GEOMETRlDiE. POLYPHASIA. 227 



Ge. Corylata. Thunberg, Ins. Suec. 61, pi. 4. — Ha. ruptata. Steph. Catal. part ii. 

 p. 133. Ah. 6567.—Albin. pi. xcviii./. a—d. 



Anterior wings with a lutescent fuscous patch at the base, dentate outwardly; 

 then a whitish striga, its centre clouded with lutescent and minutely sprinkled 

 with fuscous ; followed by a central fuscous fascia, dentate on its inner margin, 

 and on its outer edge very irregularly dentate, and considerably attenuated 

 towards the inner margin ; beyond this the wings are whitish clouded with 

 lutescent and fuscous, with an undulated white striga and a whitish patch 

 towards the middle of the hinder margin, on which is an irregular whitish 

 striga and a black line : cilia pale, with fuscous spots : posterior wings cinereous, 

 with a central fuscous dot; the hinder margin pale. 



Variable in the form of the central band of the anterior wings, which is very 

 frequently divided into two, so as to form two transverse spots. 



Caterpillar yellowish-green, with brownish-red spots on the back, and a whitish 

 lateral line ; it feeds on the black-thorn, hazel, lime, &c. : — the imago appears 

 in the middle of June. 



Abundant iu some places, especially at Coombe-wood ; also found 

 at Darentli and Birch Woods. " Epping." — Mr. Douhleday. " Mel- 

 don-park, Tanfield, &c." — G. Wailes, Esq. " Weston-on-the- 

 gveen."—Rev. A. H. Matthews. " Baron-wood."" — T. C. Heysham, 

 Esq. " Flisk, N. B:'—Rev. J. Fleming. 



Genus CCI. — Polyphasia* mihi. 



Palpi rather long, porrected obliquely upwards, clothed with long scales con- 

 cealing the terminal joint, acute at the apex and forming a sort of beak ; tri- 

 articulate; the basal joint robust, curved ; the second shorter, attenuated; third 

 minute, conic : 7}iaxince long. Antemice sim-ple in both sexes ; pubescent within 

 in the males, very slender in the females : head small : ei/es globose : thorax very 

 slender, squamous : 7vi7igs entire on the hinder margin, forming a triangle 

 during repose; the anterior acute at the apex, triangular; the disc traversed 

 with a central fascia, sometimes dark and solid, at others light and having 

 dark waved lines ; posterior about of equal size, ovate-triangular : abdomen 

 rather long, very slender in the males, with a large anal tuft ; shorter, rather 

 stouter, and slightly acuminated in the females : legs very slender. Larva 

 with 10 legs, slender, glabrous, with two short tubercles on the hinder segment. 



This genus forms a portion of the genus Harpalyce of my Cata- 

 logue, from which it evidently differs, not only by the dissimilarity 



* UoXh, multum ; (lida-n, apparitio. 



