592 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XL 



249. Papilio (Pangerana) aidoneus, Doubleday. 



A single male taken in Mussoorie in April, and a few in Tehri 

 Garhwal in May. This is the first record of the occurrence of this 

 species so far to the west. 



250. Papilio (Byasa) latreillii, Donovan. 



Fairly common in May in the valleys to the north-east of Mussoorie. 

 Rothschild appears to doubt its occurrence in our area, but it does so 

 undoubtedly. 



251. Papilio [Byasa) ray ana, Moore. 



Common in Tehri Garhwal in April and May. 



252. Papilio machaon sphyrus, Hiibner. 



Very common all over the hills right up to the frontiers of Thibet, 

 where it meets and merges into the aberration P. ladakensis, Moore, 

 and flies from April to November, in the lower and warmer regions, 

 being at least double-brooded ; in the cold and higher regions it is single- 

 brooded. The tails of those from the Nilung Valley vary greatly in 

 length ; some specimens have hardly any, while others have them very 

 long, as long as in typical P. machaon, Linnaeus. In Mussoorie the 

 larva feeds on a species of Heracleum, Natural Order Umbelliferce. The 

 butterfly is found sparingly in the Dan also, from whence (" Dhoon ") 

 it has been recorded as var. asiatims, Menetries, by Felder. 

 253. Papilio (OrpJmdes) demoleus, Linnseus. 



Better known as P. erichthonius (erithonius), Cramer, in India. 

 Occasionally taken in Mussoorie ; occurs in the Giri Valley in the 

 Nahan territory in November ; and is very common in the Dan from 

 March to November. 



254. Papilio (Charus) helenus, Linnseus. 



A single male specimen taken in the Dun in April. This is the 

 most westerly point from which it has been recorded. 



255. Papilio (Sainia) protenor, Cramer. PJate W, Fig. 23, 



larva. 



Very common in the low valleys about Mussoorie in company with 

 P. pohjctor, Boisduval, from March to October. Specimens of the 

 spring brood which fly in March and April are very small as compared 

 with those of the rainy season. The larva feeds on Zanthoxylum 

 alatum, Roxb., Natural Order Rutacece, is green with a yellow collar 

 and brown lichen-like markings. Some pupae are coloured like rough 



