geometrid.t;. — geometra. 165 



Birch M'oods, and occasionally at Coombe and Hertford, but far 

 from common. " Cummersdale." — T. C. Heysham, Esq. 



Sp. 3. Canaria. Alls in utroquc sera fere Jlavis, anticis fuho-irroratis, strigu 



dnabus lunuldque saturatioribus, posticis macula medid fused. (Exp. alar. 



1 unc. 4—6 lin.) 

 Ge. Canaria. Hubner?—Steph. Catal. part ii. p. 119. No. 64G1. 

 Wings in both sexes nearly yellow, slightly clouded with fulvous towards the 



tips, and a little irrorated with the same ; the anterior with two somewhat 



incurved, subparallel, fulvescent striga;, and a lunule of the same hue between ; 



posterior with a central fuscous spot : the hinder margin of all sometimes 



spotted with fuscous or black : thorax pale sulphureous. 

 Differs from the last by its smaller size, from the want of fuscous irrorations on 



the wings, which are of a far paler hue. 



Found within the metropolitan district towards the end of August, 

 but rare. 



Sp. 4. ochraria. Alis omnibus pallida ochraceis immaculatis, anticis strigis 

 duabus lunuldque obsoletd fulvescentibus ; thorace Jlavo. (Exp. alar. 1 unc. 

 3—5 lin.) 



Ge. ochraria. Steph. Catal. part ii. p. 119. N'o. 6462. 



Wings pale ochraceous, immaculate; anterior with two slightly incurved ful- 

 vescent strigse, generally approximating on the inner margin, and an obsolete 

 dusky lunule between, towards the costa: posterior immaculate, sometimes 

 slightly fulvescent towards the hinder margin, which is always immaculate on 

 all the wings: thorax bright pale yellow. 



The angles of the posterior wings are longer than in the foregoing insect, 

 although the insect is considerably smaller. 

 Also found within the metropolitan district, but uncommon : I 



have taken it at Darenth. 



Sp. 5. erosaria. Alis luteis, anticis truncatis medio strigis duabus oblique sub- 

 - rectis, thorace anticefulvo, postice luteo. (Exp. alar. 1 unc. 4 — 7 lin.) 

 Ge. erosaria. Wien. Verz. — Steph. Catal. part ii. jd. 119. No. 6463. 



Wings luteous, immaculate; anterior truncate at the apex, with two oblique 

 nearly straight deep fuscous strigae, the outer one a little expanded : posterior 

 wings rather of a deeper hue, generally immaculate, but sometimes with an 

 obsolete transverse central striga: thorax anteriorly fulvous, posteriorly luteous. 

 Female generally rather darker in colour. 



Both sexes vary a little in colour : in some males the wings are pale ochraceous, 

 and the strigae approximate more or less on the inner margin. 



Larger than the foregoing species, with the angle of the posterior wings more 

 produced in proportion to the size ; and from the following it differs in having 

 the anterior wings distinctly truncate at the apex. 



