the genus ineis. 467 
border of both wings. Nothing is recorded of it beyond 
the bare description. 
i. tarpeia.—This species does not appear to vary to 
the same extent as many; it has an extremely wide 
range, from the steppes of South-east Russia, through 
Southern and Central Siberia to Kiackta, and, according 
to Trybom, occurs on the Yenesei River, as far north as 
latepT 
i. aello.—Very little need be said about this well- 
known species. The great variation which prevails in 
its size, ground colour, and the number and size of its 
ocelli, shows that we must be careful not to make too 
much of specific distinctions based on these characters. 
According to Frey, our latest good authority on Swiss 
butterflies, aello occurs only in alternate years, in the 
canton of Berne, in West Switzerland, in the years 
with even numbers, in Kast Switzerland in the years 
with uneven numbers. This is borne out by my own 
experience, so far as it goes; I took it in the Engadine 
in 1879 and 1885, in the Valais and Engelberg in 1884. 
Very probably, however, this rule is not invariable, and 
that some specimens may be found in the intermediate 
years. Meyer-dur, however, whose knowledge of the 
Swiss butterflies is very accurate, seems to have no 
doubt on the subject. 
. alberta, n. 8. 
go. Upper side pale grey-brown, generally with a strong fulvous 
tinge on the hind wings. Fore wing with the costa from the base 
pale grey, more or less strongly mottled with black; a rather in- 
conspicuous pale submarginal band, bearing from one to three 
round black spots or ocelli in cells 2, 8, and 5, of which that in cell 
3 is the first, and that in cell 5 the last, to disappear; sex-mark 
wanting. Hind wing with a more conspicuous pale submarginal 
band, bearing a round black spot or ocellus in cell 2 (the latter is 
sometimes wanting, and sometimes attended by a punctiform black 
spot in cells 3 and 4); fringes chequered. Under side: fore wing 
pale grey-brown, inclining to whitish round the tip, the costa and 
the cell mottled with black, the dark mottling in the cell coalescing 
in various degrees, and sometimes forming a dark transverse bar 
about the apical third of the cell; a pale submarginal band corre- 
sponding with that on the upper side, but having the ocelli more 
conspicuous, and its inner edge bounded throughout by a well. 
defined blackish line, which is angularly produced towards the 
