178 LEPIDOPTEBA INDICA. 



Isma 2J>'>'2'>trascens, Lophoides purpurasceos, Elwes aud Edwards, I.e. pi. 18, figs. 26, (J, 27, 9, and 



pi. 24, fig.s. 45, 45a (genitalia). Habitat, Pulo Laut, Borneo. 

 Isma hinotatus, Lophoides binotatus, Elwes and Edwards, I.e. pi. 18, fig. 28, 9 • Habitat, Kina Balu, 



Borneo. 



Genus ITYS. 



Iti/s, de Niceville, Journ. Bo. Xat. Hist. Sue. is. 1895, p. 377. Elwes and Edwards, Trans. Zool. 

 See. 1897, p. 200. 



Male. Fuvewing triangular, rather lengthened ; costa very straight ; apex acute ; 

 outer margin convex ; inner angle rather acute ; inner margin straight, considerably 

 longer than the outer margin ; costal uervure terminating on the costa well before the 

 apex of the discoidal cell ; sub-costal nervules arising at decreasing distances apart ; 

 discoidal cell long, more than half, less than two-thirds, the length of the wing, 

 narrow ; upper discocellular nervule stout, short, strongly outwardly oblique ; middle 

 aud lower discocellulars sub-erect (slightly inwardly oblique), straight, thin, the middle 

 rather longer than the lower ; second median nervule arising well before the lower end 

 of the cell ; first median arising a little nearer to the lower end of the cell than to the 

 base of the wing ; sub-median nervure straight ; a long sexual tuft of hairs attached 

 to the inner margin of the wing towards the base and turned under and forwards. 

 llindicing elongated, much longer than broad ; costa greatly arched at the base, 

 convex to the apex ; outer margin regularly rounded to the anal angle ; abdominal 

 margin straight ; costal nervure well arched, terminating at the apex of the wing ; first 

 sub-costal nervule arising long before the apex of the cell ; discocellular nervules 

 almost erect, slightly only outwardly oblique, strongly concave ; discoidal nervure 

 olisolete ; second median nervule arising a little before the lower end of the cell ; first 

 median arisiusf about twice as far from the second as the second does from the first ; 

 sub-median and internal nervures straio'ht. Antennae Ions, more than half the length 

 of the costa of the forewing, with an elongated slender club, the terminal crook short, 

 i'alpi porrect, densely hairy, third joint invisible, hidden amongst the hairs of the 

 second joint. Thorax rather stout, abdomen slender, reaching just to the anal angle 

 of the hindwing. Legs, hindleg, femur fringed throughout its length, not tufted ; 

 tibia with a single pair of long spines at its distal end. Type, Itys iad(^ra, de Niceville. 



This genus may Ije nearest to Isma, Distant, of which /. obscura, Distant, is the 

 type, a species I have not seen, aud which appears to be very badly figured (Rhop. 

 Malay, p. 36, u. 1, jjI. xxxv. fig. 19, n. 188G), nor is the sex stated of the specimen 

 described. Lieutenant Watson's diagnosis of the genus Isma was drawn up from 

 llesperia c-'.phala, Hewitson, which may or may not be congeneric with Isma obscura. 

 Iti/s is certainly very near to the genus Arnctta, Watson, Proc. Zool. Soc. Lond. 

 1893, p. 81, of which Isoteinon atkinsoni, Moore, is the type. It differs from that 



