88 A. WATSON 



end of the cell. The male genitalia are also diagnostic (particularly the uncus and 

 the broad lateral lobes of the diaphragma). 



Distribution. Sumatra. 



Type. Holotype^, S. Sumatra, Mt. Tanggamus, 2100 m., 11.vii.1934 (Toxopeus). 



Nordstroemia ochrozona (Bryk) comb, n., stat. n. 



(Pis. 9, io, figs. 349, 353, 354) 

 Albara duplicata ochrozona Bryk, 1943 : 20. [Good fig.] 



This species is probably indistinguishable externally from duplicata, but is not 

 closely allied to it. The affinities of ochrozona are uncertain : it is separable from 

 the rest of the genus by the hammer-shaped lateral process of the diaphragma and 

 by the presence of two arcuate spines, curved in places at right-angles to each other 

 at the apex of the socius. 



Distribution. N.E. Burma. 



Type. Holotype $, N.E. Burma, Kambaiti, 7000 ft., 10. iv. 1934 (Malaise) ; 

 Drepanidae genitalia slide No. 717. In Naturhistoriska Riksmuseet, Stockholm. 



Nordstroemia duplicata (Warren) comb. n. 

 (PI. 4, fig. 324 ; Text-figs. 158-160) 



Albara duplicata Warren, 1922 : 469. [Published simultaneously with olivacea Warren ; here 



selected as the senior synonym.] 

 Albara duplicata Warren ; Gaede, 193 1 : 31. 

 Albara olivacea Warren, 1922 : 469. syn. n. 

 Albara olivacea Warren ; Gaede, 193 1 : 32. 



Separable from agna, which also occurs in China and has a similar colour-pattern, 

 by the buff-edged antemedial and postmedial fascia on the upper surface of the 

 wings and by the distinctive male genitalia. Although duplicata is almost identical 

 externally to problematica and ochrozona (both described from N.E. Burmese 

 material) and not significantly unlike agna, japonica, argenticeps and other species 

 of this group (see under generic description), the male genitalia of duplicata are 

 remarkably different from these species (Text-figs. 158-160), especially in the shape 

 of socii and uncus and the spinose diaphragma. 



Warren's description of olivacea was based on specimens differing from the type 

 material of duplicata in that the ground-colour of the upper surface of the wings was 

 ' olive grey ' [now faded to pale buff], contrasting with the ' lilac grey ' [now pale 

 grey] of duplicata. The syntypes of olivacea ab. pallidior have been shown to be 

 conspecific with the type of lilacina (q.v.). 



Distribution. N.E. India, China (Chekiang and possibly Yunnan). 



Material examined. Types, duplicata. LECTOTYPE $, here selected, labelled : 

 Khasis, Nat. Coll. ; Coll. H. J. Elwes ; Albara duplicata Type^ Warr. ; Rothschild 

 Bequest B. M. 1939-1 ; Drepanidae genitalia slide No. 718 ; B. M. negative No. 

 29113. In the BM(NH). 



