254 HAUSTELLATA. — LEPIDOPTERA. 



Variable a little in colour, and on the outer margin of the anterior wings is 



frequently a whitish undulated striga. 

 Caterpillar yellow or dull green. 



Less abundant than the last, but nevertheless not uncommon 

 within the metropolitan district. " Bottisham, less common than 

 the preceding/'— Rer. L. Jenyns. " Baron- wood."— T. C. Hey- 

 sham^ Esq. 



Sp. 3. impluviata. Alls griseo-fuicescentibus, anticis, basi fascidque lata undatd 

 pone mediam albicantihus, lineoUs atris ad apicem. (Exp. alar. 1 unc. 2—3 

 lin.) 



Ge. impluviata. Wien. Verz. — Ypsipetes impluviata. Steph. Catal. part ii. 

 p. 138. No. 6598.— Ph. literata. Don. xiv. pi. 499./. 2. 



Anterior wings with the base whitish, or cinerascent, sometimes tinted with 

 greenish, and bordered externally by an oblique nearly straight black line, fol- 

 lowed by a more or less solid fuscescent fasciseform space ; then a whitish or 

 cinerascent broad curved fascia, in which is a short fuscous line near the costa ; 

 behind this fascia is a second fasciseform space, which has frequently a 

 waved striga passing through its middle ; the hinder margin is pale, with one 

 or more black streaks towards the costa, and sometimes an oblique one at the 

 apex: posterior wings fuscescent, sometimes with obscure, waved, strigae 

 towards the hinder margin. 



Rather variable ; in some instances the fascia on the anterior wings is scarcely 

 perceptible, in others the inner margin of the wing is clouded with black ; 

 and in one of my specimens the space between the base and the fascia and 

 the hinder margin is rufo-piceous, with undulated black strigae. 



Caterpillar reddish-brown slightly clouded, with a pale lateral and two dorsal 

 lines; head reddish: it feeds on the birch and hazel: — the imago appears 

 towards the end of May. 



Not common within the metropolitan district. I have taken spe- 

 cimens at Coombe and Darenth Woods; it appears to be more 

 frequent in the north. " Meldon-park." — G. Wailes, Esq. 



Sp. 4. elutata. Alls anticis viridibus aut rufescentibus atomis strigisque nigris, 

 fascidque pone medium albidd, posticis cinereo.-fuscis. (Exp. alar. 1 unc. 1 — 3 



lin.) 

 Ge. elutata. Wien. Verz. — Yp. elutata. Steph. Catal. part ii. p. 138. JVo. 6599. 



Albin, pi. xliv. f. 73. e—h. 



Anterior wings green or reddish, more or less irrorated with black, and ir- 

 regularly strigated and clouded with the same, the strigaj being more or less 

 confluent and divided, and sometimes almost broken into spots; one rather 

 before the middle is generally the most conspicuous, and is angulated out- 



