586 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XI. 



217. Delias euchaeis, Drury. 



Becorded from Mussoorie as " JPieris ,> epicharis, Godart, by Kollar. 

 It is very common in Dehra Dun from July to February. 

 218. Catopsilia ceocale, Cramer. 



Both true C. crocale and the dimorphic form, C. catilla, Cramer, 

 occur commonly in Mussoorie from July to October, and in 

 Dehra Dun throughout the warmer months of the year. 

 219. Catopsilia pyranthe, Linngeus. 



True C. pyranthe is not very common in Mussoorie in the rains, 

 the dry-season form, C. gnoma, Fabricius, even less so. In the Dun 

 both forms are common in their respective seasons. The larva feeds 

 in the Dun on Cassia Tora, L., Natural Order Legurninosce. 



Genus Teeias. 



Mackinnon's collection contains but few specimens of the genus 

 Teriasj so when de Niceville visited Mussoorie and the Dehra Dun 

 in September and October, 1895, that is to say, just at the end of the 

 rainy season nnd the commencement of the dry season, he set a native 

 collector to work to catch specimens of the genus, and he 

 brought in 111 specimens from Mussoorie and 120 from the Dun. 

 It would have been quite easy to have caught many thousands, as the 

 ground (especially in the Dun) was literally covered with them, a 

 hundred Terias would be seen to a single specimen of all the other 

 species of butterflies on the wing at that time. All these specimens 

 were sent to the late Captain E. Y. Watson, who has specially studied the 

 genus in the British Museum and in India, and written two highly 

 interesting papers on them in the Journal of the Bombay Natural 

 History Society, vol. viii, p. 508 (1894), and vol. x, p. 280 (1896). 

 The results of his determinations of these specimens are given below. 

 220. Teeias hecabe, Linnseus. 



This is the commonest species of the genus in Mussoorie and the 

 Dun, seventy-two specimens from the former and thirty-eight from 

 the latter having been procured. Both sexes may typically be 

 known by the outer black border on the upperside of the forewing 

 forming a large quadrate patch on the inner margin, with a well- 

 defined outer black border to the hindwing, the markings of the under- 

 side are blackish (not ferruginous); and there is no apical ferruginous 

 patch to the forewing. Many of the Mussoorie specimens are very 



