GEOMETEES. 



109 



segment, and a median line on the tenth, 

 eleventh, and twelfth segments are often of ( 

 this colour, and the thirteenth segment is 

 generally tinged with purple ; there is, more- I 

 over, a white stripe just below the spiracles; 

 the body is glaucous or blue green ; the legs 

 are pale transparent green, the claspers of 

 nearly the same colour, but often tinged or 

 blotched with purple. It feeds on white- 

 thorn, blackthorn, hornbeam, sloe, oak, and 

 almost every forest tree, and is full-fed in 

 June. 



The MOTH appears on the wing in No- 

 vember, and is common everywhere in 

 England, Scotland, and Ireland. (The scien- 

 tific name is Oporabia dilutata.} 



240. The Autumnal Moth (Oporabia filigram- 

 mur'ui]. 



210. THE ACTUMXAL MOTH. The an- 

 tennas are almost simple in both sexes; the 

 fore wings are gray, with numerous darker 

 transverse waved lines, and are subject to the 

 same variations as those of the preceding 

 species, from which, however, it appears con- 

 stantly to differ, in being of less size, and in 

 having the fore wings narrower and consider- 

 ably more pointed. 



The CVTEUPILLAR is described by Mr Hellins 

 as feeding on sallow : it is stout and smooth, 

 the general colour rich velvety green, the 

 belly pale whitish green ; the head and 

 second segment shining, and having a blackish 



tinge ; on each side of the dorsal vessel is a 

 pale yellowish green stripe, and on each side 

 are two sulphur yellow stripes ; on the back 

 of each segment tubercles appear as minute 



yellow dots : the segmental divisions are 

 orange yellow ; the spiracles are yellow, and 

 between them and the belly are a few speckles. 

 The caterpillars bury themselves in the earth 

 in April, to undergo their transformation. 



The MOTHS are taken in August and Sep- 

 tember, and have only been found in the 

 north of England and in Scotland, never in the 

 south of England or in Ireland. (The scientific 

 name is Oporabia Migrammaria.} 



241. The Twin-spot Carpet (Larentia didymata). 



241. THE T WIX-SPOT CARPET. The antennae 

 of the male are slightly pectinated ; those of 

 the female simple ; the fore wings of the male 

 brown, with four irregular transverse waved 

 pale gray bars ; the first of these is short, nar- 

 row, and very near the base ; the second 

 broader, and double ; the third, also broader 

 and double, is beyond the middle of the wing ; 

 the fourth is narrow, interrupted and parallel 

 with the hind margin ; between the third and 

 fourth of these bars, about its middle, is a 

 double dark spot, which gives the insect its 

 name ; the hind wings are paler, with several 



transverse waved markings. The female is 

 altogether paler, that is, of a pale whitish 

 gray, the markings of the male being per- 

 ceptible, but not conspicuous. 



The CATERPILLAR feeds on the common 

 chervil (Anthnscus sylvestris], and may be 

 obtained by shaking the leaves of that plant 

 into an open umbrella in April and May ; it 

 is of a pale green colour, with a narrow green 

 stripe on each side. 



The MOTH appears on the wing in June, and 

 is common in England, Scotland, and Ireland. 

 (The scientific name is Larentia didymata.] 





