ON NEW AND LITTLE-KNOWN BUTTERFLIES. 319 



with orange ; with a narrow orange fascia running along the abdominal 

 margin from above the anal lobe to the termination of the discal 

 band ; tail black, tipped with white. Antennae, with the shaft black 

 annulated with white, the club black, the tip ferruginous. Body black 

 above, fawn-colour below. 



I place this species in the genus Hysudra with considerable doubt, 

 but do so because the coloration of the upperside is very similar to 

 that of H. selira, Moore, from the Western Himalayas, but more 

 especially because the coloration and markings of the underside are 

 almost identical. The tail, however, is twice as long as in H. selira* 

 As far as I can see, however, by the application of benzine to my 

 unique specimen, it does not possess the characteristic male Ct scale- 

 mark" of the genus Hysudra, but instead has that portion of the 

 subcostal nervure between the point where the first subcostal nervule 

 arises and the apex of the discoidal cell distinctly swollen and free of 

 scales, with a small oval area also apparently free of, or covered with, 

 colourless scales in the subcostal interspace immediately anterior to the 

 point where the first subcostal nervule arises. Without bleaching the 

 wings of a specimen it is difficult to define these characters accurately. 

 The species may be a Deudorix ; it is certainly not a Rapala, as it 

 does not possess a tuft of hairs on the inner margin of the forewing or 

 a " scale-mark " on the costa of the hindwing, which are characteristic 

 features of that genus. 



Described from a single example in my collection. 



35. RAPALA RHCECUS, n. sp., PI. P, Fig. 47, 8> 



Habitat : N.-E. Sumatra. 



Expanse : #,1*5 inches. 



Desckiption : Male. Uppeeside, both wings very rich and dark 

 slightly iridescent ultramarine-blue of a little darker shade and less 



* Is not the " Thecla " micans of Bremer and Grey, which occurs throughout Northern, 

 Western, and Central China, a Bysudra? To judge from Mr. Leech's figure of " JRapala " 

 micans, var. betuloides, Butler, in Butt, from China, Japan, and Corea, p. 414, pi. xxvii, 

 fig. 13, male (1893), I should certainly guess it to be so. To me that figure has all the 

 appearance of a large specimen of a female of E. selira, Moore, from the Western Himalayas, 

 with the orange colour of the hindwing on the upperside confined to a patch at the anal 

 angle instead of being continued along the outer margin of the wing towards the apex. 



