122 THE ENTOMOLOGIST. 



is a wide mountain region between this district and the frontier 

 at Fuenterrabia. But he appends to the list of butterflies the 

 remark that of the local spenes P./eist/iamelii, R. cieo])atra, and 

 T, telicanus are the only three suggestive of a south European 

 fauna. From its occurrence so far north-west it is clear, there- 

 fore, that feisthamelii can exist, and supersede the type under 

 other than meridional conditions. Elsewhere on the Spanish 

 side of the central Pyrenees, as Lord Kothschild informs me, 

 we find the same jihenomenoii, e.g. above Cauterets, and in the 

 Valee d'Arrazas, otherwise d'Ordesa, from Gavnrnie, cited by M. 

 Oberthur (' Lepid. Compaiee,' fasc. v, Aragon, legend to pi. 

 m.c). Larralde (' Catalogue des Lei'idopteres des Basses-Alpes,' 

 1895, }). 19) does, indeed, mention a single example of " var. 

 (sic.) smaller than the type resembling fetsth<imelii,'' taken at 

 Guiche, in the valley of the Adour, about fifteen miles east of 

 Bayonne ; but that is the only record known to me of a western 

 form approaching feisthamelii. 



There seems no geograpJiical reason, however, why the 

 Spanish form should not extend northwards, for M. Eondou's 

 latest contribution to our knowledge of the butterflies of the 

 Pyrenees includes the ca{)ture of Melmiargia lacJieds (another 

 Spanish butterfly) in the Basses-Pyrenees at Oloron, where it 

 flies in company with M. galatea, but at a later date than that 

 when galatea first appears. This record is of special interest, 

 not only because it demonstrates the western penetration of the 

 Pyrenees by M. licheHis — hitherto only reported from the 

 Pyrenees- Orientales and as far north as the Pont du Gard — but 

 because it goes to confirm the specific distinction of two very 

 closely-allied insects. In a footnote to Mr. McClymont's observa- 

 tion of galatea at Le Vernet I ventured to suggest a re-examination 

 of the siiecimens taken by him, as hitherto the concurrence of the 

 two species there has not been satisfactorily established. On 

 the other hand, there is no question that somewhat further away 

 from the mountains on the frontiers of the same Department but 

 actually in Au(ie, they fly together. M. Bene Obertlmr informed 

 me in 1915 that near Cepie, thirteen miles south of Carcassonne, 

 in the valley of the Aude, he discovered an area of intermixture 

 where also galatea develops a special and characteristic form. 

 Another pomt of contact, this time actually within the borders 

 of the Pyrenees Orientales, is suggested by M. Oberthiir's remark 

 ('Lepid. Comparee, fasc. iii, p. 344) that examples of galatea 

 from the forest of Boucheville are in his collection. This forest 

 is situate on the borders of the Departments of Pyrenees-Orlen- 

 tales, and Aude, in the extreme north-west of the former, and 

 between Fenouillet on the eastern and Axat on the western side 

 of the line. Hitherto, British lepidopterists do not appear to have 

 touched this particular locality, but I notice that the late Mr. 

 A. S. Tetley (" South Pyrenees in Early June," 'Entomologists' 



