138 LLOYD'S NATURAL HISTORY. 



GENUS DIACRISIA. 

 Diacrisia, Hiibner, Verz. bek. Schmett. p. 169 (1822?); 



Walker, List Lepid. Ins. Brit. Mus. iii. p, 635 (1855). 

 Euthemonia, Stephens, 111. Brit. Ent. Haust. ii. p. 68 (1828). 



In this genus, the antennae are only slightly pectinated in the 

 male; the colour is more uniform, and the abdomen more 

 slender than in most of the Tiger Moths. The sexes, too, are 

 very dissimilar, and the male is considerably larger than the 

 female, contrary to the usual rule in insects. 



THE CLOUDED BUFF. DIACRISIA SANNIO. 

 (Plate LX XXV. Fig. i.) 



Bombyx sannio, Linnaeus, Syst. Nat. (ed. x.) i. p. 506, no. 48 



(1758); id. Faun. Suec. p. 302 (1761). 

 Geometra vulpinaria, Linnaeus, Syst. Nat. (ed. x.) i. p. 520, 



no. 136 (1758). 

 ? Bombyx russula, Linnaeus, op. cii. p. 510, no. 78 (1758); 



Clerck, Icones, pi. 4, fig. i (1759); Esper, Schmett. iii. 



p. 337, pi. 67, figs. 2-7 (1786); Hiibner, Eur. Schmett. 



iii. figs. 124, 125 (1804?). 



Noctua russula, Linnaeus, Faun. Suec. p. 308 (1761). 

 Eyprepia russula, Ochsenheimer, Schmett. Eur. iii. p. 309 



(1810) ; Curtis, Brit. Ent. i. pi. 21 (1824). 

 Euthemonia russula, Stephens, 111. Brit. Ent. Haust. ii. p. 68 



(1828); Buckler, Larvae of Brit. Lepid. iii. pi. 44, fig. 2 



(1889) ; Barrett, Lepid. of Brit. Isl. ii. p. 257, pi. 74, fig:?. 



i, 10-^(1894). 

 Nemeophila russula, Kirby, Eur. Butterflies & Moths, p. 102, 



pi. 23, fig. 4 (1880). 



The species known as the Clouded Buff differs from the gener- 

 ality of Moths in that the female is considerably less than the male; 

 the latter measuring from about an inch and a half to over an inch 



