ON NEW AND LITTLE-KNOWN LEPTDOPTERA. 185 



first median interspace, and extending slightly into the interspaces 

 exterior and posterior to it ; the posterior one lying along both sides 

 of the suhmedian nervure. Hindwing with the costa, outer and ab- 

 dominal margins alone fuscons, the rest of the wing shining deep 

 brownish-ferruginous ; the anal lobe ferruginous ; the tail black, 

 tipped with white. Underside, hotli wings dtill fuscous ; two rather 

 widely separated narrow whitish lines at the end of the discoidal cells ; 

 a somewhat broad catenulated discal band of a slightly darker 

 shade than the ground, outwardly defined on both sides by a very fine 

 white line. Forewing has the discal band straight, commencing 

 close to the costa, ending on the submedian nervure ; the tuft of 

 hairs attached to the inner margin towards the base of the wing and 

 turned under and forwards small and pale fuscous. Hindioing has 

 the discal band very irregular, posteriorly recurved to the abdominal 

 margin ; the usual round deep black spot slightly crowned with 

 ferruginous in the first median interspace; the submedian interspace 

 between the discal band and the outer margin slightly irrorated with 

 black and white scales; the anal lobe deep black crowned with fer- 

 ruginous and white ; anterior to the lobe is a short outwardly 

 ferruginous, then black, and then white fascia ; the usual fine black 

 anteciliary line inwardly defined by a fine white line from the anal 

 angle to about the middle of the wing. Female. Upperside, both 

 wings shining fuliginous. Hindwing with the anal lobe as in , the 

 male. Underside, hoth wings whitey-brown, the disco-cellular 

 markings and discal band as in the male but more prominent ; an 

 indistinct submarginal lunulated fascia. 



Nearest to R. rhodojns, de NicevillOj described above, but differing 

 greatly in details, though superficially very similar. 



Described from a single pair in the collection of Hofrath Dr. L. 

 Martin taken in the Battak Mountains in February, 1894. 



30. RITRA AURBA, Druce, PI. T, Fig. 45, 9 . 



Sithon av.rea, Druce, Proc, Zool, Soc. Lond., 1873, p. 352, n. 12, pi. xxsiii, fig. 1, male. 

 Ritra aurea, de Niceville, Butt, of India, vol. iii, p. 411 (1890). 



Habitat : Borneo (Druce); Perak (de Niceville) ; N.-E. Sumatra. 



Expanse : $ , 1-7 inches. 



Description: Febiale. Upperside, /bre-tfj/np' dull dark ferruginous; 

 the base dusted with fuscous ; the apex widely and the outer margin 

 decreasingly fuscous. Hindioing fuscous, the middle of the wing 



