with descriptions of new species. 563 
testaceous ; outer edge of tegule rufo-testaceous. Hinder 
tibie armed with thick, widely separated, blunt, fuscous- 
coloured spines. Length 4% lin. LExpanse of wings, 
63 lin. 
Closely allied to C. unicolor, Smith, but readily dis- 
tinguished by the different colour of head and antenne, 
by the less dense pubescence on the thorax, by the less 
dense punctuation on the mesonotum, which has a 
blistered appearance, and by the metanotum having the 
central channel very much less developed. The spines 
on the hinder tibiz of wnicolor are also more numerous 
and more strongly developed. 
Mr. Blackburn tells me that the male has dentate 
antenne like the same sex in C. denticornis, Smith, &ce. 
Taken by Mr. Blackburn at an elevation of from 3000 
to 4000 feet on Mauna Loa, Hawaii. (No. 75). 
TENTHREDINIDA. 
Incalia hirticornis, Cameron. 
This genus wants entirely the “lanceolate cellule,” 
this being also the case with Syzygonia, Cephalocera, and 
one or two undescribed genera from Central America. 
Incalia, Syzygonia, and Brachytoma have short thick 
palpi, the maxillary being 4-jointed and the labial 38- 
jointed. I know also a genus from Central America 
which has only 8-jointed maxillary palpi, and the labial 
apparently with only one joint. 
Nematus scoticus, n. s. 
Black; head and thorax covered with a close pube- 
scence, which is especially long on the face; labrum, 
legs, and apex of abdomen dull testaceous ; mandibles 
brownish ; palpi dark testaceous; the greater part of 
cox, a line on the under side of anterior femora, one 
above and beneath on middle, and the greater part of 
posterior, black; apex of posterior tibie and tarsi 
fuscous. Vertex minutely punctured; antennal fovea 
long, broad, and moderately deep; frontal area in- 
distinct. Antenne as long as the abdomen, thickish, 
the third and fourth joints about equal, and not shorter 
than the ninth, which is sharply conical at apex ; black, 
brownish from the third jomt beneath, and _ slightly 
pilose. Mesonotum shining, scarcely punctured ; pleure 
