THE ENTOMOLOGIST. 123 



Life -histories of Sawjlies. Translated from the Dutch of 

 Dr. S. C. Snellen van Vollenhoven by J. W. May, Esq. 



(Continued from p, 7G.) 



Emphytus Serotinus, Kl. 



Imago : King, Blailw. in Magazin Berlin, viii. p. 288, 

 No. 215 ; Hartig, Blatt-und Holzwespen, p. 253, No. 22. 



Larva undescribed. 



Emphytus niger, abdomine et femoribus fulvis, tibiis flavis, 

 tavsis posterioribus fuscis. 



Although this life-history is incomplete, as I am not 

 acquainted either with the e^^ or the pupa of the species 

 referred to, I 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 I 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 I have not received a single specimen from any of my 

 entomological friends. 



The larvae 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 resi they assumed 

 the same position as do the larvae of Emphytus cinctus, Z,, — 

 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 only 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 



