54 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 
elliptical and black; the coxe of the fore-legs yellow; the 
pulvillus on all the legs black ; the compressed abdomen reddish- 
brown on the upper side, with a larger or smaller black-brown or 
black spot at the base of the first segment, and becoming paler 
at the edges—this spot is sometimes wanting; on the other 
hand, the end of the body and the under-surface of the abdomen 
are somewhat light coloured; the sheath of the ovipositor is 
intense black. 
“ All the flagellum joints of the thirteen-jointed antennz are 
longer than thick, and become gradually a little less thick to- 
wards the apex of the antennz; the first joint is the longest, the 
others practically agree in length; the three-jointed club is egg- 
shaped, and as long as the two foregoing joints taken together. 
The central part of the face is obliquely wrinkled, the forehead 
longitudinally wrinkled ; the vertex of the head, the prothorax, 
the mesothorax, and the scutellum are transversely wrinkled ; 
the post-scutellum, outlined by a fine deep line, is glossy and 
smooth, except at the base and along the longitudinal middle 
line, where it is finely punctured; the metanotum is finely 
punctured, with a prominent longitudinal keel in the middle, and, 
in the case of most examples, with a transverse ledge at the limit 
of its front third; the hind margin is glossy smooth, without 
sculpture. The face, mesonotum, all the coxa, the tibize and 
tarsi of the forelegs, and the middle and hind legs, are white- 
haired ; the vertex of the head and the forehead, the thorax, 
especially both sides of the furrows of the parrapsides, the 
scutellum other than the post-scutellum, the femora of the fore- 
legs, and the hind edges of the segments of the abdomen, are 
beset with longer or shorter black bristles. The ovipositor is as 
long as the body. The body-length of the female measures 
from 3°25 mm. to 3‘5 mm. (=roughly } to + of an inch). 
“The male is orange-yellow; antennz, reddish-brown; the 
pronotum has, in the middle of the front edge, a black transverse 
patch, which is somewhat elongated behind, in streak-like 
fashion, in the direction of the middle line, sometimes resolved 
into two spots or reduced to two points; the scutum of the 
mesonotum is reddish-yellow, and provided in front with a black- 
brown spot, paler behind, which sometimes only shows through 
the hind end of the pronotum more or less clearly ; the bases of 
the wings and the metanotum are black; the tarsi of the fore- 
legs, as well as the middle and hind legs, are reddish-yellow ; 
