THE APRIL MISELIA. 227 



terminal one which is nearly naked ; the head tufted 

 on the crown ; the thorax robust and quadrate, and 

 the abdomen tufted on the back towards the base. 

 All the wings are rather narrow, the anterior pair 

 roundish on the hinder margin. The larva? have 

 the head and pectoral segments a little depressed, 

 and the head is considerably retracted in repose. 

 They have two protuberances on the back of the 

 penultimate segment ; their abode is usually between 

 the bark and on the trunk of trees. The species 

 named Aprilina, from the usual period of its first 

 appearance, has the upper wings of a fine green, 

 thickly marked with transverse black streaks and 

 spots, the apex with two rows of spots shaped like 

 the head of an arrow, one of the rows placed upon 

 the hinder margin. The under wings are dusky 

 brown, with a faint light-coloured streak on the 

 inner side rather behind the middle, and another 

 along the hinder edge ; the fringe of the wings 

 whitish spotted with brown. The head and thorax 

 are the colour of the upper wings, the latter with 

 some black marks on the back and a line of the 

 same colour on each side ; abdomen grey ; legs 

 ringed with black, the posterior wings having a black 

 spot in the middle on the under side. 



The caterpillar varies in appearance according to 

 its age, and even full grown individuals are often 

 very dissimilar. It is commonly ash-grey, with dark 

 spots and lines on the back and sides ; sometimes 

 the back is spotted with white, and the sides more 

 or less striped with that colour. It feeds on dif- 



