466 Mr. N. D. Riley on 



A very constant series except as to size; 14,000 ft. 

 seems to be about the highest point this species reaches 

 in any part of its distribution. 



11. Colias berylla Fawcett. 



1907. Colias ladakensis race berylla Bing., I.e., ii, p. 236. 



1909. Eurymns berylla Swinhoe, I.e., vii, p. 169. 



1910. Colias berylla Eriiiist., I.e., ix, p. 165. 

 1912. Colias ladakensis berylla Evans, I.e., p. 979. 



2j^, 26/6/21; 1 ^, 7/7/21, Tingri, 14,000 ft. (I^.). 

 All three absolutely typical. 



12. Coiias dubia Elwes. 

 (PI. XXXVII, figs. 1-5.) 



1907. Colias dubia Bing., I.e., p. 239. 



1909. Eurynms dubia Swinhoe, ^.c, vii, p. 167. 



1910. Colias dubia Frlihst., I.e., ix, p. 165. 

 1912. Colias dubia Evans, I.e., p. 979. 



1 $, N.E. of Mt. Everest, E. of Deva La, 27/7/21, 

 16,000 ft. 



Upj)erside, fore-wing : clear orange, paler below costa, ajDex and 

 margin broadly black, the enclosed light markings paler orange, 

 not at all uniform as to size, i. e. that in area 2 by far the largest, 

 those in areas la, 4 and 5 equal and about half the size, the remainder 

 very narrow; hind-wing, similar in ground-colour, largely suffused 

 with blackish especially towards costa, but \>y no means entirely 

 black ; marginal marldngs in areas 5, 4 and 3 large and conspicuous, 

 the remainder indistinct, merged into the smoky orange of the 

 disc of the wing; discocellular spot bright orange, large. Under- 

 side : costa, apex, and outer margin of fore-wing and whole of 

 hind-wing bluish green, not yellowish, cential and basal areas of 

 fore-wing as above, discocellular spot of hind-wing small, white, 

 situated on the inner edge of a small diffuse purple patch, sub- 

 marginal series very indistinct, brownish grey except in areas 

 la-3 of fore-wing in which they are very conspicuous and black. 



This female agrees much better in all respects with the 

 ^ type of C. dubia Elwes (P.Z.S., p. 481, 1906) than does 

 the $ which Elwes then associated with his (^, and can 

 safely be assumed to be the true $ of that species. With 

 it, as C. dubia, should be associated the Colias figured by 



