THE ENTOMOLOGIST. 123 
Life-histories of Sawflies. ‘Translated from the Dutch of 
Dr. S. C. SNELLEN VAN VOLLENHOVEN by J. W. May, Esq. 
(Continued from p. 76.) 
Empnytus Serotinus, K/. 
Imago: Klug, Blatlw. in Magazin Berlin, viii. p. 288, 
No. 215; Harlig, Blatl-und Holzwespen, p. 253, No. 22. 
Larva undescribed. 
Emphytus niger, abdomine et femoribus fulvis, tibiis flavis, 
tarsis posterioribus fuscis. 
Although this life-history is incomplete, as I am not 
acquainted either with the egg or the pupa of the species 
referred to, | have thought it advisable to publish my 
observations as far as they go, as it seems to me that the 
species is very rare, and | might probably wait for a long 
time in vain before I had an opportunity of completing them. 
I first observed a larva of this Species many years ago at 
Beele, near Voorst; since then I have only found two others ; 
and | have not received a single specimen from any of my 
entomological friends. 
The larve I found were very nearly full grown, having 
only the last moult to undergo: one, as above mentioned, 
was taken at Voorst, and the others between Wassenaar and 
the Hague, at the side of the road. They were found on oaks 
in the beginning of the month of June, and seemed to feed by 
preference on the young leaves. When at rest they assumed 
the same position as do the Jarve of Emphytus cinctus, L.,— 
rolled round spirally, as shown at fig. 1. In feeding they 
began at the edge of the leaf, eating on toward the midrib. 
The body was quite round, much wrinkled on the back, and 
without either hairs or tubercles. They had twenty-two legs. 
The skin was sea-green in colour, but entirely covered with a 
sort of white bloom or powder, so that the true colour of the 
skin could ouly be distinctly seen between the folds. The 
spiracles, which were eighteen in number, had very narrow, 
obscure white borders, and were thus so inconspicuous that 
it was only by the aid of a magnifying-glass they could be 
distinguished. The outline of the head was round, excepting 
the parts of the mouth, and flattened anteriorly ; it was of a 
purplish gray colour to just above the eyes, and from there 
