with descriptions of new spectes. 569 
15. Tenthredopsis albomaculatus, n. s. 
Head with the labrum, clypeus, mandibles, and the 
orbits of the eyes broadly, white; the rest dull brown, 
save the sutures on vertex and the space surrounding the 
base of antenne, which are black. Antenne dull 
testaceous, darker above, especially at the apex, which is 
somewhat attenuated. Thorax black, a line on pro- 
notum white; mesopleure with a broad white mark ; 
metapleure lined with white; sternum for the greater 
part dull brown; sutures of mesonotum dull brown ; 
scutellar spots white. Abdomen dull testaceous, a broad 
black band down the back, a white transverse line at the 
base. Legs testaceous; coxe black, broadly lined with 
white at the sides and beneath ; hinder tarsi and apex of 
tibiz fuscous. Wings hyaline; stigma fuscous, white at 
the base. Length 4 lin. 
This is a somewhat larger insect than lividiventris ; 
the brownish colour on head and thorax is much more 
extended ; the marks on pleure are larger and clear 
white ; antenne paler; coxe almost wholly white, and 
the legs reddish without any black on them. 
Rare. Rannoch, in June. 
16. Tenthredopsis nigriceps, n. 8. 
Dark rufescent. Antenne, head below the hinder 
ocellus, prothorax beneath, mesopleure behind, meta- 
thorax, the greater part of the four anterior coxe, and 
all the trochanters, deep black; scutellar spots and 
cenchri yellow. The front tibize are paler than the rest 
of the legs, the base of middle femora, and the greater 
part of the posterior femora and coxe suffused with 
black; hinder knees black; posterior tarsi fuscous. 
Head and thorax covered with a close fuscous pube- 
scence ; sutures of the mesonotum and parapsides black ; 
labrum dirty white; palpi dark testaceous; coxe and 
apex of abdomen black. Antenne attenuated at the 
apex, longer than the abdomen, the third joint distinctly 
longer than the fourth ; spurs on hinder legs not reach- 
ing to middle of metatarsi. Wings hyaline; costa 
pale, except before stigma, where it is fuscous; stigma 
fuscous, white at the base; accessory nervure in pos- 
TRANS. ENT. soc. 1881.—PaRT Iv. (DEC.) 4B 
