32 LLOYDS NATURAL HISTORY 



The larva feeds on hop, and on various species of 

 Polygonum and Sambucus, but will also feed on various 

 other plants and trees. It attains its full growth in Sep- 

 tember or the beginning of October. In colour it may be 

 pale or dark green, brownish-green, or quite brown, with a 

 yellowish dorsal line. The head is green or brown, and there 

 is a brownish-green quadrangular spot immediately behind it, 

 edged with yellowish. On the fifth and sixth segments are 

 two dark green triangular spots, one immediately behind the 

 other, and on the twelfth segment is a similar oval spot, suc- 

 ceeded by an elevation. Below the dorsal line are two black 

 lines on each side, and on the belly are oblique whitish streaks, 

 shaded with dark green, which extend as far as the lower lateral 

 line, and are directed forwards ; and there are similar oblique 

 lines directed backwards, above the second lateral line. The 

 belly is pale green. 



The pupa hybernates in the ground. It is shining reddish- 

 brown. The moth appears in June or July of the next 

 year. 



GENUS OLIGIA. 



Otigia, Hiibner, Verz. bek. Schmett. p. 213 (1822?). 

 Miana, Stephens, 111. Brit. Ent. Haust. iii. p. n (1829); 

 Guenee, Spec. Gen. Lepid. Noct. i. p. 213 (1852). 



This genus includes the smallest species of the Sub-family, 

 while Xylena includes the largest. The antennae are pubescent, 

 and more than half as long as the fore-wings, which are sub- 

 triangular, and rather broad ; the costa is nearly straight, and 

 the hind margin entire, gradually rounded and scarcely oblique ; 

 the hind-wings are rather broad, rounded, and entire; the 

 abdomen is rather slender, crested, and longer than the hind 

 wings. 



