66 



Mr. Main exhibited, for Mr. Baldock, a variety oi Euchelia 

 jacobcECB, in which the usual pink coloration was changed to 

 a dull yellow. It was taken in Norfolk. He also showed 

 three fine specimens of Papilio machowianns, a rare species 

 from Central Africa. 



Mr. McArthur read the following notes on, and exhibited 

 specimens of, Anarta cordigera from Rannoch : 



" It was in the spring of 1876 that I first made my acquaint- 

 ance with this pretty species in its natural haunts, but it 

 was a very slight acquaintance that season, for I did not 

 then know of a peculiar resting habit the imagines have, 

 and so had to depend on the net, with very poor results. 

 They are among the sharpest insects on the wing that I 

 know of, and most difficult to catch. In Scotland, so far as 

 I know, A. cordigera is confined to Rannoch, and there its 

 range is limited to the south side of the loch. Even there 

 they seem restricted to an elevation of 750 to goo feet. Of 

 course, individuals are met with above and below these 

 heights, but it is very seldom. Eastward, the abutments of 

 Shiehallion seem to stop their advance in that direction, 

 and on the west their progress is barred by the Black Wood. 

 The distance between these points is, roughly speaking, 

 about eight miles, but there are breaks in between where 

 they do not occur, the ground not being suitable for them. 

 The sloping ground on each side of the two burns at Carrie 

 are their headquarters. Here the bearberry {Arctostaphyllos 

 iiva-ursi) grows in profusion, and A. cordigera is very fond of 

 coming to gather the honey from the wax-like flowers. Even 

 then they are always on the alert, flying off on the approach 

 of anything; so one has but a poor chance of netting them. 

 If the collector had to depend on that way of getting them 

 they would still be rare in collections. Each spring the 

 keepers and shepherds burn strips of the heather, and the 

 following spring these burnt places are the favourite haunts 

 of A. cordigera. By that time the black stumps of the old 

 heath have become a dark grey, with small pieces of grey 

 lichen still attached, making, one would think, an ideal 

 resting-place for this species, for the stumps just match 

 their colouring. But A . cordigera seems an exception to the 

 rule, for they select the light-coloured granite rocks and 

 stones, on which they show up in a very conspicuous manner. 

 On a bright, sunny day A . cordigera is on the wing from about 

 10 a.m. until 3 or so in the afternoon. They then select 

 the rocks while the sun is still shining on them, and there 

 the courting takes place ; but they are still so restless that 



