EURYMUS. 2 I 1 



These Butterflies have strong wings, and though they do not 

 rise to a great distance from the ground, the flight of E. hyak 

 is stronger, more rapid, and more sustained than that of any 

 other British Butterfly. Alpheraky has recorded that one of 

 his Cossacks galloped two miles after E. aurora, Esper, one of 

 the largest of the orange Siberian species, measuring over two 

 inches across the wings, before he could capture it. The 

 largest and handsomest species of this genus inhabit Central 

 and Western Asia. 



THE CLOUDED YELLOW. EURYMUS HYALE. 

 (Plate LX. Figs. 2, 3.) 



Papilio hyak, Linnaeus, Syst. Nat. (ed. x.) i. p. 469 (1758); 

 id. Faun. Suec. (ed. ii.) p. 272 (1764); Scopoli, Ent. 

 Cam. p. 173 (1763); Denis & Schiffermiiller, Syst. Verz. 

 Schmett. Wien. p. 165, no. 3 (1776) ; Esper, Schmett. i. p. 

 71, pi. 4, fig. 3; p. 317, pi. 26, fig. 3 (i777); Hubner, 

 Eur. Schmett. i. figs. 329-331 (1803?). 



Papilio croceus, Fourcroy, Ent. Paris, ii. p. 250 (1785). 



Papilio edusa, Fabricius, Mant. Ins. ii. p. 23, no. 240 (1787); 

 Ochsenheimer, Schmett. Eur. i, (2) p. 173 (1.808). 



Fapilio ekctra, Lewin (nee Linn.), Ins. Brit. i. pi. 31 (1795). 



Colias edusa, Godart, Enc. Meth. ix. p. 101, no. 38 (1819); 

 Boisduval, Spec. Gen. Ldpid. i. p. 638 (1836) ; Stephens, 

 111. Brit. Ent. Haust. i. p. 12 (1827) ; Kirby, Eur. Butter- 

 flies and Moths, p. 10, pi. 3, figs, ^a-d (1878) ; Newman, 

 Brit. Butterflies, p. 143 (1881); Lang, Butterflies Eur. p. 

 61, pi. 14, fig. ij pi. 16, fig. 2 (larva) (1881); Barrett, 

 Butterflies of Brit. Isl. i. p. 35, pi. 6 (1892); Buckler 

 Larv?e of Brit. Lepid. p. 9, pi. i, fig. 3 (1886). 



Colias croceus, Kirby, Cat. Diurn. Lepid. p. 490, no. i (1871). 



Colias hyak, Kirby, Cat. Diurn. Lepid. Suppl. p. 799, no. i 

 (1877). 



P 2 



