Publ l. II. 1910. EUGHORISTEA; BRITHYS; GERAPTERYX. By W. Warren. 93 



36. Genus: Suchoristea 



liar. 



Tongue developed: palpi short, second segment well-haired, third quite short; frons smooth; 

 antennae of d" with pedicellate fascicles of cilia: abdomen without crests. 



Type E. limbata Btlr. 



E. limbata Btlr. Forewing cream-white, which colour, however, shows only in the marginal area limbata. 

 beyond the biconcave submarginal line; the rest of wing is washed with brownish and speckled with 

 fuscous: lines black, angulate; space between basal and inner lines from costa to median vein, and the 

 entire space between outer and submarginal lines filled in with black brown; upper stigmata with black 

 outlines, the reniform always, the orbicular often, filled in with brown; claviform minute; space between 

 orbicular and reniform generally pale; veins black; fringe brown; hindwing greyish ochreous, with dark 

 cellspot and postmedian line, beyond which, especiallj r towards apex, the terminal area is fuscous; fringe 

 white. Japan. 



'M. Genus: Brithys Hbn. 



Tongue feebly developed: palpi short and stout, obliquely porrect, thickly scaled; frons smooth; 

 antennae of cT flattened and thickened, subserrate, pubescent; legs short and thick; scaling smooth; thorax 

 and abdomen without crests. 



Type B. encausta Hbn. A small, but natural genus; its affinities are with other tropical genera; 

 the larvae feed upon Liliaceae growing on the sea-coasts. 



B. pancratii Cyr. (20 h). Forewing dull blackish fuscous with an undertone of wood-brown, showing pancratii. 

 chiefly along submedian interval and the space between outer and submarginal lines; lines finely black, the 

 outer lunulate dentate: claviform stigma small, black; orbicular obsolete; reniform dark with the lower half 

 outlined with pale: submarginal line pale, macular, preceded by a redbrown cloud; the marginal area dark; 

 hindwing satiny white, in the ? tinged with smoky brown along costa and termen. Occurs only in the 

 South of Europe, in France, Portugal, and Italy; also in Algeria. — Larva stout, reddish grey or brown, 

 with a transverse row of round white spots on the fore- and hindmargins of each segment; thoracic plate 

 black, cut by a white line; anal plate black ringed with yellow; head, breast, and forefeet yellow; feeding 

 up in autumn in the shoots of Pancratium maritimum. 



B. encausta Hbn. (20 h). Forewing dull chalk white, the base, inner margin, and a band between encausta. 

 outer and submarginal lines dull flesh colour, this tint being more largely developed in the <f; lines finely 



black, approximating below middle, the outer conspicuously lunulate dentate; claviform stigma outlined with 

 black; a horizontal black line in cell takes the place of the orbicular; reniform with centre brown; a black 

 festooned marginal line, the margin itself narrowly white beyond the waved grej r submarginal line; fringe 

 grey; hindwing white. On the coasts of Italy, Sicdy, Greece, and Gorcyra. — Larva like that of pancratii, 

 but paler: living in a similar way. 



38. Genus: ©erapteryx Curt. 



Tongue well-developed; frons smooth; palpi short, second segment hairy, terminal small; antennae 

 of a* bipectinate to apex; pectus and abdomen hairy, the latter with lateral tufts of hair; ? always larger 

 and generally paler than <?. Larva feeding in spring and summer on the roots of grasses, sometimes doing 

 widespread damage. 



Type C. graminis L. The genus is distinguished from Tholera by the fully-developed tongue, which 

 in that genus is all but obsolete. 



C. graminis L. (— tricuspis Esp. ?, ochrea Tutt) (20 h). Forewing olive grey or olive rufous, or graminis. 

 olive fuscous; median and marginal areas sometimes deeper coloured, otherwise the 3 lines are undefined; 

 stigmata pale, especially the renitorm, which at base is white, emitting a ray basewards along the median 



vein, and two externally along veins 3 and 4; claviform elongate; orbicular flattened; hindwing dark 

 fuscous grey, with the basal area pale, sometimes whitish ; the fringe white ; — in the form tricuspis <? Esp. tricuspis. 

 (= rufa Tutt) the reniform with its trificl lower end is more strongly developed than usual; — of this 

 Obsoleta Tutt is only an extreme form in which the other markings are obsolete; — rufo-costa Tutt (20 i) obsoleta. 

 is a grey form with red costal streak, from the Hebrides; — in hibernicus Curt. (20 i) the base of cell of rufo-costa. 

 forewing bears a pale, elongated, sometimes forked patch; — in albipuncta Sven the white lower end of h fy miCU f a 

 reniform is entire, without pale ramification: — gramineus Haw. (= albineura Bdv.) (20 i) has all the veins gram i neus 

 whitish, the intervals dark olive, without any rufous mixture, the stigmata and base of cell more conspicuously 

 pale: the submarginal line prominently pale and dentate along the veins, the teeth alternating with the 

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