LÉPIDOPTÉROLOGIE COMPARÉE lO/ 



find that it occurs in the central part of this our largest English 

 county; nor is tiphon reported, save on doubtful évidence from 

 the adjoining midland county of Derbyshire. 



My friend Mr. A. S. Tetley of Scarborough sends me the 

 following account of tïfhon in the North Yorkshire localities 

 quoted : — 



" I take this species in small numbers every year on the North 

 York Moors. The locality is close to the Scarborough and Whitby 

 high road, about 13 miles from the former place. It consists of 

 a small " moss " about 300 yards long by 50 broad. The ground is 

 covered by big round tussocks of Air a cœspitosa and Rhynchospora 

 alba, with narrow channels between them, generally very damp and 

 often partly filled with water. The dominant plant is Myrica gale, 

 which seems to overpower the two common Ericas and Callima 

 2'ulgaris in the " moss " itself ; though just beyond on some rising 

 ground the heaths re-assert themselves. There are four or five 

 small birch trees. Other plants to be found are Hydrocotyle, 

 cranberry, one or two Junci and some others, more or less casual. 

 There are a few patches of Eriophorum. So far I hâve not dis- 

 covered on the moors a locality at ail like this one in surface and 

 plant association. 



" The résident lepidoptera are few but of considérable interest. 

 C. tiphcn is very strictly con&ned to the actual " moss ", and 

 particularly to the central part, which is sheltered by a plantation 

 flanking the full length of one side. Brenthis selene and C. pam- 

 philus are the only résident butter Aies. Of moths the most inte- 

 resting is Crambus margarilelbis, which is as localised there as 

 C. tiphon. Bïacrisia sanio, Pliisia interrogationis, and Anarta 

 myrùlli occur every year, while Bombyx callunœ breeds throughout. 

 Acidalia fumala is the only résident Geometer. 



" My dates for C . tiphon are as follows : 



1904, i6th July. First discovered. Very worn. 



1905, 25th June. cT's only; very fresh. 

 1907, I4th July. Both sexes fresh. 



