GEOMETRIDiE. — HALIA. 193 



Sp. 7. punctularia. Alls cinereo-albidis, atomis strigisque tribus aut quatuor 

 subcommunibus undulatis arcuatis subinterruptls fuscis. (Exp. alar. 1 unc. 

 1— 3lin.) 



Ge. punctularia. ffiibner. — Bo. punctularia. Steph. Catal. part ii. p. 125. No. 

 6510. 



Wings ashy-white, with pale fuscous irrorations, and with three or four nearly 

 common undulated bent subinterrupted fuscous strigae, arising from deep con- 

 spicuous equidistant dark spots on the costa ; the exterior (or fourth) striga is 

 frequently evanescent^ and in lieu thereof is an irregularly undulated white 

 one, bordered within with fuscescent : the strigse on the posterior wing are 

 generally very obscure, sometimes altogether wanting ; at the base of the cilia 

 is a fine interrupted black line, and the cilia are whitish, spotted with fuscous. 



In some examples the wings are of a deep fuscous ash, and in others of a gray 

 tinge. 



Caterpillar dusky-gray-brown, with five brighter stripes and a whitish streak on 

 each segment: it feeds on the birch (Betula alba) : — the imago appears about 

 the middle of May. 



Very abundant in Coombe, Birch, and Darenth Woods, and not 

 unfrequently taken in other woods within the metropolitan district, 

 where the birch abounds. " Aliesley." — Rev. W. T. Bree. " Ep- 

 ping." — Mr.Douhleday. " Baron- wood." — T. C. Hey sham, Esq. 

 " Newcastle, Meldon Park, &c."—G. Wailes, Esq. 



Genus CLXXXVIII. — Halia, Duponchel. 



Palpi short, connivent, acute, porrected obUquely, the base with elongate scales, 

 the apex sUghtly exposed ; triarticulate, the basal joint more than two-thirds 

 the entire length, slender, considerably curved ; the second very short, ovate; 

 the terminal minute ovate, subconic : maxilloe long. Antennoe short, in the 

 males each joint producing a short clavate ciliated twig on each side, gradually 

 shortening towards the apex, of which the few last joints are obconic and 

 simple, and the branches towards the base are also abbreviated ; simple in the 

 females : head small : eyes large, globose : thorax slender : wings expanded 

 during repose, pubescent; anterior with the hinder margin entire, repanded, 

 the costa with dark spots producing indistinct fasciaeform lines; posterior 

 obscurely indented on the hinder margin : body slender ; acute in the females. 

 Larva with 10 legs, smooth, spotted : pupa formed in a folliculus amongst leaves; 

 acuminated at the apex. 



The genus Grammatophora of my Catalogue ; subsequently 

 cliaracterized by Duponchel by the name it here bears : — it may be 

 readily known from all the foregoing by the great length of the basal 

 joint of the palpi, the short triangular pulverulent wings, of which 

 the anterior have certain black marks on the costa, which are ob- 



