TJie Scottish Naturalist. 99 



some others which are confined to mountam districts do not 

 as a rule Hve at a high altitude, so that they also cannot be 

 included in this class. 



The Lepidoptera which seem to merit the title — in Britain — 

 of mountain species are the following. (The words within 

 brackets show to which of the above-mentioned groups each 

 species belongs.) 



Ercbia Epiphron, Kn. (alpine); 

 Zygitna exidans, Hchwh. (arctic-alpine) ; 

 Pachiiobia hyperbo7-ea, Zett. (arctic-alpine) ; 

 Ana7'ta inelanopa (arctic-alpine); 



It cordigera (arctic-alpine); 

 Psodos coracina (arctic-alpine); 

 Scopjtla ttUginosalis, Stph. (alpine); 

 Scoparia alpina, Dale (? alpine) ; 



II g7-acilalis, Dbld. (? alpine); 

 Crambus fii7'catellus (arctic-alpine) ; 

 Penthina Stamtoniana, Brrt. (alpine); 



II Grevilleana^ Curt. (? alpine); 

 Sivanwierdajuia nanivoj-a^ Stt. (alpine) ; 

 Zelleria saxifrages, Stt. (alpine); 



and possibly one or two species of Neptiaila, which I will omit. 



The distribution of these species in Britain and Europe is as 

 follows : — 



Erehia Epiphron occurs in the north-west of England, in the 

 north-east and north-west of Scotland, and in the west of Ireland. 

 It inhabits grassy places on the sides of the mountains, and 

 seems to be very local, as I have gone over many parts of the 

 Scottish Highlands which seemed well suited for it, without 

 observing it— as, e.g.^ in Aberdeenshire, eastern Inverness-shire, 

 and Ross-shire. Its most northerly localities in Britain are — 

 so far as our present knowledge goes — Rannoch and western 

 Inverness-shire. Several varieties of this butterfly have received 

 names, and on the Continent these varieties have a rather dis- 

 tinct distribution. Epiphron proper has a more decided band 

 of rufous spots, and in the female the eye -spots have white 

 centres. It is found on the mountains of the Black Forest and 

 of Silesia, and, as far as I can judge, is the form that occurs 

 in Rannoch and elsewhere in Scotland. The var. Cassiope F. 

 has the rufous spots less distinct, and the eye -spots without 

 white centres. This is the most widely distributed form, occur- 

 ring on the mountains of Central Europe so far east as Hungary, 

 and also in Britain. The var. Pyrenaica, H.S., is larger, and 



