570 Mr. Camerof™ notes on Hymenoptera, 
terior wings appendiculated ; tegule deep black. Length 
nearly 4$ lin. 
The dark rufescent body and the black head and pleure 
readily separate this species. 
Rare. Salen, Mull; June. 
17. Tenthredopsis Saundersi, n. s. 
Dark testaceous ; mandibles, labrum, clypeus, scutellar 
spots, yellow; sides and lower part of thorax (save a 
dark testaceous splash on sternum), cox, trochanters, 
base of hinder femora, the middle suture on mesonotum, 
metanotum, base and apex of abdomen, and a triangular 
mark in centre of intermediate segments, black ; hinder 
tibiz almost piceous; apex of tibiw, base and apex 
of tarsi blackish, the second, third, and fourth joints 
white. Antenne fuscous; clypeus slightly incised. 
Wings hyaline ; costa testaceous ; stigma fuscous, white 
at the base. Calcaria short, not reaching to middle of 
metatarsus. Length 4 lin. 
Similar to 7’. nigriceps, but it differs in being smaller 
and narrower, in having the lower part of the head the 
same colour as the upper, in the clypeus being slightly 
incised at the apex, the spurs shorter, tarsi paler, &e. 
A single specimen in Shuckard’s collection. 
18. Tenthredopsis dorsivittatus, n. s. 
Luteous ; labrum, clypeus, orbits of the eyes, a spot 
behind the eyes, a line on pronotum, scutellar spots, and 
a line on base of abdomen, bright yellow; the suture on 
pleure, the greater part of metanotum and base of 
abdomen, and a broad band, usually more or less inter- 
rupted on middle segments, on back of abdomen, and the 
sheath, deep black ; the four anterior coxe dark luteous, 
more or less black and white ; hinder coxe black, spotted 
with brown and white; trochanters pale, a black spot 
beneath ; hinder tarsi with the joints more or less 
fuscous. Wings hyaline; stigma white at the base. 
Female. Length 33—4$ lin. 
A Scotch specimen has the antenne entirely luteous, 
and the black band on abdomen very faintly indicated, 
the tarsi scarcely infuscated, the space surrounding the 
ocelli, and the middle suture on mesonotum, black. An 
