RHYAGIA. By W. Waeren. 39 



and distinct: marginal third sometimes darker: hindwing of ■f white, of ? ochreous grey, smoky gvey 

 along termen. Ural Mts.. Russia. 



R. romanovi Chr. (12c). Forewing sulphur yellow; upper stigmata as in lutescem, but reddish romanovi. 

 brown: outer and submarginal lines reddish brown; marginal points and tips of cilia reddish: hindwing 

 yellowish ochreous. Armenia. 



R. dizyx Piing. (8f). Forewing (cf) ochreous grey; the upper stigmata quadrate, white; costa and dizyx. 

 base whitish: claviform indistinct, with a dark spot at its apex; ¥ dull chalk-white; a square spot between 

 stigmata, another at base, and the praesubmarginal shade fuscous; hindwing fuscous. Tibet, Kuku-Nor. 



Section IV: Antennae of o* serrate or subserrate, with sessile fascicles of cilia. 



R. musiva Hbn. (8f). Forewing grey-brown with a reddish tint; costal area broadly cream-white musiva. 

 to outer line; the edges of the two stigmata also cream-white, ' their centres grey; the cell and a blotch 

 below it at base black brown, like the upper part of shoulders; lines all indistinct; hindwing cream-white, 

 the veins and apex grey; fringe yellowish white. In Europe this species extends from S. Russia through 

 Hungary. Austria and Germany to Switzerland and is wide spread through Asia, occurring in Armenia and 

 Asia Minor, in the Altai Alts, in Siberia, W. and E. Turkestan, Mongolia and Amurland. — Larva mottled 

 yellowish brown and dark, with oblique subdorsal streaks; the lines dark; on various low r plants. 



R. clarivena rihuj. (12 d). Like musiva, but the median vein of forewing is finely white, and the clarivena. 

 lundwins is yellowish fuscous instead of white. Kuku-Nor, Tibet. 



j & 



R. exoleta Leech (8 e). Forewing dull yellow with an olive tinge ; a small patch at base of costa exoleta. 

 and a larger blotch at its middle purplish brown , the latter comprising and obscuring the two upper 

 stigmata: claviform a small dot; the ordinary lines obsolescent; submarginal pale between two brownish 

 shades: hindwing yellowish white, the veins and fringe yellow; head and thorax brown; face and tips of 

 palpi yellowish. W. China. 



R. glareosa Esp. (= decempunctata 17//., hebraeica Hbn., I-geminum Dup.) (8f). Forewing pearly glareosa. 

 grey, with fine dark dusting; cell before and beyond orbicular stigma velvety black brown; subbasal and 

 inner lines marked each by a black spot on costa and another below median vein ; outer and submarginal 

 hnes pale; hindwing whitish, dusted with grey, especially in ?. — The species is confined to Europe, in 

 the South being found in X. Spain, France, Italy, the Tyrol and Switzerland; also in Germany, Belgium, 

 Denmark, Sweden, and the British Isles in the North ; — the form edda Stgr. (= suffusa Tutt), occurring in edda. 

 the Shetland Islands is dai'k, with forewing red-brown and the hindwing dark brown; — rosea Tutt rosea. 

 (= var. A. Guen.) is lilac grey suffused with rosy; — limbata Gouin, from the Gironde in France, has the limbata. 

 forewing tinged with bluish green , and the marginal area darker than usual. — Larva pale brown , darker 

 along the sides; the dorsal and subdorsal lines pale, dark-edged; spiracular line ochreous yellow; on all 

 kinds of low plants. 



R. castanea Esp. (= laevis Saw.) (8g). Forewing pale grey, with a more or less general rufous castanea. 

 tinge; Hnes and stigmata all obscure; lower lobe of reniform dark; hindwing fuscous; anal tufts of abdomen 

 of cf reddish. — In the ab. cerasina Frr. (8g) the red tints predominate to such an extent that the whole cerasina. 

 forewing is dull deep red, while in ab. neglecta Hbn. (8g) the red is wholly lost and the insect is dull neglecta. 

 grey: this is the common form in Britain, where the typical castanea is rarer and cerasina unknown; — 

 the form xanthe Woodf. should have the ground-colour yellow; — ab. pallida Tutt from Scotland is whitish xanthe. 

 ochreous; the stigmata outlined in red; submarginal line formed of red spots. — The species occurs on P allllia - 

 heaths throughout Europe, where its foodplant Calluna grows. Larva varying from green to' dull pink, 

 with darker irroration ; spiracular line broadly white, the others merely pale. Hampson' records a form from 

 Syria, with the hindwing white and termen fuscous, which may well be a distinct species. 



R. descripta Brem. (-= pachnobides Stgr.) (8g). Forewing lilac grey, crossed by reddish brown descripta. 

 shades; space between subbasal and inner, and that between outer and submarginal lines, and the median 

 shade red-brown; cell dark brown; stigmata grey; claviform slight; reniform often obscured by the median 

 shade; hindwing fuscous grey, a darker ceilspot, the outer and submarginal lines showing through; the red 

 tint on the forewing is brighter in the cf. Amurland. 



R. tecta Hbn. (= ampla Hbn., carnea Tr.) (8g, h). Forewing rufous, the base, costal streak, the tecta. 

 terminal area, lines and stigmata grey; hindwing pale brown. — A boreal species, occurring in Scandinavia 

 and in Livonia , Russia. — Larva reddish brown with black striations ; segmental incisions black ; lines in- 

 distinct, except the dorsal which is finely white, edged with black; spiracles white ringed with black; 

 feeding on various low-growing mountain plants. 



R. festiva Schiff. (8h). Forewing with basal area grey, outer area red-brown; the hnes and f estiva. 

 stigmata grey; hindwing dull grey with a dark lunule and transverse line and the fringe reddish; as a rule 



