318 FTemiplera-fleteroptera. 
sprinkled with fine brown spots, posterior femora elongate, 
brown, posterior tibize very long and slender. 
L. 44 mm. 
On Ovorylus and Salix; Reigate, Wimbledon, Woking, 
Hastings; Headley Lane, Billups ; Glanvilles Wootton, 
Dale; Bickleigh, Devon, Bignell; Caterham, Tilgate, 
Darenth, Champion ; Wickham, Tunbridge Wells, Douglas 
& Scott; Netherfield, Battle, Frant, Stevenage, Barnet, 
Shalford, Butler ; Lastingham, Birch Wood, Marshall ; 
Norfolk, Edwards. 
PLAGIOGNATHUS, /ieb. 
Under this name I have included as subgenera four genera 
as defined by Dr. Reuter. But the genus in the wider 
application that I have given to it seems to me to be definite, 
whereas the characters whereon the subgenera are based 
are to my mind far from being so; and having in view the 
small number of our British species, I think it is better to 
keep them all together. The genus in this sense may be 
known from the others with the hook-like nerve to the 
wing-cell, by the combination of the following characters : 
the shining and finely pubescent surface, without de- 
cidnous fragile hairs, the simple antennee, and the black- 
spined tibiz. In form they may be oval or oblong-oval, and 
in some species of the subgenus Agal/iastes both sexes 
are dimorphous. We have nine species in this country, 
out of thirty-seven recorded by Puton as Palzearctic. 
(2) 1. Vertex with a distinctly raised carina, an- 
tenn short, with the second joint longer 
than the third and fourth together. 
(Subg. Sthenarus, Fieb.). 3 . RoseErt. 
Vertex ‘without Bh distinetly-raised earma, 
third and fourth joints of antenni to- 
gether longer than the second. 
(8) 3 Male more parallel- sided and elongate than 
the female, femora pale, spotted or lined 
with black, or surface clothedwith silvery 
whitehairs. (Subg. Plagiognathus, Fieb.) 
(5) 4. Surface clothed with silvery hairs. . ALBIPENNIS. 
po 
(1) 
