the genus Erehia. 341 



E. embla, E. dim, and E. fasciata are boreal forms 

 of wide range, and though nearly allied and variable in 

 size and ocelli, are distinguished by constant characters, 

 so far as I have seen. E. rossi may be distinct, but it is 

 so rare that I cannot say so, and the only specimens I 

 have seen look like an arctic variety of disa, to which 

 also mancinus seems to belong. 



E. cydopius and tristis are excluded from the genus 

 Erehia by Von Gumppenberg, who says they are nearer 

 to Satyrus dry as and actea, but I do not see any reason 

 for separating them myself. 



E. ero and edda are two little-known species from 

 Eastern Siberia, of which I know too little to speak with 

 certainty. They are both distinguished by white spots 

 on the under side of the hind wings. E. ero, from the 

 figure, might be perhaps a form of disa, but I have 

 never seen a specimen. 



We have now a small number of eastern species which 

 appear to form a transition to the genus Caller ehia, 

 Butl., which represents the genus in the Himalayas and 

 China. They are principally distinguished by the 

 different shape of the hind wings, but I have not been 

 able to detect any structural characters upon which a 

 subgenus could be defined, and they are not very nearly 

 allied among themselves. 



E. myops is a very distinct species, which differs in 

 the colour of the hind wings below from any other ; it 

 seems to occur both in the mountains and in the steppe 

 or low hills which border it in North Persia. 



E. maracandica, E. kalinda, and E. shallada form a 

 group which, from the material at present existing, 

 seem distinct species, but maracandica and kalinda may 

 be connected by other varieties which probably occur in 

 the region of the Pamir. 



E. mani is another inhabitant of the highest regions 

 of Central Asia, and is inseparable, I believe, from the 

 form named jordana by Staudinger ; but roxane, of which 

 I have only seen three specimens, though closely allied, 

 has a red patch on the hind wings, which may indicate a 

 distinct species or variety. 



E. hades is another fine species, which might perhaps 

 be placed near tristis. 



Whether saxicola is a good species or not I cannot 



TRANS. ENT. 800. LOND. 1889. PART II. (jUNE.) 2 A 



