® . 
6 THE ENTOMOLOGIST. 
and the stigmata (fig. 3) were elliptical, with a slight undula- 
tion of the sides. Although there was no difference in the 
shape of the head of my two larve, the ground tone of the 
colour was different, as was also the appearance of the pale, 
sepia-coloured spot on the vertex. In one the colour was 
faint reddish yellow, with two wedge-shaped transverse spots 
separate from each other; in the other the head was yellow, 
of the colour of wax, with a large transverse spot on the 
vertex, terminating in a point at either end. In both, the 
eyes, which were small, were placed in very deep black 
round spots. The head of the first-named species is repre- 
sented at fig. 2. 
Fig. 1 was drawn about a week too soon, as the larva was 
not then full grown. ‘They grow nearly to the size of fig. 2, 
on plate 3 of the second volume, and then the little wart-like 
eminences on the sides are more projecting, and are of a still 
paler tint. Further, it will be hardly necessary to add that 
the larva had twenty-two legs, but it is worthy of record that 
the claws of the anterior legs were black. 
I have not been able to observe that the larve in question 
had the faculty of ejecting fluid from their sides, as is the 
case with other Cimbices; I also failed to perceive any 
openings or valves above the stigmata: the same negative 
observation is made by Brischke. 
On the 25th of July the larve began to spin up among the 
twigs of the birch. The cocoon (fig. 4) was hard, and of a 
brown colour. As I had only two cocoons I did not like to 
open one, and so I am unable to say anything about the 
pupa, which, in all probability, strongly resembles that of the 
so nearly allied species. 
On the 9th of April of this year (1868) I found two males 
alive in the box in which I had kept the cocoons, from which 
a little round piece had been cut out in the usual way; we had 
had rather warm and very sunny days towards the end of 
March and the beginning of April. 
The following is a description of these two males, one of 
which is represented, with the wings extended, at fig. 5; the 
other, at rest, at fig. 6:— 
At the first glance the whole body appears to be black, but 
on closer examination it is seen to be of a dark, bronzy 
earth-coiour. The head below the antenne, the clypeus, 
