Genus Colias. 143 



series of specimens showing their variations and possible 

 hybrids would be of great interest. 



Colias dimera, Doubl. Hew. Gen. D. L. t. IX. fig. 3, 

 1847. 



C. erythrogramma, Koll. 

 (?) aeuxantJie, Feld. Reise. Nov. Lep., II. p. 196 (1865). 



This species, which may be easily recognised by the pale 

 colour of the hind wings, which are of a very different 

 colour from the fore wings, and by the blood-red spots and 

 streaks on the under side, which are conspiclious in most 

 specimens, is found in the equatorial Andes of New Granada, 

 and perhaps Venezuela. Specimens from Bogota are com- 

 mon in museums. 



The species described as C. euxantlie, by Felder, I 

 cannot identify with certainty in the absence of a plate. 

 It is described as being very near G. dimera, but differing 

 in the shape of the wings, and larger. There are four 

 specimens in the Hewitson collection, under the name of 

 euxantlie, from Ecuador and Peru, which may belong to 

 C. hermina or to dimera, or may be a distinct species. 

 There are also two Chilian specimens in Mus. Godm. and 

 Salv. which I cannot identify with any known species, so 

 that a more complete account of the South American 

 Coliades is much to be desired. 



Colias (Scalidoneura) hermina, Butler, P. Z. S. 1871, p. 

 250, PL XIX., fig. 5. 



This obscure species, on which Mr. Butler has founded 

 the genus Scalidoneura, appears to be very rare in col- 

 lections. 



The type specimen which I have examined in the British 

 Museum is from Peru, and is probably from the same 

 locality as two specimens in Mus. Godm. and Salv., which 

 were collected by Whiteley at Pozuzzo or Pozuzu, a branch 

 of the Ucayale Eiver, on the Upper Amazon, and situated 

 in about lat. 10° N., long. 75° W. 



It appears to be very closely allied to G. dimera, and 

 can only be recognised with certainty by the slightly 

 different branching of the costal nerve towards the apex, 

 on which, as it seems to me, insufficient character Mr. 

 Butler has founded the genus Scalidoneura. 



In all other respects it appears to be a true Colias, only 

 distinguishable from dimera by the narrower border of the 



