GEOMETRIDiE. — SCOTOSIA. 259 



The very dissimilar form of the wings in this genus, as well as 

 the dissimilarity in structure and length of the palpi, and the re- 

 markable posterior tibise of the insects of this genus, at once show 

 the necessity of keeping it distinct from the foregoing, in which 

 the palpi are long, and the posterior tibise in both sexes simple. 



Sp. 1. petraria. Alls nitentibus,Jlavescenti-cinereisanticis strigis tribus obliquis 



rectis albicantibus, intusfusco adnatis. (Exp. alar. 1 unc. 2 — 4 lin.) 

 Ge. petraria. HUbner. — Ph. petraria. Steph. Catal. part ii. p. 141. No. 6623. 



Wings glossy, yellowish-ash, slightly pulverulent ; anterior with three whitish 

 oblique strigae bordered internally with fuscous, the anterior vanishing 

 towards the costa, and placed before the middle, obscurely bent; the second 

 behind the middle, deeply bordered within and very straight, and between 

 these a fuscous dot ; and between the posterior striga and the hinder margin 

 is an obscure whitish undulated striga ; posterior wings paler, with an ab- 

 breviated striga on the inner margin behind the middle, and the hinder margin 

 fuscescent; all the cilia immaculate. 



Common on heathy places where fern abounds in the neigh- 

 bourhood of London, especially at Coombe-wood, and near Hert- 

 ford. " Rockcliff, Orton, hc^—T. C. Heysham, Esq. « Epping." 

 — Mr. Douhleday. 



Genus CCXV. — Scotosia* mihi. 



Palpi long, slender, pon-ected in form of a beak, closed with long pilose scales 

 at the apex and nearly concealing the terminal joint; triarticulate, the basal 

 joint short, robust, curved ; the second longer, rather slender at the base, and 

 a little attenuated at the apex ; terminal elongate, lanceolate : maxillce rather 

 long. Antennae simple in both sexes, slightly pubescent within in the males : 

 head small, with a fascicle of scales anteriorly between the eyes, which are 

 globose and prominent : thorax slender with a squamous tuft behind : wings 

 disposed in a triangle during repose; anterior slightly indented; posterior 

 deeply crenate on the hinder margin, all transversed with numerous more or 

 less distinct oblique dark lines : abdomen slender, very long, and tufted at the 

 apex in the males, the terminal joint produced into two broad elongate vertical 

 laminae extending beyond the tufts ; shorter and carinated down the back in 

 the females, with a short anal tuft. Larva with 10 legs, simple, lineated : 

 pupa subterranean. 



* Zhoto;, caligo. 



