CENEIS. 
2G5 
brown, and often have white lines following the course of the 
nervures ; the marginal fringes are dark brown, chequered with 
white ; the hind margins of the fore wings are entire, those of the 
hind wings hardly at all dentated. The fore wings are rather long 
and narrow in comparison to the hind wings, and both pairs are 
somewhat thinly clothed with scales. 
There are about twelve species of this genus at present known, 
and they are almost confined to the Polar regions, or to places at a 
great elevation in lofty and extensive mountain ranges of the 
Palsearctic and Nearctic regions. The only exception to this rule 
of habitat is (E. Tarpeia, Pall., which inhabits the dry steppe-lands 
of South Eussia and Siberia ; of the four remaining European 
species one inhabits the Alps of Switverland, viz., ffi. Aiillo, Hiib., 
and the rest are only found within the Arctic circle, in Lapland 
and Siberia. Many species occur in Labrador, and others are 
found on the Eocky Mountains, in California and in Vancouver’s 
Island ; one species occurs in the Himalayas ; and two are found 
in South America, in Chili and Patagonia.* The genus (Eneis 
appears to come in as a natural link between Erehia and Satyrus, the 
first-described species, CE. Jutta, very much resembling the Polar 
Erehice, whilst the majority of the species are a good deal like the 
genus Satyrus in their colour and markings ; the habits of all, how- 
ever, remind one of Erehia more than of any other genus. 
1. — CE. Jutta, Hiib. 614-5; Boisd. Ic. 38; Dup. i. 40, 3, 5; 
H. S. 116-8 ; Wallengren, Scandin. Ehop. p. 46. 
Baldee, H. S. 384-6. 
Expands from 1*80 to 2-0 in. All the wings brown, nearly as 
dark as in Erehia Emhla, with a submarginal row of light orange 
spots, some of them enclosing black centres ; the black centre is 
nearly always present on the fore wing in the spot nearest the apex, 
and on the hind wing in that nearest the anal angle. The size and 
* The occurrence of these species affords another instance of the analogy 
between a large part of the lepidopterous fauna of Temperate South America, and 
that of the Palaearctic and Nearctic regions. Does the fact of this analogy point 
to the existence of the remnant of an ancient Antarctic fauna, or have Nearctic 
forms been extended downwards by means of the great chain of the Andes ? 
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