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THE ENTOMOLOGIST. ol 
tint approaching to yellow. The head is of a faint brown 
tint, or very pale jfeuille-morte. The body is somewhat 
slender, smooth, devoid of hair, and having two rather thick 
folds on each segment reaching to the row of stigmata; of 
these the first only is conspicuous, being comparatively large 
and bordered with black, the others being much smaller and 
having white borders. ‘The mandibles are brown, and the 
eyes, which are small, are placed in round black spots. The 
thoracic legs are rather long and of a green colour; there 
are, in addition, only six pairs of abdominal legs, and the 
last segment is entirely destitute of the usual pair of anal 
legs. The tail-end is somewhat pointed. This species does 
not wave about the tail, and there is no trace whatever of 
extensible glands between the legs. 
I left my larvz out of doors until the end of May, as I had 
found by experience that the twigs of the pear, although 
kept in water, very soon wither; I then placed them in large 
confectioner’s glasses, which were filled up to a certain height 
with damp mould. The larve, one after another, let them- 
selves fall from the leaves and crept into the mould. I 
examined the glasses from time to time all through the 
summer, looking to see if I could perceive any signs of life, 
but in vain; so that by October I gave up watching, hoping 
to find the imago on the wing in the spring. However, the 
month of May arrived and I had not seen an imago. I now 
removed all the old pear leaves, and under them I found a 
female imago, dead; it had probably kept concealed among 
the leaves ever since its emergence, and so IJ had failed to 
discover it. I now turned all the mould out of the glass, a 
little at a time, hoping still that I might find some pupz or 
nearly-developed imagos, but in vain. I found nothing, and 
was obliged to content myself with my solitary specimen: 
this was a female, and as the individuals of this species, 
taken by Mr. G. A. Six and myself in April and May, were 
also females, I am unable to give a description of the male. 
It seems that Hartig, who says of the present species “ fliegt 
mitte April in Garten,” had also observed none but females. 
It may be remembered that in the case of other species of 
sawflies, even including some of the commoner sorts, the 
males appear to be wanting, from which circumstance 
Professor Siebold supposes that in the case of these insects 
