THE BUTTERFLIES OF MUSSOORIE. 381 



155. Catochrysops cnejus, Fabricius. 

 Not common iu our area ; occurs in the Dun only in October. 

 156. Catochrysops pandava, Horsfield. 



The rains' form, true C. pandava, occurs in Mussoorie in August 

 and September ; the rains' form flies in the Dun in August, and the 

 dry-season form, C. bengalia, de Niceville, in October and November. 



157. Tarucus theophrastds, Fabricius. 

 Very rare in Mussoorie in September, very common in the Dun 

 in May and from July to November, and is highly seasonably dimor- 

 phic, the dry-season form found in May being the T. alteratus of 

 Moore. 



158. Tarucus telicanus, Lang. 



Not common in Mussoorie in May and August ; more numerous in 

 the Dun from April to December. It is better known in India as 

 T. plinius, Fabricius, but Lang's name has four years' priority. 

 159. Castalius rosimon, Fabricius. 



Found in Dehra Dun only ; commonly in April and May, and 

 in October and November. 



160. Polyommatus bceticus, Linnaeus. 



Occurs in Mussoorie and the adjoining districts in vast numbers 

 from March to June, apparently migrating in March to the north- 

 westward. The Mussoorie specimens vary greatly in size. Found 

 also commonly in the Dun. 



161. Iraota tjmoleon, Stoll. 



Not rare in Mussoorie from April to September, and in the Dun in 

 the latter month in large numbers on pomegranate bushes, Punka 

 Granatum, L., Natural Order Lythracece. In Kanara the larva has 

 been found to feed only on the bark of Ficus ghmerata, Roxb. 



162. Surendra quercetorum, Moore. 



Decidedly rare in Mussoorie in August, but in the Dun it is very 

 common all the year round, in sal forests especially. The female has 

 been observed ovipositing on a thorny bush, a species of Acacia, 

 Natural Order Leguminosce. 



