LIFE-HISTORIES OF SAWFLIES. 149 
inches, or a little more or less; but the wings are broad, the hind 
margin of the fore wings slightly concave, and the hind wings 
dentated, and sometimes with a projecting tooth in the middle. 
“They are black, with a broad white or green band across the 
middle of both wings, divided in two on the fore wings, and with 
a smaller spot of the same colour nearer the tip. The pale 
markings are bordered beneath with brown borders, divided with 
red, and there is a red spot at the anal angle of the hind 
wings, except in the smallest species, P. Irenea, which is black 
and white above without any shade of green, and the white mark- 
ings are bordered below with black and tawny instead of red. 
All the genera in this paper are South American. 
LIFE-HISTORIES OF SAWFLIES, 
Translated from the Dutch of Dr. S. C. SNELLEN VAN VOLLENHOVEN, 
By J. W. May. 
(Continued from p. 106.) 
SELANDRIA CEREIPES, Voll. 
Larva and imago unknown. 
Selandria nigra nitida, clypeo et cenchris albis, pedibus cereis, 
areola lanceolata aperta. 
Long. 6 mm. Exp. al. 13 mm. 
This new species is, without doubt, most nearly related to 
Selandria stramineipes, Klug., which is described in ‘der Gesell- 
schaft naturforschender Freunde zu Berlin Magazin,’ Achter 
Jahrg. p. 75 at No. 62, and is also mentioned by Hartig in his 
well-known work on sawtlies, at page 282. Our species is so 
nearly allied to the German insect that I was for a long time in 
doubt whether-it should not be considered as a variety of the 
latter. I have, however, come to the conclusion that the 
difference is sufficiently great to be accepted as establishing a 
specific distincticn. For my acquaintance with both larva and 
imago I am indebted to my friend, Mr. EK. E. de Roo van 
Westmaas, who sent me several larvee, in various stages of 
growth, on the 26th August, 1869, which he had taken on 
Lastrea Filix-mas. 'Three of these larve, at different stages, 
are represented at fig. 1, of the natural size and colour; it will be 
