ON NEW AND LITTLE-KNOWN BUTTERFLIES. 321 



the " silky rufous spot at the centre of the wing " is not nearly as 

 large, in R. elcia it appears to be even larger than in R. tara ; the color- 

 ation of the upperside appears to be very similar, except that in R. elcia 

 it is far more highly iridescent, nearly as much so as in R. schistacea, 

 Moore, while in R. rhcecus it is slightly iridescent only. On the under- 

 side of the fore wing the discal band is said by Hewitson, and is figured 

 by him, to be " equal " (i.e., of the same breadth throughout its 

 length), in R. rhcecus this band tapers away to nothing posteriorly. 

 More distantly-allied species are R. orseis, Hewitson, which has a 

 somewhat different male-mark ; R. sphinx, Fabricius (=R. varum, 

 Horsfield, and figured by Hewitson under that name), R. phranga, 

 Hewitson, from Batchian ; R. chozeba, Hewitson, from Sumatra (which 

 I have not seen) ; and R. manea, Hewitson, from Celebes. These last 

 four, however, do not appear to possess a male-mark on the disc of the 

 fore wing on the upperside. 



Described from numerous examples in my collection obtained by 

 Hofrath Dr. L. Martin, at Bekantschan, at the foot of the Battak 

 Mountains in N.-E. Sumatra, one of them on 4th July, 1893, and 

 others from the Battak Mountains themselves taken in May and July. 



( To be continued.) 



