28o THE MOTHS OF THE BRITISH ISLES. 



Scalloped Oak (CrocalUs elinguaria). 



Fig. 6 on Plate 114 shows the usual form of this species, in 

 which there are blackish dots on the outer margins of all the 

 wings. Fig. 7 depicts a form with the ground colour paler, 

 and the outer marginal dots absent (ab. trapezaria, Boisduval). 

 The ground colour varies to almost whitish on the one hand 

 and to reddish buff on the other ; the cross lines on the fore 

 wings are distinct as a rule, but occasionally meet on inner 

 margin (ab. signatipennis) ; the central space between the lines 

 is most often brownish, sometimes tawny, but not infrequently 

 this area is but little darker than the general colour. The 

 blackish discal spot on the hind wings varies in size and some- 

 what in shape, but this and also the line beyond, are sometimes 

 absent. Porritt {^List of Yoi'kshire Lepidoptera) mentions two 

 gynandrous specimens. Eggs, pale grey, with darkish grey 

 marking (Plate 1 16, Fig. 2<5). The caterpillar, of which two figures 

 from coloured drawings by Mr. A. Sich are given on Plate 116, 

 Figs. 2, 2«, varies from ochreous grey to dark grey tinged with 

 purple ; the front rings are often paler above, and the back has 

 diamond-shaped marks upon it ; the elevation on the last ring 

 is edged with black. It feeds on the leaves of most trees and 

 bushes during the spring. The moth is out in July and August, 

 sometimes earlier. A pretty generally distributed species 

 throughout the British Isles, but so far it has not been noted 

 from the Hebrides, Orkneys, or Shetland. 



Abroad, the range extends to East Siberia. 



Orange Moth {A?igero?ia prtmarid). 



Typical males of this species are orange and the females pale 

 ochreous, all the wings sprinkled or freckled with purplish grey. 

 (Plate 1 17, Figs, i 6 > 7 9 •) Ab. corylaria, Thunberg (Figs. 2 5 , 



