RHYACIA. By W. Warken. 49 



brownish; in £ wholly brown. Occurs in W. Asia, Persia, Syria, Armenia, Turkestan, W. Siberia and 

 Kashmir, also in S. E. Russia; the form squalidior Stgr. is more brownish grey, with the markings squalidor. 



plainer: the hindwing of cf with termen brownish; — squalorum Ev. (10 i, k) is paler, the veins only of squalomm. 

 hindwing of cf being brown, and in the ? only the outer margin. 



R. putris L. (= subcorticalis Hufn., lignosa Hbn.) (10k). Forewing ochreous, the costal area, in- putris. 

 rinding cell, dark brown; dark brown patches at outer margin on both folds, the upper connected with 

 outer line by a dark double streak; inner line strongly angulated; outer represented by a double row of 

 vein-dashes: orbicular and reniform stigmata with dark centres and rings; the former small and round, 

 more rarely flattened: the latter large; hindwing whitish, variably suffused with grey. Found throughout 

 Europe, and recorded from Armenia, W. Siberia and Amurland; — the form triseriata Moore, originally triseriata. 

 described from X. India, but occurring in Japan and Corea as well, is larger and darker. — Larva speckled 

 brown, with an irregular pale dorsal line and a subdorsal row of oblique dark-greenish streaks, edged 

 below with pale ochreous ; an ochreous bar on segment 1 1 ; spiracular line pinkish or yellowish ; on various 

 low plants. 



R. ravida Schiff. (= obscura Brahm.) (10k). Forewing greyish fuscous; costal area reddish; a black ravida. 

 dash on submedian fold before inner line; cell sometimes blackish; stigmata dark-edged; orbicular very 

 variable in shape, round, or flattened, sometimes produced basewards; hindwing dull whitish, the veins and 

 termen grey. Generally distributed throughout Europe, in Northern and Central Asia, Amurland, China and 

 Japan: — ab. obducta Esp. has the whole forewing grey brown, including the costa; — and ab. bigramma bigramma. 

 Esp. is like it, but with the cell black between the stigmata; — ab. rufa Tutt is the reverse of the two rufa. 

 preceding, the whole wing being reddish like the costa, while ab. austera Esp. (= crassa Haw.), also reddish austera. 

 brown throughout , has the cell black ; — ab. suffusa Tutt is blackish fuscous with the lines and stigmata suffusa. 

 more or less obscured; — ab. valida Walk. (== nipona Fldr., cabginea Btlr.) (10k) from Japan and China valida. 

 is always larger than typical European specimens. — Larva ochreous brown, with pale dorsal line, and a 

 subdorsal row of oblique yellowish bars edged above with fuscous; feeds on a variety of low plants. 



R. stabulorum Bienert (10 k). Distinguished from ravida, which it resembles in size and shape, by its stabulorum. 

 dull rufous green tint, by the' very obscure lines, and the absence of the black streak from base ; stigmata 

 often hardly visible. Schahrud, Persia. (Christoph's figure in Rom. Mem. II, pi. 12, fig. 5 wrongly 

 shows the hindwings white; Bienert calls them fuscous.) 



R. glis Chr. (12 d). Forewing reddish brown; inner and outer lines luteous, the former denticulate, g l ' s - 

 the latter angled; stigmata concolorous or grey, with fuscous outlines; hindwing luteous grey, darker 

 towards termen. Described by Cheistoph from 2 ?? from Persia. 



R. aucta Alph. (12 d). Doubtfully distinct from squalida Guen., which is itself said to be a very aucta. 

 variable insect; — originally described from W. China, and recorded besides from Kuku Nor, Tibet, where 

 squalida also occurs. 



R. squalida G-uen. (= confinis Stgr.) (11 g). Forewing brownish grey with dark dusting; the inner squalida. 

 line strongly angulated; stigmata indistinct; hindwing whitish, with brown suffusion along termen and veins; 

 said to be a very variable insect, some specimens being much darker and more distinctly marked. — Occurs 

 throughout N. Asia, except China and Japan. Distinguished from sibirica Boisd. and lucens Btlr. by the 

 paler hindwings. 



R. augur F. (= omega Esp., assimulans Bkh.) (11 g). Forewing uniform brownish grey with a reddish augur. 

 tinge ; stigmata concolorous , black-edged ; claviform narrow ; orbicular variable , round , or flattened , some- 

 times prolonged to touch inner line; reniform with outer edge swollen in the middle, sometimes followed 

 by a dark shade: hindwing a little paler. Common throughout N. Europe, Amurland and Japan; — 

 hippophaes H. G. is a grey form with the reddish tinge wanting; — helvetina Knaggs is a pale blurred hippophaes. 

 form with obscure markings , and the fringe of hindwing pink. — Larva varying from purplish brown to e ve ina ' 

 greenish grey with a double row of whitish spots on dorsum and oblique dark streaks ; a dark brown blotch 

 across segment 12, swollen at each end, and edged behind with pale; on all low plants. 



R. Sibirica Boisd. Forewing uniform brown grey, much as in augur; the lines and edges of sibirica. 

 stigmata finely but distinctly black, not filled up with paler; hindwing also dark. Siberia; recorded also 

 from Korea. 



R. lucens Btlr. (llf). Forewing dull blackish grey; lines and stigmata filled up with paler grey; lucens. 

 marginal area paler beyond submarginal line; hindwing fuscous. The unique type is a ? from Tokio, Japan; 

 it is very close to sibirica Boisd., of which only the d" is known. 



R. deplorata Stgr. (llg). Intermediate between ravida and senna, both in size and markings; without deplorata. 

 the red tinge of ravida; the cell blackish, the two stigmata small, rounded and greyish; hindwing brownish- 



