1 



64 COLIAS. By J. Robee. 



Berz) (25 d), from North-East Siberia (Wilui), has less developed dark markings and the underside is paler. — 

 vitimensis. vitimensls Aust., found on the Witim (at its confluence with the Lena), is larger, being pure white without 

 yellowish tint; the underside of the hindwing grey-greenish in cf and grey-yellowish in ?. 



phicomone. C. phicomone Esp. (25 e), from the Alps, Pyrenees, and the mountains of Hungary, is >-ellow above 



in o"^, with very dark scaling, the entire coloration having a dark greenist tint; the margin dark, the yeUow 

 submarginal spots more or less developed, but often partly absent; middle spot of forewing black, of hind- 

 wing j'ellow or reddish: costal and distal edges of forewing and the entire edge of hindwing rosy red; 

 head and antennae red. Forewing beneath white, more or less j^ellow at apex ; hindwing yellow, proximally 

 dark scaled, the middle spot often double, mother-of-pearl colour, with red edge, which is sometimes produced 

 distad into a streak. The ? impure white above, with reduced but more sharply defined dark markings; 

 geesti. underside paler. — ab. geesti Neuburger is uniformly black, apart from the yellow submarginal band and 

 elegans. the yellow middle spot of the hindwing. In ab. elegans Schultz the forewing is uniformly grey, the sub- 

 marginal spots being scarcely visible, and the red middle spot of the hindwing above is enlarged. — Larva 

 stout, cyhndrical, dark green, velvety, finely punctured with black; a white lateral stripe bearing the black 

 spiracles which are situated in j-ellow spots; venter and legs green; head globular, yellowish green, with 

 minute hairs; feeds on various species of vetch in May and June. Pupa acuminate at both ends, convex 

 posteriorly on the back, dark green with a dull yellow lateral stripe. The butterfly is on the wing in June 

 and August. Occurs sometimes in two broods. 



montium. C. montium Oberth. (25 f), from South-Western China, Nan-shan and Tibet, is perhaps only a well 



marked form oi phicomone. The cf is yellow above, the inner portion of the forewing not being darkened 

 and the yellow submarginal spots being rather sharply defined. The imderside, especially of the forewing, 

 is more yellow, the hindwing, moreover Ijearing, yolk-coloured subapical spots and posteriorly black sub- 

 marginal ones. The ? is lighter above, the hindwing is darker proximally, and the Kght distal margin 

 contrasts with the disc. 



sieversi. C. sieversi Gr.-Grsh. (25 e), from the Sarafshan and the North-Western Pamir, is in the c/ yellow 



above and below, with greyish black distal margin, shghtly darker submarginal band and black middle spot 

 to the forewing, the distal marginal marking of the hindwing being vestigial. Underside of forewing yellow, 

 with a black pale-centred middle spot and small ])lackish submarginal spots; hindwing dusted with dark 

 scaUng, the middle spot being mother-of-pearl colour, edged with reddish. Fringes reddish. The cf is 

 white above and below, being slightly yellowish; distal marginal markings strongly reduced. 



alpherakii. C. alpherakii Stgr. (25 e, f), from the Sarafshan, Southern Fergana, the North-Western Pamir and 



Eastern Buchara, is Lighter or deeper yellow above, with well developed and sharply defined black marginal 

 and submarginal markings and black middle spot on the forewing; the hindwing with reduced marginal 

 mai'king, sometimes without any, the fight-coloured middle spot being very feebly developed; upperside of 

 forewing sometimes more or less dusted -with black along the veins. Underside fight yellow, with large 

 black middle spot, and more or less developed lilack submarginal spots posteriorly on forewing; hindwing 

 dusted with dark on the inner area, this scaling sometimes extended to the margin, the middle spot being 

 whitish. The ground-colour of the ? is lighter, the black markings are less developed, being very diffuse 

 especially at the distal margin of the forewing; the black middle spot, however, large. Beneath, the apex 

 roschana. of the forewing bright yellow and the hindwing dusted with grey greenish. — roschana Gr.-Grsh., from 

 Roshan in the North-Western Pamir, is smaUer, and the hindwing has a dark distal marginal band. 

 sifanica. C. sifanica Gr.-Grsh. (25 f), from Amdo and the Kuku-nor, is pale sulphur-yellow above in cf, with 



darkened base, diftuse dark marginal and submarginal markings and black middle spot. Antenna red. 

 Underside with lighter ground-colour than upper, but dusted with dark, the dark markings xevy feebly 

 developed, the middle spot of the forewing being black with white centre, and that of hindwing white. 

 The ? impure white above, the dark markings more sharplj- defined, the hindwing being j-ellowish. The 

 proximal portion of the underside of the forewing is white; the hindwing has a larger and a smaller white 

 middle spot, the ground-colour being lighter than in the cf, dusted with grey greenish scaling. A darkened 

 form of this species is being sold as nebidosa, but is not identical with the following species. In this form 

 tancrei. horn the Kuku-nor, which we name ab. tancrei (25 f), the black marking are more developed and the 

 proximal area of the forewing and hindwing is so strongly dusted with dark that there remain only narrow 

 streak-like spots of the yellow ground-colour. 



nebulosa. C. nebulosa Oberth. (26 f), from South-Western China, is much darker than sifanica; the forewing 



without middle spot, but with light spot at the distal margin; the hindwing almost uniformly black, with large, 

 conspicuous, light yefiow middle spot, and light ray-like spots on the veins. We regard nebulosa as a distinct species. 



diristophi. Q, christophi Gr.-Grsh. (= wiskotti Stgr. ?) (25 g), from Fergana, the Sarafshan, and the Alexander 



Mts. , has quite an exceptional aspect among Colias, the costal basal area having a pecuhar reddish brown 

 colour, and the submarginal spots of the forewing being extraordinarily large and almost white, forming a 

 continuous band which is traversed bj- the narrowly black veins. The hindwuig is dark, feebly greenish. 



