BOARMID.-E—SELENIA. 95 



dorsal prominences and smaller lateral projections ; head 

 small, rounded, brown ; face and space between the lobes 

 paler; third pair of legs placed on a fleshy pad; anal ex- 

 tremity furnished with two projecting points ; colour variable 

 — ferruginous, purple, reddish-brown, or more usually orange- 

 brown ; protuberances darker but edged in front with a paler 

 line ; on the sixth segment are two dorsal whitish spots ; 

 subdorsal lines paler ochreous or pale grey, interruptedly 

 edged above with black ; spiracular stripe bright orange or 

 pale ochreous, conspicuous only on the first four segments ; 

 spots and spiracles dull black ; uudersurface clouded with 

 purple; front surfaces of the legs black. (C. Fenn.) Mr, 

 Buckler figures one larva which has the anterior half of its 

 body orange-brown and the posterior purple-grey, and another 

 of a purple-slate colour with orange bands on the back of the 

 anterior segments ; there is also much variation in black or 

 white dorsal markings. 



May and June, and the second generation in August and 

 September, on birch, hawthorn, blackthorn, plum, willow, 

 sallow, sweet gale, alder, lime, dogwood, bramble, raspberry, 

 Cotoncaster, and honeysuckle. Probably on almost all decid- 

 uous trees and shrubs. Feeding principally at night, and 

 remaining upon its food-plant during the day ; with the 

 first and second pair of legs folded closely to the body, the 

 third pair is extended almost at right angles to the body, 

 looking like a pair of thorns upon the rough twig which the 

 creature so closely represents. 



PurA short and thick, eye-covers prominent, glossy ; limb- 

 covers compact ; antenna-covers more prominent, showing, 

 even in the female, broad bars of sculpture, like pectinations ; 

 wing-covers short, thickened, gloss}^ but covered with minute 

 incised lines ; all the segments minutely and sparingly pitted, 

 except a narrow band at the hinder edge of each, which is 

 quite smooth ; general colour pitchy- brown ; the hinder 

 bauds of the segments paler brown : cremaster blacker, broad, 



