HETEROGENEA ASELLUS. 73 



Drepana HAMULA. 

 Plate LIII, fig. 2. 



On the 27th of August, 1879, I received from Mr. 

 W. R. Jeffrey a dozen eggs laid by a captive female ; 

 they were laid between the 18th and 20th of August on 

 the edges of leaves of oak, here and there one on the 

 very edge of a leaf. 



At first they were greenish-white, but in the course 

 of two or three days they changed to a light fawn 

 colour, and afterwards to a bright deep red at each 

 end of the shell, with an irregular blotch of fawn 

 colour glistening in the mid-surface. 



In shape the egg is oval, with a depression on its 

 upper surface and ribbed longitudinally. 



On the 30th two larvas were hatched, and two more 

 on the 31st, one of which died soon after without 

 feeding (of the remaining eggs some did not change 

 colour, others turned red, but afterwards shrivelled up). 



The newly-hatched larva carries its hinder segments 

 a little elevated ; it is brown, with the head paler. On 

 the 7th September the first moult was over. (W. B., 

 Note Book III, 289.) 



HeTEROGENEA ASELLUS. 



Plate LIII, fig. 7. 



On the 13th October, 1872, I had the good fortune 

 to receive an example of the larva of this species, found 

 on a beech tree near Marlow, and kindly presented to 

 me by the Rev. B. Smith. 



For two days the larva continued to feed at intervals 

 on the edges of beech leaves, and on the 16th it spun 

 its cocoon on the under surface near the edge of one 

 of the leaves, and the perfect insect, a female, came 

 forth on the 7th July, 1873. 



This larva, when moving and fully stretched out, 



