( vu ) 
males with a well-developed fulvous band on the upper side of 
the forewings, the band of the females tending to orange. 
The underside of the hindwings of the males black, with a pale 
transverse band varying in intensity, some very pale; the 
underside of the hindwings of the females with a dark grey 
median band, edged externally with a dark fuscous line. 
A similar series from the neighbourhood of Cortina, the 
males with the fulvous band on the upper side of the forewings 
much suffused (in some practically obsolete); the specimens 
rather smaller in size than the Mendel individuals. The band 
of the females paler orange than the Mendel specimens (two 
females with the band suffused). The underside of the hind- 
wings of the males almost uniformly black, with scarcely any 
trace of pale transverse band; the underside of the hindwings 
of the females almost unicolorous whitish grey with a 
strongly-developed marginal row of ocellated spots. The under- 
side of the Cortina females contrasted strongly with that of 
those from Mendel. 
2, Erebia glacialis ab. alecto from various localities. 
3, Erebia lappona. A long series from Campiglio, Pejo, the 
Falzarego Pass, the Nuvolau (Cortina), and The Engadine. 
4, E. euryale. Two drawers from various localities exhibit - 
ing different races from the Val Ferrex (Mont de la Saxe), 
Campiglo, Mendel Pass, Toblach, Falzarego Pass, &c., and 
extending from perfectly black specimens (without fulvous 
bands or spots) to female specimens indistinguishable from 
typical Z. ligea. 
5, A series of £. ligea, chiefly from the neighbourhood of 
Cortina, where no intermediates between this species and 
extreme specimens of ab. (et var.) ocellaris were to be found. 
6, A series of Hrebia ethiops chiefly from various localities 
in the Tyrol. 
In the ensuing discussion Mr. Verran called attention to 
the necessity, which these exhibitions showed, of working with 
large numbers of specimens, and to the facts mentioned by 
Mr. Elwes as to species being perfectly distinct from each 
other in one part of their range, and not in another. The 
results which had been arrived at by study of the genitalia 
amply fulfilled Mr. MecLachlan’s prediction, made in 1872, 
