceis.” [ Fabricius. | 
¢. Anterior tarsal joints 1-3 with a narrow comb along 
their inneredge. Genital armature (Pl. XII. fig. 33): lateral 
lobes moderately long, broad, feebly sinuate ; median lobe 
with the apical portion very long, narrow, compressed, 
abruptly curved downward at the tip, and armed with a 
sharp tooth before the apex above. 
Hab. S. Inp1a, Coromandel (coll. Banks), Bangalore 
(Mus. Brit.) ; Ceyton (Ff. B. Fletcher), Hapulahani (Jus. 
Brit.), Wadduwa (Pic). 
