334 Annals Entomological Society of America [Vol. V,. 
black. The head is black except a narrow streak extending downward 
from the emargination of the eyes along the edge of their lower lobes 
and a narrow line behind the eyes which are yellow. The mandibles 
except their edges and tips are ferruginous. The antenne are black, 
tinged with ferruginous beneath. The thorax is black except two 
triangular yellow marks on the pronotum and a transverse yellow band 
on the postscutellum. The legs are black with a very faint ferruginous 
tinge and their spines are ferruginous. The first and second segments 
of the abdomen are black or ferruginous black and the venter of second 
is slightly tinged with ferruginous. The dorsum of each of the other 
segments of the abdomen is yellow, their margins ferruginous-brown 
except the last which is nearly all of this color. The undersides of the 
last named segments are ferruginous-brown, faintly mottled with yel- 
low. The edges of the segments behind the first are fringed with grey- 
ish yellow hairs, with the remainder of the body and legs sparsely 
clothed with grey hairs except on the clypeus where they are yellowish 
ferruginous. 
The above description was made from a specimen now in the 
collection of the American Entomological Society at Philadel- 
phia. It was taken in Nevada. 
It may be unsafe to draw any conclusions from the study 
of a single specimen. The writer is of the opinion however 
that the specimen here described though differing in a few 
minor details, is Scolia otimita Saussure, and that the females. 
described as Scolia fulviventris will ultimately prove to be the 
females of this species. 
Scolia ridingsii Cresson. 
Scolia ridings. CRESS., Proc. Ent. Soc. Phila., 1V, 1865, p. 445, No. 1 9. 
The type is in the collection of the American Entomological 
Society at Philadelphia. 
Cresson describes the species as follows: 
“ Scolia ridingsii, n. sp. 
“‘Ferruginous; sides of prothorax, scutellums, and a large spot on 
each side of four basal segments of abdomen above, luteous; wings. 
deep yellow, the apical margins broadly fuliginous with a beautiful 
violaceous reflection, and a dark cloud beyond the marginal cell. 
““Female.—Ferruginous, clothed with fulvous or golden-yellow 
pubescence, closely and rather deeply punctured; the sinus of the eyes. 
and the outer orbits, sometimes luteous, and in one specimen extending 
entirely across the occiput; mandibles piceous at tips; antennz piceous, 
the two or three basal joints ferruginous. Thorax: sides of the pro- 
thorax, a spot on the pleura, scutellum and postscutellum, and a spot 
on each side of the metathorax, sometimes much reduced, luteous; the 
