188 Mr. J. H. Leech on Lepidoptera Heterocera 



female from Chang-yang, and two females from Omei-shan, 

 May, June, and July. 



Distribution. N.W. Himalayas [Hampson) ; Central and 

 Western China. 



Atossa Leechi. 



Atossa Leechii, Elwes, Proc. Zool. Soc. Lond. 1890, p. 381. 



A male specimen was received from Huang-mu-chang, 

 one from Omei-shan, another and also a female from Moupin, 

 June and July. 



Hah. Western China. 



Both these species of Atosfin exhibit considerable resem- 

 blance to Delias patrua, Leech, a butterfly occurring in the 

 same localities. 



The characters given by Mr. Elwes as separating tliis 

 species from A. nelcinna appear to be constant. 



Genus Oberthuria, nov. 



Palpi porrect, hairy, extending beyond head. Antenna 

 fasciculate. Primaries witli vein 5 from just above the 

 middle of discocellulars, 6 and 7 stalked, as also are 8, 9, and 

 10. Secondaries with two internal veins and 5 from just 

 above the middle of discocellulars. Outer margin of all the 

 wings rounded; costa of primaries arched at the base. 



Type 0. Davidi. 



Oberthuria Davidi. 



Abraxas Davidi, Oberth. Ann. Soc. Ent. Fr. 1885, p. ccxxix; Etud. 



d'Entoui. xi. p. 33, pi. iii. fig. 1(3 (188G). 



Five male specimens from Moupin and one from Chia- 

 ting-fu, July. 



Hub. Western China. 



Oberthuria Jlavomarginaria, sp. n. (PI. VL fig. 7.) 



Closely allied to A. Davidi^ but differing from that species 

 in having much broader and richer yellow borders to all the 

 wings ; these borders are traversed by a series of black spots 

 and are inwardly limited by narrower black bands, the black 

 marginal spots are rounder and exhibit less tendency to con- 

 fluence ; the costal area is more deeply yellow and more 

 finely speckled with black ; on the secondaries there is no 

 black transverse bar at end of discal cell and the abdominal 

 margin is not suftused with blackish ; the body is yellower. 



Expanse 50-58 milliin. 



Three male specimens from Wa-shan, June. 



Ilab. Western China. 



