﻿February, 1870.] 197 



shining fuscous j labrum and palpi yellowish ; antennae pale yellowish, the basal 

 joint slightly fuscescent above. Prothorax whitish, about one-half longer than, 

 broad, slightly narrower in front ; above, with three transverse ridges, one in the 

 middle and one at each end ; a longitudinal line in the middle, which is dilated on 

 the ridges, an interrupted line on each side, and four dots, all blackish-fuscous ; 

 hairs blackish. Meso- and meta-thorax whitish, broadly blackish-fuscous in front, 

 at the sides, and under each anterior wing. Abdomen brownish, the sides of the 

 segments margined with yellowish ; terminal segment yellowish. Legs primrose- 

 yellow, with concolorous hairs. Claws testaceous, the apical half simple, the basal 

 half serrated internally, the serrations being nearly hidden in the plantula. 



Wings moderately broad, the apical margin slightly rounded, the apex acute ; 

 whitish-hyaline, with sparsely scattered brown dots, especially round the apical 

 and inner margins, two or three at the pterostigma and one on the disk being 

 larger than the others ; in the posterior wings the basal half is without dots : 

 neuration rather open, varied with whitish and brownish ; radius dotted with 

 brown ; ciliation for the most part whitish ; the gradate series in the anterior 

 wings nearly parallel. 



There are three examples in the British Museum, varying slightly 

 in the number of the brown spots in the wings. The species is allied 

 to conspersus, Walker, but has fewer dark markings on the wings, and 

 the neuration in conspersus is almost entirely blackish, margined with 

 fuscous ; the markings on the head and thorax are also differently 

 arranged. 



Osmtltts Lakgii, n. sp. 



O. piceo-niger. Anntennce flavce, articulis duobus basalibus piceis. 

 Pedes Jlavi ; unguibus intus serratis. Alee elongatce, sub-angustatw, 

 acutce, vix falcatce : anticce flavidce, punctis plurimis margaritaceis con- 

 spersce ; maculis tribus costalibus, nonnullis ad apicem , fasciaque irregu- 

 lari ante apicem et marginem dorsalem strigas ires emiltenti, fuscis ; 

 venis venulisque jiavis, nigro minute punctatis : posticce hyalince, venis 

 venulisque plerumque nigris vel nigrescenti-suffusis . 

 Long. corp. 4 — 5"' ; exp. alar. 17 — 20"'. Sab. India septent. 



In Mus. Brit, et auctoris. 

 Pitchy -black, the head somewhat shining. Palpi piceous. Antennae yellow, 

 the two basal joints pitchy-black. Eyes very large, black and shining. Ocelli 

 small. Prothorax rather short, the sides parallel ; above, with three transverse 

 raised lines, one in the middle, and one at each end (forming raised margins), 

 clothed with sparse blackish hairs. Abdomen blackish above, somewhat ochreous 

 beneath. Legs yellow, with minute blackish points and short yellow pubescence ; 

 claws serrated internally. 



Wings long, narrow, acute, the apical margin very slightly excised, giving the 

 wings a slightly falcate appearance : anterior wings washed with yellow, shining ; 

 with fuscous markings, viz., three large, somewhat quadrate, spots on the costa, 



