Revision of the Genus Erebia, 195 
in the Sinin Alps, which I cannot find in the map but 
which I believe are farther east towards Koko Nor, and 
southwards to Ta-tsien-lo, where Leech says it differs from 
the typical specimens in the paler fascia of the forewings, 
and grayer colour of the hindwings below. Alpheéraky, 
speaking of specimens from Ta-tsien-lo, says that they are 
intermediate between the Siberian type of sedakovi and 
those from the Sinin Alps. I have specimens in my col- 
lection from the Sinin Alps sent by Alphéraky which are 
quite similar to vthiops, and I very much doubt whether 
either sedwkovi or alemena could be separated from xthiops 
if a large series were brought together. 
This seems to be the only true Hrebia found in Tibet or 
China. 
Hrebia vidlert, sp. 0. 
I describe under this name a species which is only 
known at present from specimens taken by Capt. Vidler 
on the mountains above Seton Lake, near Lilloet on the 
Fraser river, British Columbia, in July 1885. For a pair of 
these I am greatly indebted to Mr. Fletcher of Ottawa; 
though the male is in a very worn condition they afford 
sufficient material for description, which I here give. 
In size, colour and markings like #. sedakovi, of which 
at first I thought the insect might be an American variety. 
The difference in the genitalia, however, is too great to 
admit this supposition and I believe the species may best 
be placed near /igea. 
The band on the forewing above is yellow brown in 
colour and extends right across the wing enclosing three 
small dark brown ocelli; of which the two upper ones are 
white-pupilled. The band on the hindwing is shorter than 
in sedakovi, only extending about half way across the wing 
and containing two brown spots of which the upper is very 
small. 
On the underside the band on the forewing does not 
reach the costa and the band of the hindwing is very like 
that of xthiops or sedakovi. 
Erebia margarita. 
Judging from M. Oberthiir’s figure and description this is 
a very doubtful species. I believe it to be only an aberra- 
tion of neoridas without ocelli on the hindwing. I have a 
