THE APRIL MISELIA. 227 
terminal one which is nearly naked ; the head tufted 
on the crorni ; 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 larvsB have 
the head and pectoral segments a little depressed, 
and the head is considerably retracted in repose. 
They have two protuberances on the hack of the 
penultimate segment ; their abode is usually between 
the bark and on the trmik of trees. The species 
named Aprilina, from the usual period of its first 
appearance, has the upper wings of a fine green, 
thickly marked nnth 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. Tlie under wings arc 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 n-ings 
whitish spotted with hroivn. 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 ivith black, the posterior wings having a black 
spot in the middle on the imder side. 
The catci'pillar varies m appearance according to 
its age, and even full grown individuals are often 
very dissimilar. It is commonly ash-grey, nuth dark 
spots and lines on the back and sides ; sometimes 
the back is spotted wth white, and the sides more 
or less striped with that colour. It feeds on dif- 
