on the genus Colias. 21 



In Greece, however, Staudinger records neither species, 

 and in Asia Minor only Hyale. 



At Lepsa and Saisan, in Central Asia (c/. Staudinger 

 in Stett. Ent. Zeit., 1881, pp. 260—279), both Erate 

 with pallida, and Hyale with Sareptensis, are found, and 

 it is said that the pale females of Erate cannot be surely 

 distinguished from those of Hyale. 



In Afghanistan (see Proc. Zool. Soc, 1880, p. 409) 

 all these forms occur mixed together, and Major Eoberts 

 takes Sarei^tensis and Erate in copula, as is only natural 

 that he should do, if, as I believe, they are merely one 

 and the same species. 



In North Persia also the two forms, Erate and Hyale, 

 with their pale varieties, occur, according to Christoph 

 Haberhauer and Bienert. 



In the Himalayas we have them abundantly from 

 Kashmir to Sikkim. Moore, in Proc. Zool. Soc, 1882, 

 p. 254, in treating of Hocking's collection, includes 

 " Sareptensis ?, Erate ?, pallida ?," and a new species 

 which he calls lativitta. I have all these specimens 

 named by Mr. Moore himself, and can say with con- 

 fidence that they differ in no respect from specimens 

 which I have through Dr. Staudinger and others from 

 Osch and Margilan, in Central Asia, and from Sarepta ; 

 neither would it be possible to say which specimens 

 came from either locality, if the labels were removed. 



As regards the forms of Erate and Hyale found in 

 Southern Kussia and in the Kuldja District, Alpheraky, 

 in Horse Soc. Ent. Eoss., vol. xvi., gives some very 

 interesting observations. The principal facts to be noted 

 are, that in the environs of Taganrog and at Kuldja 

 the form described as Sareptensis by Staudinger is found 

 in both sexes, and is doubtless the product of crosses 

 between E'rafe and Hyale, which are often found in copidd ; 

 they are generally of the colour of Erate, but with spots 

 on the black border. 



Secondly, a^lthough, in South Eussia and the Cau- 

 casus, Alpheraky finds Hyale almost agreeing with those 

 of Central Europe in size and in the shape of the 

 border, with innumerable intermediate forms between 

 the two extremes, yet out of 2000 or 3000 specimens 

 which he examined from Taganrog and the Caucasus 

 none of the males are as pale coloured as in Central 

 Europe. He therefore doubts whether the form known 

 as Sareptensis is to be considered as a variety, an 



