CHINESE DREPANINAE 77 



The female lectotype and a male specimen in the BM(NH) (possibly a paralecto- 

 type) differ from the externally similar duplicata, which also occurs in China, in that 

 the antemedial and postmedial fascia on the upper surface of the wings is nearly 

 uniformly brown, not edged strongly with buff. The male genitalia also separate 

 agna and duplicata. The closest ally of agna is possibly problematica (type-locality 

 N.E. Burma) which has a weakly arcuate antemedial fascia on the fore wing, more 

 strongly marked antemedial and postmedial fasciae (the former edged proximally 

 with buff, the latter edged distally with buff, then greyish brown) on both wings, 

 and well-defined subterminal markings on the hind wing. The male and female 

 genitalia of agna and problematica are diagnostic. 



Distribution. China, Szechwan province. 



Material examined. Type. I select as LECTOTYPE the $ syntype figured by 

 Oberthiir, labelled : Siao-Lou, 1900, Chasseurs indigenes ; Drepana agna $ Obthr. 

 type ; Ex Oberthiir Coll. Brit. Mus. 1927-3 ; Drepanidae genitalia slide No. 766. 

 In the BM(NH). 



Paralectotype. BM(NH). China, Szechwan : 1 <$, frontiere orientale de 

 Thibet, 1906 (Dejean). 



Nordstroemia problematica (Bryk) comb. n. 

 (Text-figs. 138-142) 



Albara problematica Bryk, 1943 : iy. [Good fig.] 



Separable externally from the closely allied agna by the characters already listed 

 under the latter species (q.v.). The chief diagnostic feature in the male genitalia is 

 the long arcuate socius spine which is greater in length than the main part of socius. 

 The colour-pattern of argenticeps (q.v.) differs little from that of problematica but 

 the male genitalia show that the two species are probably not closely allied. 



The type of/, aestivalis Bryk (1943 : 20) has been examined and found to be con- 

 specific with the type of problematica. 



Distribution. Northern Burma. 



Material examined. Type. Holotyp e cT» N.E. Burma, Kambaiti, 7000 ft., 5.viii. 

 (Malaise) ; Drepanidae genitalia slide No. 739 ; in the Naturhistoriska Riksmuseet, 

 Stockholm. 



Other material. BM(NH). Burma : 1 J, N.E. Burma, Kambaiti, 7000 ft., 

 4.iv.i934 (Malaise) ; 1 <$, Upper Burma, Htawgaw, 6000 ft. (Swann). 



Nordstroemia argenticeps (Warren) comb. n. 



(Pis. 5, 6, figs. 336-338) 



Albara argenticeps Warren, 1922 : 470. [Fig.] 

 Albara argenticeps Warren ; Gaede, 1931 : 31. 



There is little external difference between this species and sumatrana, except in 

 the shape of the postmedial fascia which is weakly sigmoid in argenticeps but straight 



