66 



HAUSTELLATA LEPIDOl'TKRA. 



antennae : ei/es deeply immersed, globose : thorax stout, pilose, not crested : 

 wings deflexed, anterior elongate-triangular, faintly rounded at the base of 

 the costa, on the hinder margin; plain, with simple transverse pale oblique 

 lines : posterior ovate-triangular, snbdiaphanous : body rather stout, and 

 acute at the apex, with a very small tuft at the apex in the males, and cari- 

 nated on the back in the females : legs short, slender. Caterpillar free, 

 robust, fleshy, naked, subcylindric, a little attenuated to the tail, with 

 sixteen legs : pupa enclosed in an exposed cocoon, one end of which has 

 frequently a conical protuberance. 



Adhering strictly to the rules of nomenclature, the insects of the 

 present genus should be considered as constituting the genus Tortrix, 

 inasmuch as the first Linnean species of that grovip is included 

 therein ; nevertheless, as that name is so totally inapplicable here, I 

 have retained it to Ph. To. viridana and its congeners, and have 

 adopted the name employed by Hiibner in preference to that of 

 Treitschke (Halias), both on the score of priority, and to avoid the 

 confusion by using a word far too similar to Halia, although 

 recently adopted by Mr. Curtis: — the present insects may be known 

 by their comparatively gigantic size, combined with their beautiful 

 green anterior wings, which have one or more pale oWique streaks 

 thereon. 



Sp. 1. prasinana. Alis anficis vhidiLns, strigis irihiis obliqnis alhis, margo 

 postico maris rvfis,fa;mincE aJbis. (Exp. Alar. 1 vuic. 3 — 6 lin.) 



Ph. To. prasinana. LirniL — Chi. Fagana. Steph. Caial. ii. 168. A^o. CS43. 

 Ph. Fagana. Z)ore, viii. 7)/. 280. 



Anterior wings green, with the costa and three oblique streaks white, the 

 posterior streak leading from the apex: thorax green, with four white 

 streaks : antennae fulvous. Male with the costa of the anterior wings at 

 the apex and the hinder margin, cilia, and inner margin, more or less bright 

 red; posterior wings yellowish white; abdomen the same : female with the 

 same parts of the anterior wings, and the posterior wings entirely glossy 

 white. 



Var. — Male with the base and apex of the anterior wings green, the centre 

 with a broad ochraceous-yellow fascia. 



Both sexes vary considerably in the intensity of colour, and the middle of 

 each space between the streaks on the upper wings is paler than the edges ; 

 sometimes broadly white. 



Caterpillar pale yellowish-green, with a yellow lateral line and minute dark 

 specks, and two red lines at the tail : it feeds on the oak, ash, alder, beech, 

 &c.; pupa reddish brown, sprinkled with an ashy powder, inclosed in a finn 

 silken cocoon : the imago appears in June. 



