THE ENTOMOLOGIST. 1S3 



very nearly, or quite, full grown ; probably on account of their 

 having wandered away far from the spot where they were 

 hatched, I was unable to find any trace of the eggs on the 

 little birch tree on which the larvae in question were. I 

 found only four individuals; but, taking for granted there 

 were originally more in the brood, 1 concluded the rest had 

 fallen victims to the cold, or the rain and wind. 



The following is a description of these larvae, reference 

 being made to plate 6, figs. 1, 2 and 3. Head entirely 

 shining black ; the sutures of the epistoraa and of the 

 epicraniura only being of a somewhat paler tint ; abdomen 

 yellowish green and shining, as if oiled, but at the same time 

 wrinkled. I counted ten pairs of legs, all pale green ; the 

 anterior six with brown claws. Above the second and third 

 leg was, on either side, a rather large triangular orange spot ; 

 at the same level, on either side of the 4th segment, two 

 smaller spots, but more oblong in form ; thence from the 5th 

 to the 11th segment on both sides, larger, nearly triangular, 

 orange, spots. The 12th segment was mostly bluish green, 

 in consequence of the contents of the intestine being 

 perceptible through it, the following segment and the anal 

 valve being yellowish green. The stigmata had narrow white 

 margins ; the skin was, however, not sufficiently thin to 

 allow of the tracheae being seen through it. Although the 

 least touch, or even the act of breathing upon them, caused 

 the larvae to elevate the abdomen, and to retain it for some 

 time in the position shown at fig. 2, I was unable to perceive 

 any projecting glands between the legs, or any excretion of 

 fluid. My larvae took to the earth on the 26lh of August, 

 each individual spinning a cocoon of the appearance repre- 

 sented at fig. 4, and externally entirely covered with grains 

 of earth. 1 have not noted whether the cocoon was simple or 

 double : I imagine the former. The first imago made its 

 appearance on the 14th of September of the same year. 

 Hartig gives a full and accurate description of this species. 

 Its length is 7 mm., expanding to 13 mm. Body somewhat 

 stout ; head dull black ; eyes black ; the clypeus, upper lip and 

 palpi being whitish ; jaws brownish. The antennae, which are 

 as long as the abdomen and half the thorax, are of a dull 

 brown colour, the under surface being paler and redder. The 

 prothorax is orange-yellow ; the mesothorax entirely, and the 



