GEOMETRID.^. — CLEORA. 181 



The transition from the last genus to Alcis is most beautifully- 

 preserved through the medium of this genus, of which CI. cinetaria 

 is the type, though there is some discrepancy between the species 

 in general habit; the first, which Duponchel associates with Hippar- 

 chus, differing in being almost entirely of a rich green, with large 

 blotches of a pale hue, and not, as in the other species, transversely 

 strigulated with black lines or dots, by which secondary character 

 they may be known from all the foregoing insects, excepting the 

 Fidonise, from which their indented posterior wings remove them : 

 — nearly all the species in their larva state subsist upon lichens. 



A. Wings greeU;, with pale strigge and spots. 



Sp. 1. bajularia. Alis viridissimis, maculi anguli ani rufo-aJbd, sesquialterd 

 marginis tenuioris. (Exp. alar. 1 unc. 1 — 3| lin.) 



Ge. bajularia. Wien. Fer%. — CI. bajularia. Steph. Catal. part ii. p. 123. No. 

 6486. Ph. ditaria.— Z)o«. vi. p/. 202./ 1. 



Anterior wings bright green, with two waved and somewhat angulated whitish 

 transverse strigse, one before, the other behind, the middle, and a large blotch 

 of reddish-white, palest at the edges, at the inner angle ; posterior with a 

 similar blotch at the anal angle, and one or two others towards the apex of the 

 hinder margin ; cilia whitish spotted with brown, with an undulated fuscous 

 strigaon the margin of the wings: antennae and forehead whitish. 



Caterpillar griseous, said to be covered with small leaves and scales: — it feeds 

 on the oak: — the imago appears about the beginning of July. 



Not very common : I have taken a few specimens at Daren th and 

 Birch Woods; and in July, 1827, I met with a single example at 

 Ripley : it, however, occurs in other places. " Weston-on-the- 

 green." — Rev. A. H. Matthews. 



B. Wings more or less strigulated with black. 



Sp. 2. Lichenaria. Alis viridi cinereoque variis, atoviosis, strigd anticd suhin- 

 curvd alterdque communi posticd prwrepandd denticulataque nigris. (Exp. 

 alar. 1 unc. 3—5 lin.) 



Ge. Lichenaria. Wien. Verz. — Don. x. pi. 342./. 1. CI. Lichenaria.— 5'ifej3/i. Catal. 

 part ii. p. 123. No. 6487. 



Wings varied with green and cinereous, with dusky irrorations : the anterior 

 with a somewhat incurved black striga near the base, and a second, very much 

 repanded and strongly denticulated, towards the hinder margin: posterior 

 wings with a single denticulated striga a little behind the middle : and on the 

 hinder margin of all a slender denticulated line at the base of the ciUa, the 

 latter greenish interrupted with black. 



