A lE^lSlOK OF TliE OEIEKTAL llESPEEJID^. 199 



vein 6, and in the latter the basal portion of vein 5 in the fore wing recedes from 

 vein 6, so that vein 5 arises much nearer to vein 4 to vein 6. The palpi are porrect 

 in both species. 



The two species may be distinguished as follows : — 



1 (2). Male with a tuft of hair near the middle of the dorsum of the 



fore wing below. Vein ] a of fore wing deflexed to the dorsum 



near the middle. Hind wing below with small pale spots . . . at kinsoni, Moore, 



2 (1). No such tuft in the male, vein 1 a of fore wing straight. Hind wing 



below divided into a pale basal and a dark apical area, the 

 boundary between these being in a line from the apical third of 

 vein 8 to the apical fourth of vein 1 b and somewhat angutated 

 in or near cell 7 vindhiana, Moore. 



! Arnetta atkinsoni. 



Isoteinon atkinsoni, Moore, P. Z. S. 1878, p. 693, pi. xlv. fig. 10; Elwes, Trans. Ent. Soc. Lond. 



1888, p. 455, pi. xi. fig. 9, S ; Watson, Hesp. Ind. p. 77, 

 Isoteinon subtestaceiis, Moore, t. c. p. 844; Watson, t. c. p. 78. 

 Isoteinon khasianus, Moore, t. c. p. 693 ; Watson, t. c. p. 78. 



Hah. Sikkim {Elwes) ; Khasias [Hamilton) ; Nagas, Burmah [Boherty). 



Atkinsoni varies in the ground-colour of the hind wing below and the development 

 of the pale spots thereon ; in typical examples the latter are well marked, but they are 

 sometimes entirely absent, and many intermediate states occur : the unspotted or faintly 

 marked examples {subfestaceus, M.) were regarded by Moller as the spring brood, and 

 Watson got atJcinsoni only in August and subtestaceiis only in April. Watson says 

 (P. Z. S. 189-3, p. 82) that in the males oi atkinsoni and suhtestaceus there is attached 

 along the basal half of the inner margin of the fore wing a tuft of longish hairs, which 

 are turned up and spread out fanwise over the underside of the hind wing. In the 

 male specimens of atkinsoni before us there is on the dorsum of the fore wing, 

 from a point distant about one-fourth from the base of the wing to a point about the 

 middlle of the dorsum, a fringe of long black hairs, which form a tuft pointing 

 in the direction of the tornus and covering the middle portion of vein 1 a, which is 

 deflexed so as to touch the dorsum, and is there thickened and channelled. 



! Arnetta vindhiana. (Plate XVIII. fig. 24, 6 .) 



Isoteinon vindtiiana, Moore, P. Z. S. 1883, p. 533; Watson, Hesp. Ind. p. 84. 

 Isoteinon nilgiriana, Moore, 1. c. ; Watson, 1. c. 

 Isoteinon modesta, Moore, t. c. p. 534 ; Watson, 1. c. 



Hah. Jubbulpore [Jide Moore) ; Nilgiris (Hampson) ; Mhow, Matheran (Jide 

 SiuinJwe) ; Travancore (z'm coll. Rothschild). 



2 i>2 



