GEOMETRIDiE. — POLYPHASIA. 229 



Varies in having the central fascia on the anterior wings white in the middle. 

 Differs from the former by its narrower wings, and by the different form of the 

 basal and central fasciae, and by its dissimilarity of colour. 



Found in Devonshire : I possess two specimens given to me by 

 Dr. Leach, who captured them near Ashburton. 



Sp. 3. marmorata. Alis anticis ferrugineo-cinereis subnebuhsis, fascid medio 

 albd nigro undulatd, extus productd arguteque dentatd. (Exp. alar. 1 unc. 

 1— 3lin.) 



Ph. marmorata. Fahricius.—Yidi. marmorata. Steph. Catal. part ii. p. 134. 

 No. 6572.— Ph. omicrata. Bon. xv. pi. 520. f. 1 ? 



Anterior wings rusty-ash at the base, with a narrow angulated fuscous striga 

 edged with black, and towards the middle a very broad unsolid white fascia, 

 more or less banded on each side uith fuscous, and with several undulated 

 black strigae, which are sometimes united towards the inner margin, and form 

 black circles ; towards the costa the white colour is always predominant and bears 

 a black dot, and the exterior margin of the fascia is considerably produced in 

 the middle, and irregularly, but strongly, dentate ; beyond the wing is ashy 

 tinted with ferruginous and clouded with fuscous towards the hinder margin, 

 near which is an interrupted waved white striga, and a black line on the margin 

 itself: nosterior wings fuscescent or dusky- white, sometimes with a faint 

 angulated striga. 



Extremely variable ; sometimes the white, at others the black, or the ferruginous, 

 colours predominating ; and the strigse more or less intense or deficient. 



Less abundant than the first species, but in the woods of Kent it 

 occurs more frequently than in other places near the metropolis, in 

 July. " Epping." — Mr. Doiiblcday. " Meldon-park."— G. Wailes, 

 Esq. " Cuddoch."— T. C. Heysham, Esq. " Raehills."— i?g5y. W, 

 Little. 



Sp. 4. concinnata. Alis anticis griseo-cinereis, atro-nebulosis, fascid medio in- 

 solidd albidd, extus argute dentatd, strigdque albd posticu angulatd. (Exp. 

 alar. 1 unc. 3 lin.) 



Ha. concinnata. Steph. Catal. part ii. p. 134. No. 6573. 



Anterior wings griseous-ash, clouded with deep black, and prettily varied with 

 interrupted obsolete whitish and black strigae, with an indistinct unsolid 

 whitish central fascia, of which the outer edge is considerably produced, and 

 strongly dentate between the lobe and the costa, as well as towards the inner 

 margin ; on the disc is a large black dot, placed on the edge of the whitish 

 portion of the central fascia; and on the inner margin, towards the base of the 

 wing, are two very conspicuous white spots ; ciha fuscous, with darker clouds ; 



