96 LÉPIDOPTÉROLOGIE COMPARÉE 



ticity, as recorded in Noies on the Lepïdoptera of the Orkney 

 Islands, by the late J. Jenner-Weir {Entomologïst, Vol. XV, 

 pp. 1-3). The only butteriiy reported from the Shetlands is that 

 hardy migrant Pyrameis car dut. 



In the western islands of the Atlantic laidion has been taken, 

 among others by Mr. H. Stuart Fremlin, in abundance on the 

 moors of Lewis, the largest of the Hébrides, in the latter half of 

 June, and the beginning of July {Entomologist, Vol. XXXIII, 

 p. 36). But in the outpost island of St. Kilda, eighty miles north- 

 west from the mainland, the sole recorded butterfly is C. pam- 

 philus. 



But when we come to the mainland, it is soon apparent that 

 there is no country throughout the Western Palaearctic région, 

 where C. tiphon in its several forms may be studied more easily, 

 and more completely than in the United Kingdom. For though 

 a local insect, where it occurs it is usually abundant in favourable 

 weather. 



Throughout the northern Highlands laidion seems to be 

 generally distributed. I hâve examined a séries of maies and 

 females captured by Dr. E. A. Cockayne at Tongue almost in the 

 latitude of Cape Wrath, typical laidion, with very pale females. 

 In Caithnessshire Mr. A. Horne reports it abundant on the moors 

 from Altnabreac to Scotscalder; and in Sutherland on the west 

 side at Invershin. Towards the Atlantic coast in the same direc- 

 tion Mr. F. J. Hanbury discovered it on the desolate shores of 

 Loch Assynt, not far from Lochinver, while I hâve examples from 

 near Lairg, at the extrême south-east of Loch Shin. In the 

 county of Rossshire on the eastern side Miss Dorothy J. Jackson 

 found it common in the neighbourhood of Swordale " frequenting 

 the damper parts of the moor on July 3rd 1908 " {Ent. Record, 

 Vol. XXI, p. II 6); and at Golspie on the North Sea coast of the 

 same county the late Mr. M. A. Rollason took it " sparingly on 

 heaths, and on the damp sides of lochs in 1902 as late as July 24th. " 

 On the western side Mr. W. M. Christy encountered laidion, with 

 very pale females, in the Carron valley; a county of rough moor- 



