with descriptions of new species. 571 
English specimen is much darker coloured ; the black 
band on abdomen is represented on segments 8—d 
by a triangular black mark on each, but the black 
extends all over the upper surface of the basal and 
apical segments ; the hinder tibie and apex of femora 
are fuscous, and the four apical joints of posterior 
tarsi pale; the antenne pitchy, and the metapleure 
are not altogether black. 
A species intermediate between TJ’. inornatus and 
nigriceps ; from the former it may be known by having 
the metapleure black, the coxe blacker, and (as well as 
the trochanters) more distinctly marked with white, the 
antenne and spurs longer ; from the latter, by its longer 
antenne and spurs, lighter-coloured antenne, luteous 
tegule, pale trochanters, and entirely luteous femora. 
Apparently rare in England and Scotland. 
19. Tenthredopsis inornatus, n. 8. 
Dark testaceous ; mandibles, clypeus, labrum, scutellar 
spots, yellow; dorsum of abdomen with an interrupted 
black band; hinder tarsi fuscous; apical joints of an- 
tenn fuscous; vertex in centre, coxe, trochanters, and 
hinder femora at base, and metapleure largely marked 
with black. The middle suture on vertex is absent ; 
there is no distinct furrow between the ocelli, only a de- 
pressed space; frontal area depressed. Antennal fovea 
wide. Wings hyaline ; stigma white at the base. 
The male black; the labrum, clypeus, orbits of the 
eyes broadly, tegule and edge of pronotum yellowish 
white ; front coxz with a white spot on lower side; the 
remainder, and the posterior coxe and base of femora, 
black; trochanters pale, the rest of the legs and 
abdomen reddish, except the apex and a band in the 
centre of the latter, which are black. Length 44 lin. 
Compared with 7’. nassatus, it is smaller ; the antenne 
are shorter and thicker in the middle, with the third 
joint longer in proportion to the fourth; the colour 
is darker, the pubescence (especially on the mesonotum) 
is denser, the hinder tarsi are shorter in proportion to 
the tibiz, and the spurs shorter. Nassatus too wants the 
black on the legs and pleure, and the head projects 
more behind the eyes. Sordidus may be known from it 
by its longer and thinner antenne; the colour of the 
