LÉPIDOPTÉROLOGIE COMPARÉE 109 



Middle Form of Cœnonynipha tïphon. I hâve had an opportunity 

 of looking over some hundreds of examples from varions localities 

 in this région, and though hère as elsewhere, occasional spécimens 

 suggest the more brightiy coloured, and ocellated Southern Form; 

 and, more rarely, pale spécimens are reminiscent of the Northern, 

 it is clear that thèse are rather the exception than the rule. Round 

 Carlisle, the tendency to develop intermediates is, however, 

 somewhat pronounced. My correspondent, Mr. F. H. Day, 

 diagnoses his séries of Cumberland examples {Trans. Carlisle 

 Nul. His t. Soc, Vol. I, 1909) as follows : 



" An examination of my séries (ail Cumberland spécimens) 

 leads me to classify them as follows : (i) The typical form which 

 is the commonest form I hâve; (2) A form intermediate between 

 the type and var. laid ion; (3) A form intermediate between the 

 form and var. phïLoxenus. Thèse two intermediate forms contain 

 examples which lean very closely to laidion, and philoxenus respec- 

 tively. 1 hâve two spécimens in particular, which are quite as dark 

 as philoxenus, but which hâve not the ocellation strong enough to 

 be that form. The Bowness Moss spécimens are mostly the form 

 intermediate between the type and philoxenus. Todhills produces 

 the type and the two intermediate in about equal numbers, and 

 the Bolton Fell siDecimens are mostly typical with a few leaning 

 to laidion. " 



Elsewhere the butterfly is recorded by Mr. Day, and other 

 compétent authorities from " Orton, and Newby Cross on a pièce 

 of common at the Dalston end of the woods; Wedholme Flow, 

 Wigton; Gelt Wood, Hayton Moss, and Tindale Fell; Keswick, 

 rare on Ullock Moss, and near Watendlath, on the Rosthwaite 

 road; Kirkbampton Moss, common; and abundant on a moss at 

 Wan Fell " (^Loc. cit.), and practically wherever there is ground 

 suited to its habits. ^ 



In the form of tiphon, then, it reaches right down by Penrith 

 to mid-Westmoreland, where it gives way to philoxenus; until in 

 the mountains of North Wales a redder, and altogether more richly 

 coloured form of the type re-appears. 



