GEOMETRID^. POLYPHASIA. 231 



Extremely variable, scarcely two examples occurring precisely similar : in some 

 the wings are very prettily varied with ferruginous and white ; others have 

 scarcely a tint of the former colour, and in some the fuscous hue predomi- 

 nates : — the central fascia is sometimes entirely free from marks, at others is 

 thickly crowded with waved black or dusky strigae. 



The most abundant species of tlie genus, occurring in plenty on 

 the borders of woods and in bushy places throughout tlie metro- 

 politan district at the end of July. " Epping." — Mr. Doiibleday. 

 " Meldon-park, Newcastle, &c."— G. Wailes, Esq. " Saint Ni- 

 cholas, &c." — T. C. HeTjsham, Esq. " Strand-on-the-green." — 

 Bev. A. H. Matthexvs. 



Sp. 7. saturata. Alls anticis fusco-cinereis, fascid medio pallidiore, extus argute 



dentata. (Exp. alar. 1 unc. — 1 unc. 3 lin.) 

 Ha. saturata. Steph. Catal. part ii. p. 134. No. 6576. 



Anterior wings fuscous-ash, with an indistinct unsolid broad central fascia, the 

 outer margin of which is strongly dentate, and produced in the middle, the 

 larger process being somewhat obtusely trilobed, its disc is traversed with 

 undulated strigse, and bears an elongate black spot towards the costa ; towards 

 the hinder margin is an indistinct ferruginous fascia and some dusky clouds, 

 with an undulated white striga: posterior wings fuscescent. 



Also extremely variable : in one of my specimens, which appears to belong to a 

 distinct species, the central fascia is deep fuscous and very apparent, with 

 the outer margin somewhat dissimilar in form to that of the usual state of 

 the insect : — it closely resembles the following insect, but the basal fascia is 

 distinct and considerably dentate. 

 Less frequent than the last, but nevertheless not uncommon 



throughout the metropolitan district in July. " Meldon-park, 



Newcastle, &c." — G. Wailes, Esq. 



Sp. 8. perfuscata. Ahs subcinereis, fascia edentatu hasi, alter fique medio argute 

 dentata nigris. (Exp. alar. 1 unc. 2—3 lin.) 



Ge. perfuscata, Haworth. — Ha. perfuscata. Steph. Catal. part ii. p. 134. No. 

 6577. 



Wings somewhat cinereous, with a simple black fascia at the base, and a broad 

 one in the middle, produced in the centre of its outer edge, and strongly 

 dentate ; this is bordered by a slight pale striga, followed by a ferruginous 

 tinge, and an obscure waved pale or whitish line, and the hinder margin is 

 very dark fuscous, with darker clouds : posterior wings fuscescent. 



Also variable : one of my specimens— which was given to me by Mr. Ha worth- 

 has a distinct round white spot in the centre of the dark fascia of the anterior 

 wings, adjoining the usual black dot : it is the var. y of Lep. Britt. 



Somewhat rare : found, however, in several of the metropolitan 



