GEOMETRIC^. — CIDARIA. 219 



Much less abundant than the last in the neighbourhood of the 

 metropolis, being very local ; but where found it occasionally appears 

 in profusion : I have met with several examples at Darenth-wood : 

 it likewise occurs in the New Forest. " Raehills, abundant." — 

 Rev. W. Little. " Weston-on-the-green." — Rev. A. H. Matthe-jos. 



Sp. 10. montanata. Alls anticis albis, Jasciis duabus fuscis, puncto suboceUari 



atro. (Exp. alar. 1 unc. 3 — 5 lin.) 

 Ge. montanata. Wien. Ftr:;.— Ci. implicaria. Steph. Catal. pt.ii.p. 131. No. 



6548. 



Anterior wings white or whitish, with a small incurved or angulated dusky or 

 cinereous fascia at the base, a broad unsolid fuscous or fulvescent-brown one, 

 bordered on each side with fuscous, with the hinder edge two- or three-angled, 

 and a large somewhat ocellated black spot on the disc towards the costa ; the 

 hinder margin is generally somewhat suffused with cinereous, with an undulated 

 white or pale striga, and an interrupted fuscescent line on the extreme edge: 

 ciha spotted with fuscous : posterior wings whitish, more or less fasciated with 

 fulvous. Female generally whiter than the male. 



Variable as to the width and colour of the central fascia on the anterior wings: 

 it is sometimes very broad, and bears three or four deep-black, or fuscous, 

 waved striga; ; or it is white in the middle, especially on the costa ; sometimes 

 fulvescent or nearly black : in some instances it is divided, and in rare cases 

 a patch on the costa is all that exists, the inner portion being completely 

 obliterated. 



Caterpillar fuscous, with white lateral lines ; it feeds on the primrose :— the imago 

 appears about the middle of June. 



One of the most abundant of the indigenous Geometridse through- 

 out the metropolitan district. " Raehills." — Rev. W. Little. " Wes- 

 ton-on-the-ffreen." — Rev. J. H. Mattheics. " Rose Castle." — 

 T. C. Hey sham, Esq. " Epping."— Mr. Douhleday. 



Sp. 11. fluctuata. Alis albidis aut cinereis, basi fasciisque duabus abb?-eviatis 

 costalibus fuscis. (Exp. alar. 1 unc. — 1 unc. 3 lin.) 



Ph. Ge. fluctuata. Linne.—Ci. fluctuata. Steph. Catal. pt.ii. p. 131. No. 6549. 

 Albin.pl. xcix.J". e — h. 



Wings whitish or cinereous, with a somewhat triangular fuscous patch at the 

 base, a broad subrhombic one, in which is a black dot, on the costa in the 

 middle,' emarginated on both sides, and a smaller one towards the apex, on 

 the outer margin of which a whitish undulated striga arises, within which 

 is placed the ordinary geminated spot common to the genus : on the hinder 

 margin is an interrupted dark line ; the cilia are clouded with fuscous : 

 posterior wings of a darker hue, with pale transverse strigse. 



Extremely variable ; sometimes the wings are of a darker cinereous, with the 



22 



