Leucania. 163 



and there are short black longitudinal streaks between them, and at the base ; hind-wings 

 whitish, dusted with brownish. Expands about \\ inches. Common in Central and Southern 

 Europe in June, August, and September, but very rare in England. It also occurs in 

 Western Asia. The larva is flesh-coloured, with a dark double line on the back, and two 

 dark green stripes on each side. It feeds on grass, and hybernates ; and may be found 

 in spring and in July. 



21. L. Riparia (Ramb.).— Resembles L.-albuin ; fore-wings rosy-white, varied with yellowish- 

 brown, and with an oblique paler stripe at the tip ; an interrupted row of transverse dots, 

 the nervures, especially the median, rosy-white ; hind-wings brown, with the base whitish. 

 A scarce species, found in South France and Corsica in May, August, and September. The 

 larva occurs in April. 



22. L. Coiigrua (Hiibn.). — Somewhat resembles L. Obsoleta ; fore-wings yellowish-red, with 

 the median nervure dilated into a yellowish-white spot ; an oblique interrupted row of 

 transverse dots, scarcely curved, and sometimes almost wanting ; hind-wings yellowish-brown. 

 Under side of all the wings pearly-white. Common in South Europe and Western Asia 

 in spring and autumn. The young larva may be found late in autumn on the stalks of 

 maize, hidden between the leaves ; and again in summer. 



*23. L. Albipuiicta (W. V.). — Fore-wings reddish-grey or cinnamon-brown, with a small 

 white spot in the middle, and two rather indistinct dark transverse lines bordered with paler, 

 the elbowed line slightly dentated ; hind-wings brownish-grey, and shining reddish-grey beneath. 

 Expands about i^ inches. Inhabits various parts of Central and Southern Europe and Western 

 Asia in June and July, but is rather local ; in England it has only occurred at Folkestone. 

 The larva is reddish-grey, with a white line on the back bordered with dusky, below which 

 is a dark grey stripe on each side, and under this again a white, a blackish, and a yellowish 

 line. It lives on grass till May. 



24. L. Logancs (Riissl.). — Fore-wings pale yellowish, finely dusted with darker, with a white 

 central lunule, pupilled with black, a row of dark dots beyond the middle, and the nervures a 

 little lighter ; hind-wings light brownish-grey, with the base whitish. Under side of the fore- 

 wings dark grey, and of the hind-wings white, in both cases with a leaden lustre. Expands 

 about \\ inches. A little-known species, found in the valley of the Lahn. 



* 25. L. Litliargyrca (Esp.). — Fore-wings reddish-ochreous, with a pale central lunule, white 

 beneath, and two indistinct dark transverse lines, the elbowed line strongly curved ; and a 

 row of black dots towards the hind margin; hind-wings brownish-grey; the under side suffused 

 with reddish, with a row of black dots. The variety Argyritis (Ramb.), from South Europe, has 

 paler fore-wings, and the row of spots on the hind-wings is placed nearer the hind margin 

 Expands about ij inches. Common throughout Europe and Western Asia in June and July. 

 The larva, which feeds on grass till May, resembles that of Conigcra, but the black lines 

 are wider apart, and the head is reticulated with brown. {L Vnlpccnla, Eversm., from the 

 Ural, is rusty-red, with two dark transverse stripes on the fore-wings, and the orbicular and 

 reniform stigmata ochreous ; hind-wings pale reddish. 



* 26. L. Tuna (Linn.). — Fore-wings brownish-yellow, thickly and obliquely streaked with 

 rusty-brown, with two brown transverse lines, which are not dentated, and a whitish transverse 

 streak instead of the reniform stigma ; hind-wings dark grey, with red fringes. Expands from 

 li- to if inches. Widely distributed in Central and Southern Europe, but not very common. 

 The larva is thick, reddish-brown, with a white line on the back, a yellowish-brown stripe on 

 the sides, and a waved blackish line between them. It lives on grass till June. 



