GEOMETRID.i:. PHIGAIJA. 155 



Found-in woods within the metroj)olitiiu district, but not com- 

 mon : I have frequently taken it at Coombe in the larva state, and 

 at Darenth. " Netherton,"" — T. C. Heyshavi^ Esq. " Epping-." 

 — Mr. Doubleday. " Neighbourhood of Edinburgh." — Rev. W. 

 Little. 



Sp. 4. (lefoliaria. Alls anticis Jlavescentibus aut aJbidis vel griseis, atoniis, piincto 

 medio strigisquefuscis; posticis pallidiorilms. (Exp. alar. 1 unc. 7 — 9 lin.) 



Ph. Ge. defoliaria. Linne. — Wilkes, pi. 36. f. li. — La. defoliaria. Steph. Caful. 

 part u. p. 117. No. 6451. 



Anterior wings whitish, or ochraceous irrorated with fuscous, with an incurved 

 black striga before the middle, broadly edged within with fuscous, and tinged 

 with rufous ; a dusky spot in the middle, and behind a round oblique repanded 

 striga of similar hue with the first; behind which the Avings are darker, with 

 the hinder margin itself pale, with a row of fuscous spots upon the nervures ; 

 cilia flavescent, interrupted with fuscous : posterior wings paler, with a 

 central fuscous spot ; cilia immaculate. 



Female yellow, dotted and spotted with black. 



The male is extremely variable. The anterior wings are sometimes ferruginous 



- or griseous throughout, with the anal striga darker : the strigiE themselves are 

 more or less obliterated, and sometimes fasciseform : in fact, scarcely two spe- 

 cimens occur precisely similar. 



Caterpillar red-brown or ferruginous, with an interrupted bright yellow streak 

 on each side, and a red spot with a white dot on each segment: — it feeds on 

 the oak, lime, beech, ash, alder, birch, elm, &c. : the pupa is red-brown, with 

 the apex very acute : it changes to the perfect state in the autumn or beginning 

 of the winter. 



Extremely abundant in woods and copses throughout the metro- 

 politan district. "Epping." — Mr. Doiihleday. "Little Orton."" — 

 T. C. Hey sham, Esq. 



Genus CLXIX. — -Piiigalia, Duponchel. 



Palpi very short, concealed within the hirsuties of the face, triarticulate, the 

 apical joint minute. Antenna; rather slender, elongate, each joint producin<>- 

 a long, slender, ciliated, curved branch on each side, gradually shortened 

 towards the apex and base : simple in the females : head sUghtly crested : 

 thorax large, woolly : abdomen slender, with a tuft at the apex : wings thin, 

 with the hinder margin entire, large in proportion to the body ; rudimentary 

 in the females. Larva with 10 legs, cyhndrical, of equal size throughout, 

 with a few short hairs : head hemispherical, a bifid tubercle on the eleventh 

 segment : pupa naked, in the earth. 



Between the contour of this genus and the preceding there is 



M 2 



