RHYAGIA. By W. Wabjjen. 51 



R. isochroma Ramps. (1 1 c). Like a small homochroma Hamps., but the orbicular is a small dark isochroma. 

 spot, the renil'orm a mere dark lunule; hindwing paler. Recorded from the same locality Yatong, Tibet. 



R. violetta Stgr. (lie). Forewing elongate, pinkish grey; all the markings ill-defined; stigmata violetta. 

 pale with grey centres; lines defined by pale grey shades; hindwing dull whitish grey. W. Turkestan. 



R. alaina Stgr. (li c). Forewing ochreous, almost covered with dark olive grey irroration; the base alaina. 

 and outer margin pale grey; two upper stigmata dark with rufous outline; the cell ochreous; fringe rufous; 

 hindwing pale grey, with two outer lines and the cellspot darker; the base rufous-tinged. Turkestan. — 

 The forewing has the outer margin vertical, shortly oblique below ; the antennae of <? with cilia quite short. 



R. junonia Stgr. (lie). Forewing pale ochreous, yellower in median area; orbicular and reniform junonia. 

 stigmata slategrey, the former round, the latter narrow, angled; submarginal line pale beyond a grey shade; 

 hindwing pale grey, the fringe luteous. W. Turkestan. — The forewing has the outer margin oblique 

 throughout, the apex prominent; antennae of a" with sessile fascicles of cilia. 



R. suavis Stgr. (lid). Forewing biscuit-colour, dusted with slatyblue; lines of the same hue, suavis. 

 starting from strong costal spots; claviform stigma oval, with bluish ring; orbicular nearly obsolete; reni- 

 form diffuse; submarginal line preceded by a dentate slaty line, thickened on the folds and at costa; hind- 

 wing whitish, with traces of postmedian line and submarginal band. — Occurs in the Mountains of Mongolia. 



R. simulatrix H. G. (= nictymera Boisd.) (12 e). Forewing dirty grey with a luteous tinge ; lines slightly simulatrix. 

 deeper, edged with paler; median shade and marginal area darker grey; reniform stigma a dark lunule; 

 hindwing brownish fuscous with white fringe. The form dalmata Stgr. has the ground-colour more ochreous. dalmata. 

 Found only in France, Spain and Dalmatia in Europe; and in the Taurus Mts. in Asia Minor. — Larva 

 black, greenish below and at sides; 3 white striae on each segment above subdorsal line; feeding on 

 Festuca ovina. 



R. wiskotti Standf. Exactly like simulatrix Hbn., but yellower, with the markings darker. Taken wiskotti. 

 high up on the Swiss Alps. 



R. lucernea L. (lid). Forewing pale grey, with a green flush; lines black defined by pale grey; lucernea. 

 broad dark median and submarginal shades; orbicular stigma grey, pale-edged, generally obsolete; reniform 

 a dark lunule ; fringe grey ; hindwing fuscous , darker towards termen ; fringe white ; the cf is generally 

 blacker than the ?. A mountain species, occurring in Britain, France, the Pyrenees, Switzerland and Fin- 

 land. — The form from Scotland, to which Stephens gave the name renigera is blackish grey, much darker renigera. 

 than European examples. — cataleuca Boisd. has the dark median shade prominent. — Larva blackish, cataleuca. 

 with obscure markings; a subdorsal row of blackish dentate marks containing pale spots behind them; on 

 various lowgrowing plants. 



R. asella Piing. (= ignobilis Hamps. nee Stgr.) (lid). Forewing dark brownish fuscous, the lines asella. 

 double, blacker ; median shade prominent ; upper stigmata with fulvous rings ; hindwing fuscous. W. Turkestan. 



R. defessa Led. Allied to nictymera and lucernea; forewing luteous tinged with fawn colour; the defessa. 

 fines fine: terminal area pale leaden grey; submarginal line hardly expressed; orbicular stigma faint, reni- 

 form plainer with dark centre; hindwing dirty whitish with diffuse broad terminal shade. — Described by 

 Ledeeee from 3 ?? from Mt. Lebanon, Syria. 



R. bipartita Graes. Forewing grey-brown, with black irroration from base to beyond middle; outer bipartita. 

 area darker with a few pale scales intermixed; inner line obscure, outer plainer, nearly straight and in- 

 ward!}' oblique; stigmata plain, with fine brown outlines; hindwing dark grey with the fringe paler. Amur- 

 land. — Described by Geaeser from a single & from Wladiwostok. Perhaps near defessa Led. 



R. helvetina Boisd. (= birivia Hbn. nee Schiff., fivia Frr.) (1 1 e). Forewing uniform dull olive grey helvetina. 

 brown, the median area darker; the edges of the stigmata and the lines paler; hindwing a little paler. — 

 Found in the Mountains of Switzerland, S. France, N. Italy, Germany and Austria; also in Armenia. 



R. lucipeta Schiff. (He). Forewing dull greenish grey on a yellow ground, which shows through lucipeta. 

 in the ? as a general yellow irroration; the edges of the lines and rings of the stigmata yellow; marginal 

 line yellow; fringe chequered with yellow; hindwing yellowish ochreous suffused with fuscous; fringe with 

 basal half yellow, outer half white ; a large species , occurring throughout Central Europe and in Asia 

 Minor. This species, the type of Rhyacia Hbn., has a smoothly rounded frons. — Larva greenish grey; 

 dorsal line paler; 4 black tubercles on each segment; paler, more mixed with yellow, along the sides; 

 spiracles black; head and feet brownish yellow; — on various low plants, Tussilago, Petasites, Euphorbia. 



R. proterva Piing. Forewing ochreous grey, slightly dusted; margin beyond submarginal line paler; proterva. 

 outer and inner lines dark grey with pale edges; a dark lunule on discocellular ; hindwing dark grey. — 

 Quite a small species, from Altyn Tagh, Tibet. 



