76 BRITISH BUTTERFLIES 
ocelli. Varieties occur in which the ocelli are more or less obliterated, and in the males the dusky edging of the 
wing is more decided than in the females. 
The caterpillar feeds upon Cynosurus cristatus, and is found at the beginning of May and August. It is 
greenish, with a dusky line down the back and a pale line down each side. The perfect insect is found abundantly 
on heaths and dry pasture lands, appearing at the beginning of June and September. Moses Harris also states, 
that there is a brood in April, making three in the course of one year. 


OREINA *, Westrwoop. 


This genus is distinguished from the other British species of Hipparchiides by having none of the veins of the 
wings dilated at the base. The antenna are slender, with a more or less globular or pyriform club. The eyes 
are naked, the palpi having the wings varying in shape, the anterior being either rounded or elongate, and the 
posterior denticulated or entire. The fore feet in the males of Blandina are very small, so as not to be visible 
among the hairs of the breast, and very densely hairy ; those of the female, on the other hand, are comparatively 
long, quite visible, slender, naked, and with the tarsal portion articulated. 
This genus, to which Boisduval inappropriately applied Dalman’s generic name of Erebia (which is a 
synonyme of Hipparchia or Satyrus) is composed of species for the most part natives of mountainous districts ; 
hence I have applied to it a name derived from the Greek in allusion to this habitat. The Continental species 
are very numerous and very difficult to determine. Boisduval states, that they exclusively inhabit the Alpine 
mountains, and the mountain districts of central Europe, being but very rarely found on the plains, except where 
the vegetation has an alpine character. They are not found on the mountains of the north of Europe (where they 
are replaced by the species of Chionobas), nor on the mountains of the south of Europe. They constitute 
Duponchel’s ninth and last group, named from the same circumstance Alpicoles ; which that author suggests may 
be formed into two divisions, from the entire and denticulated wings: indeed by Stephens they are, from this 
circumstance, separated into two groups, forming his sections C and D of Hipparchia. The species with 
denticulated hind wings are termed Epigea by Hiibner, whilst those with entire wings are his Melampias. 
DESCRIPTION OF PLATE XXIII. 
Insects.—Fig. 1. Oreina Ligea (the Arran brown Butterfly) female. 2. The male. 3. Showing the under side. 4. The Caterpillar. 
a Fig. 5. Oreina Blandina (the Scotch Argus B.) male. 6. The female. 7. The under side of the English variety, male. 9. The 
under side of the Scotch variety, male. 8. The under side of the English variety, female. 10, The under side of 
Scotch variety, female. 
Prants.—Fig. 11. Poa Glauca (Glaucous Meadow-grass). 
ry Fig. 12. Poa alpina (Alpine Meadow-grass). 
Ihave been enabled from the fine cabinet of Mr, Stephens to enrich the present plate with a variety of specimens illustrative of the distinctions 
of the Scotch and English varieties of O. Blandina. It will be seen that, in the English specimens, the light band on the hind wing is ashy grey, 
broad in the female, and narrow in the male, and that in the female the grey band is repeated towards the base of the wing. In the Scotch 
specimens, the light band on the hind wing is yellowish brown in the female, and in the male almost invisible, from being scarcely lighter 
than the ground colour; whilst the secondary band is nearly obliterated in both sexes. I regret much not being able to figure the caterpillar of 
this species, but hope some of our subscribers will enable us to supply the deficiency before the completion of the work. H.N.H. 

* From the Greck ’Opewds, montosus, from the species generally frequenting mountain districts. 
