214 ? L. de Nicevillu — List of the Batterjiies of Ceylon. [No 3, 



marked with purple-biown spots. These characters are due to senson, 

 the first occurring in the wet, tlie second in the diy-senson. Watson 

 keeps I. cingalensis and I. pirenasm distinct, the former having the 

 yellow ground-colour of the fore wing on the uppers ide of tlie male 

 entering the second median interspace and filling the angle at the origin 

 of the second median nervule, while in the second the yellow ground- 

 colour does not enter the second median interspace, and he ssijs that 

 I. pirenassa is not found in Ceylon. Certa.inl}'' Ceylon has only one 

 species of tlie group of I. pyre7ie, Linnasua, but whether or no tlie 

 Ceylon form can be always separated from the parent form is in our 

 opinion extremely doubtful. Butler in his Revision of the Butterflies 

 of the Genus Ixias (1898) has given J. cingalensis as tlie sole species 

 of the pyrene group from Ceylon. He notes " I. cingalensis can be 

 picked out at sight from a crowd of nearly allied forms, but the distinc- 

 tion given above [by Watson] is useless as a guide ; its chief peculiarity 

 is the narrowness and angularity of the orange belt across the forewing 

 on the upperside in the male combined with the sharply defined and 

 perfectly straight inner edge of this belt from the subcostal nervure 

 to the first median nervule." He restricts I. pyrene to China, giving 

 J. sesia, Fabricius, from Burma. I. pirenassa he records from Western 

 India southwards to Depalpur. Watson restricts T. pyrene in India to 

 Burma not extending west of Assa.m. In Ceylon I. cingalensis is found 

 commonly all over the low country, and is peculiar to tlie island. It 

 has not been bred. 



155. Ixias marianne, Cramer. 



Common in the hot dry conntiy, not found above sea-level, and 

 flies in June and October. It is found also in peninsular and continental 

 India, and has been bre 1. The rainy season form is much larger and 

 darker than the dry-season form. 



156. Teuacolus amata, Fabricius. 



Moore as Idmais m,odesta, Butler. Moore records it from the low 

 country, found abundantly in the Dambool District and north of it, 

 also at Hambantota and in the Mullaitivu District. Manders got it 

 commonly but worn in August at Anaradhapura. The female is 

 dimorphic, Form I being salmon-coloured like the male. Form II being 

 very pale primrose-coloured or almost pure white. It occurs in Africa, 

 Arabia, Syria, Persia and many parts of India. Its transformations are 

 known, the larva feeding on Salvadora. 



157. Teracolus eucharis, Fabricius. 



Moore as Galloi>nne eucharis. Dr. Moore gives no exact record of 



