﻿196 L January, 1870 



ultwiogrue toto, nigris ; unguibus piceis, intus serratis. Alee albido-liyalince, 

 confertim nigro-guttatce, venis plerumque pterostigmatequeflavo-albidis. 

 Long, corp, 5 — 6'"; exp. alar. 19 — 20'". Sab. Trebizond. 



In onus, auctoris, necnon Dom. De Selgs. 



The whole body, including the antennae, eyes and ocelli, intensely black, the 

 head much polished, the other parts duller ; abdomen clothed with moderately long 

 cinereous hairs, especially at its apex. Head with the crown very convex, not 

 sulcated in front, the ocelli prominent ; palpi piceous, the terminal joint tipped with 

 black. Legs yellow, moderately pubescent ; the coxae, four first tarsal joints at the 

 apex, and the last joint entirely, black ; claws blackish piceous, stout, finely serrated 

 internally ; plantule simple. 



Wings broad, the apical margin rounded; whitish-hyaline, thickly covered with 

 large and intensely black spots. In the anterior wings there are about 25 — 30 

 more or less rounded spots, some of those on the costa being confluent, and thus 

 forming transversely elongate, cuneiform dashes; the margins are regularly spotted, 

 the disc with two irregular longitudinal rows, those placed on the two rows of 

 gradate veinlets often united into interrupted transverse streaks ; in the posterior 

 wings the discal spots are less numerous. The margins (especially the costal) 

 and all the veins are strongly ciliated with black. The longitudinal and most of 

 the transverse veins and veinlets in the basal half of the wings are whitish yellow, 

 except where they traverse the spots, when they become black ; most of the 

 gradate veinlets and of the longitudinal apical veins are black (but the first five 

 gradate veinlets in the outer series are white in the middle, even although they be 

 placed in the black spots) ; the sector about 10-branched in the anterior wings : the 

 pterostigmatical region in all the wings is slightly tinged with yellowish. 



This beautiful and striking species was collected in 1869, at 

 Trebizoud, by M. Th. Deyrolle. In structure it is much like 

 O.fulvicephalus (chysops, Auct.J, but has shorter and broader wings, 

 with the apical margin slightly rounded, instead of slightly excised ; 

 hence the apex is less produced. The net-work of the wings is rather 

 more open, and the series of gradate veinlets more parallel. 



OsMTLUS LINEATOCOLLIS, n. Sp. 



0. albidus. Caput fusco nigroque varium ; antennis, labro,palpisque 

 Jlavo-albidis. Prothorax albidus ; supra lined media longitudinali, strigd 

 utrinque interrupted, punctnque quatuor nigro-fuscis. Meso- et meta-thorax 

 ad latera anticeque nigro-fusci. Abdomen brunneum, pilis fiavis vestitum. 

 Pedes pallid 'e flavi ; unguibus testaceis, intus ad basin serratis. Alcealbo- 

 hyalincs, punctis fuscis conspersce. 

 Long. corp. 4'" ; exp. alar. 14-|— 15^'". Sab. India septent, 



In Mus. Brit. 



Whitish. Crown of the head whitish, with a large cordate swelling, in which 

 is an irregular, transverse, blackish groove, and behind this a transverse, polished, 

 brown ridge, dilated in the middle and at each end ; front whitish, varied with 



