DESCRIPTIVE NOTICES OF CONSPICUOUS SPECIES 249 



verse shade, followed by a whitish transverse line, which, 

 however, is only distinct towards the inner margin, being 

 suffused with grey towards the costa ; beyond this are 

 two black spots on the disc, which are generally united 

 so as to form a short curved streak ; towards the hind 

 margin is a sinuous, pale, transverse line, edged on both 

 sides with dark grey. 



The larva, which has not yet been observed, will, I 

 believe, prove to be an elm feeder ; it should be sought 

 for in May. 



The perfect insect appears in June and July, and 

 though it may sometimes be dislodged from hedges by 

 the beating- stick, it may be more readily obtained by 

 its partiality for light. 



FAMILY XVI. 

 CE AMBUS GERUSSELLUS. 



(Plate XIII., Fig. 5, <? and ?.) 



This small species, the smallest we have in the genus, 

 is, like most of its congeners, very plentiful where it 

 occurs ; in the south of England it rather affects chalky 

 soils, and the Londoner will find it plentiful in the 

 neighbourhood of Mickleham ; northwards it has been 

 noticed near Manchester; it has not hitherto been 

 detected in Ireland. 



The expansion of the wings is about J inch. The 

 two sexes are very different in colour, but the markings 

 are quite similar. The male has the fore- wings of a dull 

 brown, with two darker sinuous transverse lines beyond 

 the middle, the second of which is externally edged with 

 paler along the hind margin near the anal angle are 



