32 



Gynandromorphous specimens occur occasionally. One of the 

 most remarkable aberrations of a butterfly I have ever seen was .a 

 male specimen of E. euphenoides captured by Mr. Raine at Hyeres. 

 It was devoid of orange on both wings, and the ground-colour was 

 quite a different tone of yellow. The specimen is in the Raine Collec- 

 tion at the Natural History Museum, Newcastle-on-Tyne, and is well 

 worth an inspection by any one interested in " varieties." The cater- 

 pillar feeds chiefly on Biscutella didyma, and the butterflies delight to 

 rest on its flowers. It is never double-brooded. Euchlo'e eupheno is 

 often confounded with this species ; it is an African butterfly, and is 

 probably only a form of euphenoides. 



Euchlo'e pyrotho'e is quite an Eastern species, and i» recorded from 

 the mountains of Orenburg, on the confines of Persia. 



Zegris eupheme is a South Russian species, and occurs in the Crimea ; 

 the variety meridionalis occurs in Southern Spain. 



Leucophasia sinapis is a very generally distributed species in 

 Europe. I have never been abroad without meeting with one of the 

 broods ; I have found it throughout Switzerland, at Digne, the 

 Riviera, and in Corsica. The Continental specimens, especially from 

 the south, appear to be rather larger than British examples. 



Leucophasia duponcheli is a well-defined species, and seems to have 

 rather a limited area of distribution. I have taken it at Digne, and 

 at about 1500 feet in the mountains at the back of Nice. 



The second brood of this butterfly, var. osstiva, closely resembles 

 the second brood of L. sinapis. I find the best way to separate the 

 species which occur together is to examine the antennae. In sinapis 

 the under side of the club is white, and in duponcheli brown. 



I have referred very briefly to the last species in this paper, which 

 specially refers to the genus Thais and Euchlo'e. 



