194 [February, i 



much ; antennal fovea less defined, head smaller, cenchri smaller, spurs' 

 shorter compared to the metatarsus, which is itself shorter compared j 

 to the 2nd joint, abdomen with a broad and continuous black band, 

 scutellum marked with fuscous in the centre, and the frontal areaj 

 more distinct. 



The larva feeds on alder. It is green, the head is of a darker green, especially 

 on the top ; a black line goes from the top to near the eyes, and another line goes 

 from the top half way down the face, mouth brownish ; mandibles black at the tips. 

 The body is covered with tubercles of a darker colour than the body, and generally 

 irregularly oblong in shape. On the 2nd and last segments they are somewhat' 

 irregularly arranged, but on the middle ones they are usually in two pairs above, and 

 three single ones in a line below them, while there is a longer, slightly curved one 

 over the abdominal leg, and one or two smaller tubercles over that. Two curved 

 lines are over the legs, which are glassy-white ; the claws are brown. On the back 

 are two white lines ; there is no distinct black line along the sides, but a thin 

 white one, which runs through the spiracles. The cerci are black, as well as the 

 space immediately behind them. 



It is double-brooded, and is freely parthenogenetic in confinement, the eggs 

 laid by the virgin females yielding only males. 



Common in Scotland, and at "Worcester. 



3. JV. miliar is, Pz., = viridis, Htg. 



4. J¥. salicivorus, sp. n. 



Pale testaceous-green ; the vertex in the middle (the black being continued as 

 a small rounded mark behind), the usual three marks on mesonotum, the space 

 between the cenchri (separated in the middle), black; on the base of abdomen are 

 one or two fuscous transverse marks. Antennae slender, as long as the body, black, 

 fuscous beneath, the 3rd joint slightly shorter than 4th. Head slightly narrowed 

 behind the eyes, broadly rounded in front, but retreating on the outer side of an- 

 tenna?, and projecting, not sharply, between them ; frontal area well-marked, its 

 lower end incurved at the centre, through the upper part of the large, distinct, oval, 

 antennal fovea projecting into it ; furrows on vertex distinct, but not reaching to 

 the back ; there is no central furrow. Clypeus with a shallow indentation. Cerci 

 as long as the hinder spurs. Wings as in miliaris. Length, 2\ — 3 lines. 



Of similar size and coloration (except that the black, or, rather, 

 fuscous, markings on abdomen are confined to the base) to miliaris 

 and glutinosce, but it differs from both in having the head much more 

 swollen in front, the part between the antennae being rounded and not 

 furrowed in the centre, the frontal area is less raised, and not truncated 

 at the apex, the antennal fovea is very distinct, while the curved 

 furrows which come down on either side of the antennal fovea, so 

 conspicuous with glutinosce and miliaris, are scarcely noticeable ; the 

 cenchri are smaller, and the antennae thinner. 



