HiPTELIA MeSOGONA. I 77 



from I to I J inches. Widely distributed in Central Europe and Northern Asia. The larva is 

 uniform green, and feeds on low plants. 



*3. D. Ypsilon (W. V.). — Fore-wings dark greyish-brown or rusty-brown, the orbicular and 

 reniform stigmata converging beneath, and the subterminal line forming two short angles below 

 the middle ; hind-wings brownish-grey. Expands from \\ to l^ inches. Common throughout 

 the greater part of Europe and Northern and Central Asia. The larva is greyish-brown, with a 

 whitish stripe on the back widened at the incisions, light subdorsal lines, and a reddish-grey stripe 

 on the sides. It feeds on poplars and willows, and hides itself by day in the fissures of the bark. 



GENUS XXXVI. — HIPTELIA (GU£N.). 



Stout-bodied moths, the fore -wings triangular, with the tips pointed, the hind margin .slightly 

 curved, and the fringes rounded ; the Noctita-^^dXi&xxv present. The antennse are long and pecti- 

 nated in the male, the tongue is strong, the thighs are woolly, and the abdomen extends a little 

 beyond the anal angle of the hind-wings. The commonest species, H. Ochreago (Hiibn.), has 

 yellowish fore-wings, with indistinctly double and slightly dentated transverse lines, the three 

 stigmata and the inside of the subterminal line finely bordered with rusty-brown, the reniform 

 stigma blackish below, and the hind-wings dusted with grey. Expands about \\ inches. A 

 mountain insect in France, Switzerland, and Italy, occurring in July and August. It sometimes 

 flies by day, but may also be attracted by light in the evening. H. Miniago (Freyer), from South 

 Russia and the Altai, is reddish-ochreous ; fore-wings with all the lines paler, and not dentated, 

 the stigmata filled up with brown, and the orbicular stigma oblique, and a row of black dots on 

 the nervures beyond the subterminal line ; hind-wings whitish. 



GENUS XXXVII. — MESOGONA (BOISD.). 



Large stout-bodied moths, the fore-wings broad, with the costa straight, the hind margin 

 a little oblique, and the fringes scarcely waved. Fore-wings brownish, with two straight transverse 

 lines converging towards the inner margin. The two large stigmata are surrounded with paler, 

 and the claviform stigma is absent ; the hind-wings are reddish-grey. The antennje are not 

 dentated ; the palpi are thick, and hairy below ; the thighs are woolly, and the abdomen is stout, 

 and extends for one-third of its length beyond the anal angle. The larvae are slender, with 

 scattered hairs, and a horny plate on the back of the neck. They feed in May and June, and hide 

 themselves during the day, and the moths appear in August and September. The latter expand 

 about 1 1 inches. 



1. M. Oxalina (W. V.). — Fore-wings violet-brown ; the transverse lines, which are straight and 

 very close together, the subterminal line, which is bordered in front with black spots, and the 

 borders of the stigmata all pale yellowish. Inhabits the various parts of Central Europe, but 

 scarce and local. The larva is pale brown, with a lighter line on the back and a blackish one on 

 the sides, bordered below with yellowish-white ; head brown, and a plate behind black. It lives 

 on alders and poplars. 



2. M. AcetosellcB (W. V.). — Fore-wings reddish-ashy ; the transverse lines divide the inner 

 margin into three nearly equal portions, and are, like the borders of the stigmata, whitish ; the 

 subterminal line is indicated by a row of black spots. Widely distributed in Central Europe, but 

 scarce and local towards the north. The larva is dirty flesh-colour, dusted with blackish, with a 

 dull greyish-yellow stripe on the back, and the head and a plate behind brown ; it feeds on oak. 

 The moth is figured at PI. 33, Fig. 12. 



30 



