STYGIOSTOLA, ORTHOGOlSriCA. 45 



and reuiform slightly defined by blackish, the former small, 

 round, the latter irregular with some whitish scales on outer 

 edge ; a distinct dark medial shade ; postmedial line blackish, 

 defined on outer side by white towards costa, then by yellowish, 

 bent outwards below costa, then minutely dentate, slightly 

 incurved below vein 4, some white points beyond it on costa ; 

 subterminal line indistinct, whitish slightly defined by brown 

 on inner side, excurved below vein 7 and at middle ; cilia 

 mixed with grey at tips. Hind wing greyish uniformly suffused 

 with brown ; a slight brown terminal line ; cilia brown with 

 yellowish line at base and greyish line near tips ; the underside 

 grey irrorated with brown, the costal area suffused with brown, a 

 darli discoidal spot and indistinct diffused curved postmedial line. 



Hah. Bkixain, Scotland, Forres {Salvage), England, Leech Coll. ; 

 France, Sand Coll. ; Denmark, Leech Coll. ; Germany, Zeller & 

 Leech Colls. ; Austria, Frey Coll., Tirol {Hampson) ; Switzerland, 

 Engadine, Zeller Coll. ; N. Italy ; Bulgaria ; Russia, Livonia, 

 Zeller Coll. ; Armenia. Exp. 36-40 millim. 



Larva. Meyr. Brit. Lep. p. 113 ; Barrett, Lep. Brit. v. p. 238, pi. 216. f. 1. 



Ochreous brown ; dorsal line sometimes indistinctly paler ; a 

 subdorsal series of pale oblique marks dark-edged below sometimes 

 present ; lateral line pale ; head dark brown. Food-plants : Viola, 

 liumex, Polygonum, &c. 8-3. 



Genus ORTHOGOITICA, n. n. 



Tj'pe. 



Orihogonia, Feld. Wien. ent. Mon. yi. p. 38 (1852), nee Ortho- 

 gonius, Dej. Ool. 1825 sera. 



Proboscis fully developed ; palpi obliquely upturned, the 2nd joint reaching 

 about to vertex of head and broadly angled with hair in front, the 3rd rather long 

 and fringed with hair in front ; frons smooth, with tuft of hair ; eyes large, 

 round ; antenn£e of male minutely ciliated ; thorax clothed chiefly with scales, 

 the teguliE produced to a dorsal ridge, the prothorax with triangular crest 

 followed by a double ridge-like crest ; tibia moderately fringed with hair ; 

 abdomen with small dorsal crests on basal segments and lateral fringes of hair 

 towards extremity. Fore wing with the costa arched at base, then nearly 

 straight, the apex somewhat produced, the termen crenulate and somewhat 

 excised towards tornu.s, the cilia stcmgly dentate ; veins 3 and 5 from near 

 angle of cell ; 6 from upper angle ; 9 from 10 anastotnosing with 8 to form the 

 areole ; 11 from cell. Hind wing with veins 3, 4 from angle of cell ; 5 obso- 

 lescent from just below middle of discocellulars ; 6, 7 from upper angle ; 8 

 anastomosing with the cell near base only. 



A. Fore wing with the antemedial line angled at median 



nervure, postmedial line present. 

 a. Fore wing with the antemedial line straight and very 

 oblique below median nervure. 

 g}-. Fore wing with the postmedial line minutely waved plana. 



5^. Fore wing with the postmedial line not waved "plumhinotata. 



h. Fore wing with the antemedial line less oblique below 



median nervure and excurved at vein 1 sera. 



B. Fore wing with the antemedial line indistinct, strongly 



and evenly curved, postmedial line abeent grisea. 



