XOTKS OX ilHX-LUSUAI BUTTFAIFL1 ESI 27 



these bring far and away the best, months. The collections made by 

 these men at Pokoko are also included in the following paper. 



Round Pokoko the country is sandy, covered with low scrub, and 

 quite devoid of big jungle; this description of country continues 

 pretty well as Ear as Pauk, and is not productive of many species. 



lievond Pauk, the nature of the country entirely changes, and the 

 greater part of the road to Tilin leads through fairly thick tree- 

 jungle. About a couple of miles from Tilin the forest changes to 

 what is known in Burma as eng jungle, the eng being a tree with 

 large shiny leaves bearing a distant resemblance to teak, the soil in 

 tliis jungle being a quartzy gravel. This description of jungle is 

 nearly devoid of life, animal or insect, almost the only butterflies 

 occurring in it being Arhopala, and these in no great numbers. 



At Tilin the collection was made almost entirely in two small 

 nullas about a couple of miles in length, which fall into the 

 Mflw ; as these two nullas were almost identical a description of one 

 will suffice. The nulla itself is a few yards wide with perpendicu- 

 lar banks nine or ten feet in height, above which the sides slope up 

 steeply to about a couple of hundred feet. However, at each bend of 

 the nulla the perpendicular bank on the inside is converted into a 

 gentle slope covered with small bushes. Here and there in the lower 

 part of the nulla are small pools, but these quite cease after the 

 first mile or so, and the bed consists of dry quartzy gravel to its 

 source. For the greater part of the way the eng is separated from 

 the nulla by a belt of bamboo and other jungle, but towards the 

 source of the stream the bamboo disappears and the eng meets from 

 cither side. The elevation of Tilin is about 1,100 feet, there being a 

 slight ascent from Pauk, which is about 800 feet, though on the 

 road between two ranges of hills are crossed, both of which slightly 

 exceed 2,000 feet. 



As already stated, the best months were March, and April, and 

 during the former month in certain places where the nulla runs 

 between perpendicular banks, the air would be thick with number- 

 less Neptes, while every step roused up dozen of Ifelanifis and Lethe 

 europa, and here and there an assemblage of Euphea and Danais 

 (chiefly E. godartii and D. mdanoides) would be seen dotting the 

 sides of the banks. In the upper part of the nulla, where water 



