402 L. de Niceville & Di\ L. Martin — Butterflies of Sumatra. [No. 3, 



so named, but not described, in Dr. 0. Staudinger's sale list No. xxxiii 

 (1889). Wallace as viola. Wallace described T. viola from Singapore 

 and Sumatra, but pointed out that the male he described from Sumatra 

 differed somewhat from his specimen from Singapore. The latter 

 equals T. teuthras, Hewitson, teste Distant, the former T. atlita. 



135. Terinos Clarissa, Boisduval. 

 Snellen as larissa [sic], Boisduval. 



136. Terinos teos, de Niceville. 



T. teos, de Niceville, Journ. Bomb. Nafc. Hist. Soc, vol. viii, p. 41, n. 4, pi. K, 

 figs. 5, male; 6, female (1893). 



Grose Smith as robertsia. Snellen as robertsii [sic]. Hagen as robert- 

 sia, var. ? sumatrana, so named, but not described, in Dr. O. Staudinger's 

 sale list No. xxxiii (1889) as var. sumatrensis. Wallace as robertsia, local 

 form A. This species is a local race of T. robertsia, Butler, from the Malay- 

 Peninsula. Without knowing the habits of the species of the genus 

 Terinos, one would know from their rich violet-blue coloration that one 

 has to deal with true inhabitants of large forests, which never go to 

 small jungle as the foregoing Cethosice often do. T. clarissa, Boisduval, 

 is very rare, and no exact locality for it can be given except one 

 specimen from Bekantschan, as all the specimens procured were brought 

 in with numerous specimens of T. teos, de Niceville, Dr. Martin not 

 noticing the difference between these two species till I pointed it out 

 to him. T. atlita, Fabricius, occurs more in the plains, but not at a 

 lower elevation than Bindjei and Selesseh, but does not extend higher 

 than Namoe Oekor. T. teos, de Niceville, commences to appear at the 

 same places and is found as high as Bekantschan and the lower hills. 

 The butterflies are very restless, and fly round certain trees, on which 

 they rest for a moment and then fly off again, so are not easy to 

 catch, besides which they usually settle high up and fly high too. In 

 November and December both the common species appear in large num- 

 bers, while in all the other months they are only procured singly, and are 

 very worn, so Dr. Martin thinks that they may be only single brooded. 

 At Namoe Oekor in October Dr. Martin and I caught only worn females, 

 males being entirely absent, and in December of the same year the 

 collectors brought in many males and a few fresh females from the same 

 spot. Otherwise females are always rarer than the males, especially 

 that sex of T. atlita. The female of T. clarissa is unknown to us from 

 Sumatra. No Sumatran species of the genus shew the beautiful whitish- 

 violet patch on the upperside of the hindwing found in T. teuthras, 

 Hewitson, and T. robertsia, Butler, from the Malay Peninsula. 



