BETEEOCERA OF SIKEIM AND BHUTAN. 631 



tion of the same in their sections according to Hampson requires some 

 alteration, I now give a key to the genus. 



Section I. — Hindwing with the stalk of veins 6 and 7 short. 



(a) Antennae of male bipectinate, with branches moderately long 



and reaching the tip. 

 F. argentifera, Moore. 



(b) Antennae, of male with the terminal one-third serrate ; the 



branches shorter. 

 F. ocypete, Brem. 

 F. variegata, Moore. (Fide Hampson). 



(c) Antennae of male with small fascicles of cilia. 



F, brunnea, Moore. 



F. obliquiplaga, Moore. (Fide Hampson). 



(d) Antennae of male with short stiff branches with fascicles of cilia 



at their extremities. 

 F. apicalis, Moore. 

 Section II. — Hindwing with the stalk of veins 6 and 7 very long ; 

 antennse of male with branches long. 

 F. tenebrosa, Wlk. 

 F. viridinota, Hmpsn. 



Genus StauropuSj Germar. 

 260. S. macvlatus, Moore, 

 Sikhim. I do not know this. (Taken at Darjeeling at light in 

 July.— H. J. E.) 



261. S. alternus, Wlk. 



Sikhim. One specimen reared from a larva taken at 900 feet 

 elevation in the bed of the Balasun river in October. The larva differs 

 from Hampson's description only in the presence of paired conical dorsal 

 prominences on the fourth and fifth somites, and the flattened portion 

 of the tenth somite being produced laterally into a hooked spine ; the 

 processes from the extremity of the anal segment are long and clubbed. 

 Pupa formed in a yellow silk cocoon. Food plant a thorny tree locally 

 called Kayer. Emerged in November. 



262. S. sikhimensis, Moore. 

 Sikhim. I have only obtained it in July at 5,000 feet. Mr. Elwes 

 says it is common at light in Darjeeling in July and August. 



