90 MR. W. C. HEWITSON ON NEW BUTTERFLIES. [Feb. 25, 



This species differs from T. clarissa, in the anterior wing, by 

 having a larger portion of it covered with the plush-like scales. ^ In 

 T. Clarissa they extend upwards very little beyond the lower discoidal 

 nervure. In T. teuthras they go beyond the upper discoidal nervure. 

 The two species are, however, so closely allied that I should have 

 hesitated to describe this as a distinct species if I had not discovered 

 that the third disco-cellular nervure meets the median nervure dif- 

 ferently. In T. Clarissa the lower disco-cellular meets the median at 

 some distance before the base of its second branch ; in T. teuthras 

 exactly at the base of the said branch. 



Terinos terpander, n. s, 



Alis fuscis : harum anticis versus marginem costalem purpurea 

 micantibus ; posticis magna parte dimidii posterioris fidva, 

 fascia anali nigra. 



Upper side : male, brown. Anterior wing slightly tinted with purple 

 near the costal margin. Posterior wing, without a tail, with most of 

 its outer half pale orange, traversed near the margin and the anal 

 angle by a curved brown band. 



Under side rufous brown. Both wings crossed at the middle by a 

 broad rufous band bordered on both sides with lilac-white. Ante- 

 rior wing with some indistinct rufous bands near the base, bordered 

 with lilac white, followed towards the anal angle by two other indi- 

 stinct bands ; a white spot near the apex. Posterior wing with two 

 spots, a broad band, and a narrow zigzag band, all rufous and bordered 

 on both sides with lilac white ; crossed beyond the middle by a band 

 of five brown spots, followed by a narrow zigzag rufous band bor- 

 dered on both sides with brown, by a zigzag broad band of white, and 

 by a narrow submarginal line of lilac-white. 



Exp. 2^ inches. 



Hab. Borneo. 



In the collection of "W. C. Hewitson. 



This species, which is much smaller than the others, is closely 

 allied to T. clarissa. The plush-like scales extend above the higher 

 discoidal nervure, as in T. teuthras ; the lower disco-cellular nervure 

 meets the median, nearly as in T. clarissa. 



In this genus the nervures, which are generally closely examined 

 as affording materials for generic distinction, give most valuable aid 

 in determining closely allied species. I have in this paper described 

 four new species of a genus which before contained but one, and find 

 that they all differ in the position of the disco-cellular nervules. It 

 would almost seem as if the variations of these nervures were only 

 specific, as I have before found them a valuable aid in separating 

 two very closely allied species of Callithea. 



In Terinos clarissa, the lower disco-cellular nervure meets the me- 

 dian nervure considerably before the base of its second branch. 



In Terinos terpander, the lower disco-cellular nervure meets the 

 median nearly at the same point as in T. clarissa, but somewhat nearer 

 the base of its second branch. 



