I'JH n AUSTET.I.ATA. — I,KPII)OPTP:UA. 



Gexls CCCVIII. — OiiTHOT^ENiA, Ciirtis. 



Palpi short, parallel, porrected horizontally, thickly clothed with slender 

 scales, subclavate, the terminal joint distinctly exposed and slender: maxillcE 

 very short. Antennae short and slender, faintly pubescent within in the 

 males : head small, with a loose tuft of scales on the front : eyes large, sub- 

 globose : thorax robust, subglobose, not crested : wings entire, anterior 

 elongate-triangular, broadish, the hinder margin rounded, the disc ferrugi- 

 nous or dark reddish-brown, with numerous pale faint silvery streaks, 

 most frequently decussating or anastomosing; posterior ovate-triangular, 

 rather acute on the hinder margin: cilia long: body short and rather stout, 

 especially in the females, and with a small tuft at the apex. 



The insects of this genus, as here restricted, may be known by 

 having the anterior wings rounded on the hinder margin, with longish 

 ciha, the disc being of red or brown tints, the markings being broken 

 into spots and imperfect fasciae by numerous decussating or anasto- 

 mosing silvery streaks : the species are generally rare, and almost 

 all confined to fir groves and plantations. 



A. Anterior wings bright tawny or orange, with distinct silvery-white 

 decussating streaks : — Rhyacionia, p. Hiibntr. 



Sp. 1. Turionana. Alls anticis aurantiaco-fuhis xtrigis quatuor anastomosantibus 

 margineque posiico argenieis, posticis albidis. (Exp. Alar. 6 — 11 lin.) 



Ph. Ti. Turionana. Linne.—Ar. Turionana. Steph. Catal. ii. 190. No. 7125. 

 Orth. Turionana. Curtis, v. viii. pL 364. 



Anterior wings bright fulvous orange, with about four irregular transverse 

 anastomosing silvery streaks, and a simple one on the hinder margin, some 

 of them bifid on the costa, which has one or two small silvery dots ; the 

 extreme hinder margin is also silvery, with a very slender blackish line at 

 the base of the cilia, which are pale : posterior wings dusky. 



Found, but not common, in June, near Birch wood, and in Norfolk, 

 also towards Kensington, and in Yorkshire. 



Sp. 2. gemmana. Alis anticis cinnamomeo-rufis strigis duplicatis liturisque 

 argenteis, costd albo pnnctata. (Exp. Alar. 6 — 8 lin.) 



To. gemmana. Hiibner. — Ar. gemmana. Steph. Catal. ii. 190. No. 7122. 



Anterior wings of a dull cinnamon-red, with various duplicated silvery streaks, 



and some obscure dashes of the same ; the costa with a icw white spots, 



and cilia brownish : posterior wings fuscous. 

 Rather variable in colour, and always with the streaks of a more silvery hue, 



and the ground colour darker than in the foregoing species, than which it is 



also smaller. 



