368 I.El'IDOPTERA. 



seems to be more t'ref(uent, and more iinu'keil, in this tli.an in 

 any other. It consists in the obliteration of all the usual 

 markings, and the substitution of cloudinj^s of dirtj- grey on 

 a blue-white ground ; and was described by Haworth as a 

 distinct species, under the name luiljifcntnu. 

 On the wing in June and July. 



Larva cylindrical, rather sluggish, very dark green ; 

 raised dots small, black, head and both plates black. 



April to June, on hawthorn and blackthorn, drawing to- 

 gether a leaf or two. Also on cherry, plum, apple, and other 

 fruit trees, P//;'!4,sy«^)0?U(v(, mountain ash ; bird-cherry, sweet 

 gale, birch, alder, sallow, and ash. 



Pita black, spun up in the larval habitation. 



The moth frequents hedges, fruit trees, and siirubberies, 

 and is common throughout the United Kingdom, and in 

 Central and Southern Europe, Sweden. Livonia, Finland. 

 Russia, Asia Minor, and Armenia. 



8- P. sauciana. Huh. — Hxpanse ;5 inch (1-j mm.). Fore 

 wings somewhat ovate ; basal two-thirds bluisli-black, its 

 margin nearly upright and penetrated by a sharp white 

 hook; hinder area white with a blue-black apex and costal 

 dots. 



AntenuEe black ; palpi, head and thorax black-brown ; 

 abdomen sooty Ijlack. Fore wings slightly ovate, not very 

 narrow ; costa gently arched ; apex almost squared ; two- 

 thirds of the wing from the base bluish-black with a rather 

 upright margin, in the middle of which is a sharply incised 

 white hook-mark ; outer area pure white at the first, then 

 usually clouded with black towards the hind margin, and the 

 apical portion occupied by transverse black clouding ; cilia 

 brown-black, but at the anal angle white. Hind wings dark 

 smoky brown; cilia dull white, with a dark basal line. 

 Female similar. 



Underside of the fore wings leaden-black, sprinkled on 



