360 Mr. G. C. Champion on the 



Hah. Ceylon, Kaudy ((?. E. Bryant : vi. 1908). 



^'el•y like J. dhnelcena, Walk., l)ut with the autennfe and 

 legs in great part, and the lal)rum, infuscate or black, the 

 apical patch on the elytra as large as in /. melanocephala, 

 tiie head small, the labrum short and suharcuate, tlie pen- 

 ultimate antennal joint subserrate. /. cyannra cannot be 

 satisfactorily included under /. assimUis or /. melanura, and 

 as these latter are not known from Ceylon, a name is 

 required for it, even in the absence of the male. /. sub- 

 inetallica. Pic (1911), also from Kandy, is similarly coloured 

 above, but it has the under surface metallic. 



44. Idgia dimelana. 



Thaccona dimelcpna, Walk. Ann. & Mag. Nat. Hist. (3) iii. p. 260 



(1859) [sub CEdemeiidae] \ 

 Idgia cardoni, Bourg. Compt. rend. Soc. Eut. Belg. xxxv. p. cxli 



(1891) (d $) ', and Ann. Soc. Ent. Belg. xxxvi. p. 237 (1892)^; 



Gorh. op. cit. xxxix. p. 319 (1895) *. 



(J. Anterior tarsal joints 1-3 with a black; comb along 

 their inner edge ; terminal dorsal segment narrowly, deeply 

 excised in the middle (the notch much deeper than in ? ), 

 appearing bilobed at tip ; sixth ventral segment triangularly 

 eniarginate. Genital armature (PJ. XII. fig. 36) : lateral 

 lobea very long ; median lobe very elongate, almost straight 

 from near the base, the apex abruptly drawn out into a long 

 slender curved point. 



Hab. S. India [W. Davison), Bombay, Malabar {Mus. 

 BnY.), Kunbir Nowatoli^, Mandar^* {sec. Bourgeois) , Bel- 

 gaum ^, ]Madura {H. E. Andreives), Anamalai Hills [H. L. 

 Andreives) , Nilgiri Hills (H. L. Andreives, Sir G. F. Hamp- 

 son) ; Ceylon ^ [Thivaites, G. Lewis). Colombo {H. P. 

 Green), Madulsima {F. B. Fletcher), Hapulahani [Mus. 

 Brit.), Kandy (G. E. Bryant). 



A common insect in Ceylon and Southern India, females 

 greatly preponderating in the long series before me. One 

 of Walker^s types from Ceylon and a Nilgiri example have 

 been dissected, and these show a precisely similar genital 

 armature in (^ . The wholly testaceous labrum, antennae, 

 and legs, the slender antennae, and the simple posterior 

 femora in rj , are its chief characters, but there are several 

 very similar forms in the same regions. Tlie apical black 

 })atch varies in size, but it is never very small. The length 

 (excl. head) ranges from 9-10^ mm. The eyes are large 

 and subcontiguous in ^ , the head is rather small, and not 

 much elongated anteriorly, and the antennae are slender. 



