NOCTUIDiE. ACOSMETIA. 121 



senheimer offers a remarkable example : his name (Antliophila) 

 having been originally applied, in 1804, by Illiger, to a genus of 

 bees, and in 1811, by Haworth, to a genus of Lepidoptera (Si- 

 maethis, Syst. Cat. pt. ii. p. 161) : — according therefore to the prin- 

 ciples of modern nomenclature, Ochsenheimer's name must be 

 changed, though, upon the same principles, it is not quite correct 

 to employ that which is here adopted in order to avoid unnecessary 

 increase by the imposition of a new one : — the slender aciculated 

 terminal joint of the palpi sufficiently discriminates it from the other 

 semidiurnal Noctuidae. 



Sp. 1. senea. Olivaceo-fusca, alls anticis fascid obliqud pone medium mar- 

 gineque postico late purpuris. (Exp. alar. 7 — 9 lin.) 



No. asnea. Wien. Verz.—V\\y. aenea. Steph. Catal. pt. ii. p. 110. No. 6408. 



Olive-brown; anterior wings the same, with an oblique purplish fascia beyond 

 the middle, and another on the hinder margin, separated by an undulated 

 obsolete olivaceous striga ; cilia purplish with the tips paler : posterior wino-s 

 with the hinder margin purplish, cilia £is before. 



This species varies considerably both in size and colour : some examples are of 

 a deep pitchy-brown, with scarcely a rudiment of purple ; others are cine- 

 rascent, or fuscous, with the fascia; and striga more or less distinct ; in some 

 the latter is of a cinereous hue, and is continued through all the wings, the 

 posterior having also two purplish fascife. 



Not very uncommon on heaths near London towards the end of 

 August; it occurs near Birch andDarenth woods, Coombe, Ripley, 

 Hertford, &c. « Cobble Hall.''— r. C. Heysham., Esq. 



Genus CLHI. — Acosmetia*, niihi. 



alpi short, porrected obliquely, densely clothed with rather long scales, the 

 terminal joint short and obtuse; basal joint as long as the second, robust, 

 nearly straight, second subcylindric, obtuse at the apex, terminal minute, 

 ovate-conic: maxillw as long as the antennae. Antennae moderate, faintly 

 pectinated in the males, simple in the females : head small, slightly crested 

 between the antennae ; eyes naked ; thorax sraaU, not crested ; body slender, 

 tufted at the apex in the males, acute and more robust in the females ; wings 



recently employed to designate an artificial genus of Geometridje; it must consequently be 

 expunged ; and as theie does not appear sufficient cause for ejecting the type of Treitschkes' 

 genus Cidaria therefrom, I shall retain this latter application in the following arrangement 

 for such species of the group as seem strictly to belong thereto, as placed in my Systematic 

 Catalogue. 



* AKO(;u-/>rov, inoruatum. 



