112 EREBIA. By G. Eitfinger. 



entirely red-browii with only the distal and hind margins and the base remaining dark. The brown colour 



is also on the hindwing more extended than in the cf, but does not reach to the cell. The short antenna 



iisgentensis. grey-white with the club black. — The form usgentensis >^tgr., so named because it occurs at Usgent in 



Turkestan, the hindwing is so thinly dusted with white that the dark brown ground-colour comes through. — 



magna. Especially large specimens of this Turkestanian form are sold as ab. magna Stgi: — On the other hand 



progne. small specimens which are hardly half the size of nj'motypical rtir/ians, are named progne liy Gruii- 



Grshimailo. The upperside is uniformly russet-brown apart from the dark margins, the hindwing beneath 



being grey-black. From the north-side of the Transalai. — rridinnii occurs at a considerable height in the 



Pamir and the mountains of Turkestan; the butterfly settles frequently and has a sluggish and low flight. 



In June and July, locally very abundant. 



sibo. E. Sibo AlpJicr. (37 i). The wings above dark black-brown, sometimes with narrow brown longitudinal 



streaks, which are pointed distally and are quite obsolescent, being occasionally altogether absent in the cf, 

 while they are nearly always more or less distinct in the somewhat ligiiter ?. Underside of the forewing 

 of the cf dull russet-brown, the costal margin, apex and veins being dusted with grey. The hindwing 

 beneath grey- brown, mixed with white -grey, all the veins being scaled white. The dark brown transverse 

 band is distally strongly sinuous and here limited by a number of grey-white spots. Along the distal margin 

 there is a band consisting of brown tooth-like spots. In the ? the underside of both wings much lighter than 

 in the (f in consequence of the strong increase of the white-grey scaling; the brown longitudinal streaks 

 of the upperside are but feebly indicated on the forewing beneath or there are only small vestiges of them. 

 The hindwing beneath still more densely dusted with white, sometimes the whole wing being shaded with 

 white-grey, only the brown median band and the dentate band at the distal margin remaining visible and 

 contrasting sharply with the white-grey colour. The antenna black-brown above, white-grey beneath, the 

 tip of the club being red-yellow. The ? always smaller than the cf : the latter varies in size from 43 to 

 65 mm; while the ? mostly measures only 42-44 mm. — In the Kuldja district, Tian-shan, up to 10000 ft. 



ocnus. E. ocnus Ev. Similar to /appoim Esp. Forewing sombre black-browu with dark costal and distal 



margins. The brown-red central area sometimes divided by the dark veins into brown longitudinal streaks 

 or even entirely darkened apart from slight vestiges at the distal margin. The black submarginal eye-dots 

 have the same position as in luppoiia, but are mostly smaller than in that species or are even absent. The 

 dots are not visible beneath. The forewing beneath with the central area russet-brown and sometimes the 

 costal and distal margins sparsely dusted with white, which scaling, however, may be absent. The under- 

 side of the hindwing more or less dusted with grey, the median area often bordered by two thin dark 

 mongolica. dentate lines. In the Alatau. — In mongolica AVscA. the ground-colour of the hindMing beneath is more 

 densely dusted over with white, the dark median band therefore being more prominent. From the Tian- 

 thianchanica. shan. — In ab. thianchanica Alpher. the underside of the hindwing has a greenish tint and the markings 

 traversed by whitish veins. Likewise from the Tian-shan. 



lappona. E. lappona Esp. (= manto Fn-., zilia Bkh.) (37 i). Upperside of both wings black-brown, somewhat 



glossy, the ground-colour of the ? lighter, moie grey-brown. The forewing with a rather broad russet- 

 brown band which does not reach the hindmargin and bears 4 black oceUi without pupils, the 2 upper 

 ones standing close together and being somewhat shifted proximad. The band is not always equally distinct, 

 varying in several directions. The hindwing has 3 — 4 IHack ocelli in russet -brown rings or is entirely 

 unicolorous without markings. The forewing beneath with the central area russet -brown, the costal and 

 distal margins being dusted with white-grey or bluish white, and the hindmargin black-brown. The ocelli 

 as above, but mostly placed in russet -yellow rings. The hindwing beneath whitish or bluish grey with a 

 median band which is bordered both proximally and distall}- by a thin brown dentate line. In the ? this 

 median band is more or less dusted with brown, the dentate lines being darker and broader and the band 

 therefore more prominent than in the ?. Before the distal margin there are 2 or 3 black dots which are 

 sometimes absent. Head, thorax and abdomen black, the last ashy grey beneath. Antenna brown above, 

 grey beneath , with yellow club. In the Pyrenees , Apennines , Alps and Carpathians , mostlj' only at con- 

 pollux. siderable altitudes. — In ab. polIux Esp. (= dubius Fuessl, aglauros Hbst., baucis Schk.) the underside is 

 dusted with white-grej' , without markings ; singly among the nymotypical form , in Graubiinden and in 

 castor. Fiumark. — ab. castor Esp. (=: pandrose Bkh.) has the ujjperside duller in colour, bearing 2 subapical 

 dots; the very evenlj' leaden-grey underside of the hindwing is traversed bj' 2 sharply marked black-brown 

 dentate line. An insignificant aberration, which perhaps flies everywhere in the Alps among nymotypical 



sthennyo. specimens. — In the form sthennyo GrasL, which occurs in the Central Pyrenees, the distal band of the 

 forewing is not russet-brown but yellowish red, being proximally but indistinctly or not at all defined. The 



stelviana. ocelU bordered with yellow rings above and beneath. — In ab. stelviana Gumpp. the forewing has no ocelli 



above. From the Tirolese Alps, but occurs as aberration almost everyAvhere among njniotypical speciniens. — 



mantoides. In the northern form mantoides Btlr. the ocelli of the forewing beneath are contiguous, forming a chain. — 



The Central -European mountain-form as well as the arctic form, however, vary so much individuallj' that 



nearly all the aberrational forms occur in both districts. — Larva adult grass-green; head, a dorsal line, 



