6 THE ENTOMOLOGIST. 
only reaches below the round eye-spots, but, in addition, a trans- 
verse band is observed between the eyes, crossing the clypeus. 
Hartig is wrong in saying that the body is entirely smooth, 
without spines; with a good lens minute spines are distinctly 
visible. 
For the purpose of moulting, my larve placed themselves 
round three or four fir needles, to which the old skin was after- 
wards attached. I am sorry I had not time to make a drawing 
shewing the manner of this operation. Immediately after the 
moult the larva, which was now much shorter and thicker, was of 
a pale grass-green tint, with the exception of the labrum, which 
was brown, and also of the black eye-spots. Subsequently the 
head acquired an olive tint, and the legs, together with the pro- 
jecting dermal folds above them, were obscure yellowish white 
(fig. 3). 
In somewhat less than a week’s time after this moult the 
larvee began to make their cocoons, some on the needles of the 
fir twigs, others against the sides of the box in which they were 
kept. The cocoon (fig. 4) was reddish white, and had some fine 
pilose brown wrinkled lines; it was of the usual form of the 
cocoons of this genus, but appeared to me to be a little more 
elliptical than that of Pini. 
With me the imagos appeared in August, which is contrary to 
Hartig’s experience, with whom they only made their appearance 
in May of the following year; however, on this point he is not 
very clear. His own words, which seem to me not very explicit, 
are as follows :— 
“Die Verpupping geschah im, Zwinger, -in der Mitte des 
Monat Juli, die Wespen schwiirmten in der Mitte Juni des fol- 
genden Jahres also nach beinahe jihriger Larvenruhe. Aus 
iiberwinterten Cocons schwiirmten die Wespen Mitte Mai.” 
The sexes differ greatly from each other; the female is much 
variegated, the male being of a very sober tint. Fig. 5 repre- 
sents the female of the natural size; fig. 6 the same sex magnified 
and with the wings expanded; fig. 7 the male. The sexes are, 
moreover, distinguished by the antennz, which in the female are- 
serrate-dentate on the inner side, and in the male are doubly 
pectinated, having twenty teeth gradually decreasing in length. 
The following is a description of the two sexes :—Female, length 
8-9 mm., expanding 17 or 18 mm.; body short and thick, being 
