26 JOIRNAL, BOMBAY NATURAL HISTORY SOCIETY, 1891. 



NOTES ON A COLLECTION OF BUTTERFLIES MADE IN 

 THE CHIN-LUSHAI EXPEDITION OF 1889-90, 



By E. Y. Watson. 



The following collection was made from the Burmese side in the 

 Chin-Lushai Expedition of 1839-90, and so differs considerably from 

 that made from the Chittagong side, of which a list was recently 

 published in the Journal ; * in fact, I only met with forty-six of the 

 eighty-four species there recorded. 



This collection was made almost entirely in the Yaw district, 

 between October, 1889, and May, 1890, though a few species were 

 obtained at Loungat (1,500 feet) and Choungkwa (1,760 feet) in the 

 Chin Hills, during May. 



The Yaw district for the purposes of this paper may be considered 

 to begin at Pauk, about 50 miles west of Pokoko on the Irrawaddy, 

 and to extend another fifty miles west to Tilin on the Maw river 

 which forms the western boundary of the district. The Maw runs 

 due north from Tilin, falling into the Myittha after about 30 miles, 

 which latter river continues to flow north for another ] 50 miles, 

 finally falling into the Chindwin ; collections, however, were only 

 made as far as Kan, about 70 miles north of Tilin. 



Nearly the whole of the collection was made at Tilin, between De- 

 cember and May, but during November a certain number of butter- 

 flies were caught at Pauk, and along the road from Pauk to Tilin, 

 but nearly all the species then obtained were subsequently met with 

 at Tilin. During September two Native collectors from the Phayre 

 Museum, Rangoon, were employed in catching butterflies in the 

 neighbourhood of Pokoko, one of whom during October went as far 

 as Tilin, collecting en route, but returned at the end of that month 

 utterly incapacitated through fever, and I had to send him back to 

 Rangoon. The other continued to collect round Pokoko till the end 

 of October, and then accompanied me to Tilin, from which place he 

 went sick in February. It was most unfortunate his going sick so 

 early, as all the spring broods appeared during March and April ; 



* Journal, Duiiilay Natural Uiotuiy Society, Vol. v., No. 3, p. 295 (1890). 



