AND THEIR TRANSFORMATIONS. 83 



Species 1. — Platypteryx lacertinaria '-^(Plate LXXIV., Figs. 1, 2) — Varies from 1 to l-J- inch in 

 expanse; wings fulvous-buff; hind ones paler, with numerous irregularly dusky transverse lineolse on the fore 

 ones, which also have two oblique dark strigfe, between which is a dark dot ; the region of these strigje and the 

 extremity of the fore wings darker : hind wings sometimes with a slight streak on the inner maro-in. The 

 caterpillar is reddish brown, with darker markings : it feeds on Birch trees ; and the moth occurs in birch 

 plantations from March to June, and is not very uncommon. 



' SvNONVMEs. — Phalana Geometra lacerlinaria, Linnjeus ; 

 DonovaD 7 ; pi. 251, fig. 2. 



Geometra lacertula, Wien. Verz.; Hiibner ; Hawortli ; Stephens; 

 AVood, fig. 751. 



Phalana Scincula, Hiibner, $ . 

 Geometra dentaria, Thunberg. 

 Falcaria curvula, Haworth, (variety). 



Species 2.— Platypteryx cultrariaJ — (Plate LXXIV., Fig. 3) — Differs from the preceding in being •^■^■Va^ 

 rather larger, with the fore wings less strongly dentate ; the oblique strigfe parallel and rusty-brown ; the 

 lineolffl almost or quite obsolete ; hind wings pale. Taken near London, and Monks Wood, Hunts ; Dorsetshire, 

 &c., in July. 



' Synonymes. — platypteryx cultraria. Leach ; Stephens ; Wood ; fig. 732. 

 Falcaria laceriula $, Haworth. 



DREPANA, Laspetres. PLATYPTERYX, pars, Ochsenheimer, Curtis. 

 The entire, but falcated, fore wings of these insects separate them from the preceding ; and the males have the 

 antennae more deeply bipectinated than in the former ; but in D. falcataria those organs are slightly bipectinated 

 in the female ; the spiral tongue is very short, and the hind tibire have only a single pair of spurs, thus 

 approximating to the former ; whereas, in the other species the female antennae are simple, the hind tibiifi armed 

 with two pairs of spurs, and the spiral tongue more developed. 



Species 1. — Drepana falcataria '' — (Plate LXXIV., Figs. 4, 5) — Measures from li to 1^ inch in 

 expanse ; wings pale ochraceous buff, with five or six slender, very waved strigse running across all of them, and 

 having a dark blotch and two dots in the middle of the fore ones, beyond which is a chestnut-brown, very oblique 

 fascia, terminating above in a gray marginal patch. The caterpillar has the head brownish-yellow, with the 

 mouth, sides of the body, anterior segments, and feet, green ; the back paler or reddish-brown, with a lateral 

 line of pale red. It feeds on the birch, alder, trembling poplar, sallow, and oak, and the moth appears in May, 

 June, and August, in woods, and is not uncommon. 



'Synonymes. — Phalcena Geometra falcataria, hinmeas ; Stephens; Wood; fig. 753 ; Curtjs ; Brit. Ent. pi. 555. ""' 

 Phalcena falcula, Wien. Vera. ; Hiibner ; Haworth. 



Species 2. — Drepana hamula' — Plate LXXIV., Fig. 6) — Measures from 15 to 17 lines in expanse, and 

 has the wings fulvous ; the fore ones richer brown, with two much bent pale luteous strigse, between which 

 are two dark dots towards the costa ; hind margin paler, with a dark patch towards the apex ; hind vdngs 

 darker towards the inner margin, with several pale strigse, and a dark central dot. The caterpillar is dull 

 flesh-coloured, with the head, anterior segments, and belly (extending to the tail), greenish-brown. It feeds on 

 the oak ; and the moth occurs in May, June, and July, in oak and birch woods, but is uncommon. 



' Synonymes. — Bombyx Aamu/a, Wien. Verz.; Hiibner; Albin, 

 pi. 65, fig. a— d ; Wilkes, pi. 30 ; Haworth ; Stephens ; Wood, 



fig. 754. 



Phaltsna falcata, Fabricius ; Stewart ; Turton. 



Phalcena binaria, Hufnagle. 

 PhaliBna sicula, Sepp., vol. ii., tab. 16. 

 Phalcena lacerlinaria, the brown hook-tip, Harris ; Aurelian, pi. 

 41, f. a, b. 



h2 



