Genus Colias. 141 



C. erafe is a puzzling species, which, though distinct 

 enough in Southern Russia, appears to have a tendency for 

 crossing with other species, such as Edusa and Hyale. 



From Candahar Mr. Butler has recently described no 

 less than four supposed species and varieties (see P. Z. S. 

 1880) nearly allied to this; but, after examining the 

 specimens in question, I can only say that I entirely fail 

 to follow his distinctions. Those which he calls Erate, 

 from Candahar, agree closely with examples from South 

 Russia and the Punjaub. 



What he calls Heliclita of Lederer has in the male more 

 of the orange tint of Edusa, and may, as Avas originally 

 supposed, be a hybrid between it and Erate. What he 

 calls Sareptensis, Stand., seems identical with the form of 

 Hyale, found in the Himalayas, China, and Japan, under 

 the names of Simoda, De I'Orza ; PoliograpJms, Motsch.; 

 Pauens, Butl., &c. 



Of what he calls Pallida, Stand., the female seems like 

 Hyale, or a pale female of Erate, and the male a small 

 specimen of the latter species. 



Colias Leshia, Fabr. Ent. Syst. iii. i., 208, 652 ; Butl.. 

 Cat. Fabr. PI. XL, fig. 2, 1870 ; Burm. 

 Desc. Phys. Eep. Arg. Vol. V., p. 95. 



C. pyrrothea, Hubn. Exot. Schm. Zutr. ii., 28, 183, 

 fig. 365, 366. 



C. Jieliceoides, Capron. Ann. Soc. Ent. Belg. t. XVII. 13. 



This species, first described by Fabr. from a ? specimen 

 in the Banksian collection taken in the Straits of Magellan 

 during his voyage with Cook in 1790, is common, according 

 to Burmeister, all over the Argentine Republic, from the 

 Straits as far north as San Paolo in S. Brazil (Rodgers in 

 Mus. 'Godman and Salvin), 



The females vary, but not enough, according to Bur- 

 meister, to allow them to be considered asfsub-species, the 

 males being very similar. One ? from Coralitos, Entre 

 Rios, in Mus. Godm. and Salv., is as dark, and almost 

 exactly similar to the ? of Bleadii, while others are pale, 

 like the var. Helice of Edusa. 



The caterpillar lives on 3Iedicago sativa, according to 

 Burmeister. Two male, specimens of this species in Mus. 

 Godm. and Salv. are marked Chili (Reed), but as it is not 

 included in his work, I conclude they are from Menuoza, 

 or some locality on the east side of the Andes. 



