144 Mr. H. J. Elwes on the 



fore wings, and by the colour of the hind wing not differing 

 from that of the fore wing, as it does in Dlmera. 



There is a specimen in Mr. Hewitson's collection which 

 may possibly be the ? of this species ; but in the imper- 

 fect light of the building I was unable to detect the 

 difference in the neuration. 



Colias hyale seems confined to the Old World, no form of 

 it having been discovered in the New, though it spreads 

 over most of Asia, and has received numerous specific 

 names. 



In the British Museum collection Mr. Butler indicates 

 no less than four forms of this species, all of which he 

 considers distinct, from Japan — viz., Simoda, PoUograpJms, 

 Fallens, and another. He professes to be able to dis- 

 tinguish them with certainty, but I entirely fail to follow 

 him in doing so. Probably special training is necessary to 

 enable one to appreciate such minutiee ; but in any case it 

 would be most unlikely that in such a genus four species 

 of one group should exist in Japan alone, or rather in that 

 very small part of Japan from which collections have 

 come. 



Hyale extends to the Himalayas, to China, at any rate 

 as far as Shanghai, into South India, under the name of 

 Nilgheriensis, and is said by Layard to have occurred in 

 South Africa, though I know of no authentic specimens 

 from that country. 



C. Sag/irtia Led., from the mountains bordering the south 

 end of the Caspian Sea, seems a good species, nearly allied 

 to Phicomone, and representing it in Asia, but easily 

 distinguished by colour and size from that species. 



Colias ladakensls, Feld., Keise. Nov. Lep. II. p. 197, 

 PI. 27, fig. 8, 9, 1865. 



C.sJiipkee, Moore, P. Z.S., June 13, 1865, p. 492, 

 t. XXXI. fig. 13. 



There seems to be little doubt that these two supposed 

 species are identical, though the figure of Shipkee is not 

 good. 



There are two specimens from Ladak in Hewitson's 

 collection named 0. Vautieri ! ! ! and two others in the 

 British Museum from Tibet, apparently (^ and ? , which all 

 agree very well with Folder's plate. 



It seems to me a local race of G, Nastes or Phicomone, 

 though easily distinguished by its bright lemon colour. 



