156 HAUSTELLATA.— I.EPIDOPTER A. 



evidently great similarity; but the thorax is comparatively very 

 robust and densely pilose in this genus, which is a vernal one, the 

 antennse of the males are broadly pectinated, and of the females 

 rather elongate and simple, and the latter sex lias mere rudiments 

 of wings: from Nyssia, the large wings and slender body distinguish 

 this genus. 



Sp. 1. pilosaria. Alls griseo-virescentibus, fusco-irroratis ; jnincto medio stri- 

 gisque quatuor interruptis nigris. (Exp. alar. 1 unc. 6 — 9 lin.) 



Ge. pilosaria. Wien. Verz. — Amphidasis pilosaria. Steph. Catal. part \\. p. 117. 

 No. 6452. Albin, pi. xci.f. e. i. 



Head and thorax vclvety-greenish-griseous, the latter with a transverse fusces- 

 cent line in front : anterior wings the same, with a satiny gloss, and sprinkled 

 throughout with brown ; the costa with four distinct larger spots of brown, 

 from which arise four rather indistinct transverse strigse of the same hue : 

 posterior wings similar, but pale, with one or two transverse strigse ; the 

 margin of all with a faint fuscous striga more or less interrupted : cilia im- 

 maculate greenish-fuscous : abdomen rufescent ; antennae griseous, with 

 virescent radii. Female with the head and thorax virescent ; the abdomen 

 rufescent, with a whitish line down the back ; legs dusky, annulated with white. 



The male is slightly variable in colour, and in the intensity of the strigse, and 

 its rich hues in a great measure become evanescent with death. 



Caterpillar yeUow, thickly but irregularly varied with reddish-brown, some 

 ferruginous spots and black dots, from which last arise hairs of the same 

 hue; the last segment of the body, with the head and legs, rusty-brown: — it 

 feeds on the oak, birch, elm, whitethorn, &c. about June: the pupa is brown: 

 the imago appears in March. 



Not very common within the metropolitan district : I once met 

 with several specimens on some palings leading from Redpost-hill 

 to Dulwich, and have occasionally taken others. " Alderley, 

 Cheshire."— i?^t;. E. Stanley. « AWe^ley ." — Rev . W. T. Bree. 

 " Netley."— i?^t>. F. W. Hope. 



Genus CLXX. — Nyssia, Dnponchel. 



Palpi very short, triarticulate, densely embedded in silken hairs: viaxilloe ob- 

 solete. Antennw curved, strongly bipectinated in the males, each joint pro- 

 ducing a ciliated twig on each side ; pubescent in the females ; head small, 

 deeply inserted in the thorax, which is thick and woolly: wings thick, and 

 small in proportion to the body, the hinder margin entire; totally wanting 

 in the female: abdomen robust, conic, pilose. 



Larva with 10 legs, cylindrical, slightly attenuated at each end, smooth, and 

 shghtly tuberculated ; head hemispherical: pupa naked, subterranean. 



