GEOMETRI D.?;;. — AN I SOl'T K RYX. 151 



towards the base, and another waved one towards the outer margin, accom- 

 panied exteriorly with two larger black spots upon a reddish gi-ound, one 

 towards the anterior, the other near the posterior angle: posterior wings with 

 a single striga; the margin of all with a row of black spots; cilia ochraceous- 

 white. Female in general much more irrorated with fuscous, with the strigaj 

 of a deeper hue than in the male. 

 Extremely variable : in some examples the minute fuscous irrorations on the 

 wings are completely wanting. 



Also till within these few years esteemed a rare insect: the first 

 examples of recent capture were taken by Mr. Bentley, who sup- 

 plied my cabinet, in the New Forest, in June, 1819 : it has since 

 been found in the same locality in the utmost profusion : the females 

 are comparatively rare. " Prestwick Carr." — G. Wailes, Esq. 



Genus CLXVII. — Anisopteryx* viihi. 



Palpi minute, slender, squamous, triarticulate ; the terminal joint subacute: 

 maxilla; obsolete. Antennw of the males rather elongate, each joint producing 

 a short ciliated twig, or an elongate fascicle of hairs, on each side, the apex 

 nearly simple ; female simple : liead small, round : thorax slender, squa- 

 mous : ahdo7nen very slender, slightly tufted at the apex ; rather short and 

 acute in the female: wings thin, with the hinder margin entire; anterior 

 elongate-triangular, during repose concealing the posterior, which are orbicu- 

 late-triangular, large in proportion to the anterior ; colour fuscescent, with 

 transverse strigie ; females with imperfect or rudimentary wings. Larvu. with 

 10 legs, smooth, without tubercles; feed on trees: pupa subterraneous. 



This and the two following genera (with other insects to be here- 

 after mentioned) form a portion of Latreille's genus Hibernia, and 

 of the artificial group Fidonia of Treitschke ; but as I consider that 

 a discrepancy of structure in either sex to its nearest allies points 

 out a diversity of habit, it becomes necessary to break down the 

 Latreillian genus above referred to, as the female of the present 

 offers many points of dissimilarity to the other species, and the male 

 itself is also widely different in contour. 



Sp. 1. leucophearia. Alis anticis griseo-fusc/s auf nigris, nebulosis, fascia 



media angulat'i pallida. (Exp. alar. 1 unc. 4—8 hn.) 

 Ge. leucophearia. Wien. Verz — An. leucophearia. Steph. Catal. part ii. p. 116. 



JVo. 6446. Ham's, A. pi. 4>3.f. m, n, o, q. 



* Awfl-j;, i.iequalis ; •rrtt^ot^ ala. 



