142 European Butterflies axd Moths. 



localities than others. The larva is pale shining green, with two whitish lines on the back, 

 and a yellow one on the sides; it feeds on oak. The moth is figured at PI. 31, Fig. 7. 



*3. D. Dodoncra (W. V.)- — Resembles Chaonia, but very variable. It is more or less varied 

 with whitish, but may be known by the absence of cither a white or black lunule on the fore- 

 wings, and by the brownish-yellow abdomen. Rather smaller than Chaonia. It appears to 

 be confined to the western portions of Central Europe, and is not very common. The larva 

 is shining green, with two yellowish-white lines on the back, and a golden-yellow stripe on 

 the sides, sometimes spotted with red. It feeds on oak and birch. 



GENUS XVIII. — PERIDEA (STEPH.). 



The fore-wings are rather long, with the hind margin oblique, and a well-marked tooth 

 of scales on the inner margin. The larva is without protuberances. The only species is 

 * P. Trepida (Fabr.), in which the fore-wings are grey, varied with rusty-yellow, with three zigzag 

 rusty-brown double transverse stripes, and a row of rusty-brown spots before the hind margin. 

 The hind-wings are white, with the costa grey. Expands from 2\ to Q.\ inches. Widely dis- 

 tributed in Europe in May and June, but generally rather scarce. The larva is yellowish- 

 green, with a dark green stripe on the back, bordered with yellow; yellow subdorsal lines, 

 and oblique yellow streaks on the sides, bordered above with red. It feeds on oak in July 

 and August. 



GENUS XIX. — NOTODONTA (OCIiS.). 



Differs from the preceding genera in its hairy eyes. The fore-wings are tolerably broad, 

 with the hind margin slightly rounded, and a distinct tooth of scales on the inner margin. 

 The larvae, which have sixteen legs, are naked, with from two to four fleshy humps on the 

 middle segments, which are curved backwards, and a hump on the 12th segment. When at 

 rest they elevate both extremities of the body. They generally change to pupje in a cocoon 

 between leaves, and more rarely in the ground. Some species are double-brooded. 



I. N. Torva (Ochs.). — The fore-wings are brown, dusted with grey, with indistinct dark 

 transverse stripes, and a dark lunule surrounded with paler ; the hind-wings are brownish- 

 grey. Expands from if to 2 inches. Widely distributed in Central Europe, except the 

 north-west, in May. The larva, which is scarcely to be distinguished from that of Ziczac, 

 lives on aspen from June to September. 



* 2. N. Tritophus (W. V.). — I-'ore-wings dark grey, varied with rusty-brown ; the middle of 

 the costa is dusted with whitish. They are marked with dark indistinct transverse stripes, 

 and a large yellowish-brown lunule, surrounded with white. The hind-wings are pale grey, 

 with a suffused whitish stripe in the middle. Expands from i \ to 2\ inches. It is found in 

 May and June, and again in August, throughout Central Europe, but is generally very scarce. 

 The larva is dark green, with three large red humps on segments 6 to 8, and two smaller 

 ones on segments 5 and 9 ; a red streak on the back as far as the first hump, and an 

 interrupted red stripe on the sides. It lives from July to September on poplars, and undergoes 

 its tran.sformations in the ground. The moth is figured at PI. 31, Fig. 8. 



* 3. N. Dromedarius (Linn.). — Fore-wings dark grey, varied with ashy-grey and rusty-red, 

 with dark transverse stripes, bordered with paler; a small whitish central spot, with the centre 

 rust-red, and a rust-red wavy line ; the hind-wings are brownish-grey, with a pale stripe in 

 the middle. Expands from if to 2 inches. Common in Northern and Central Europe from 



