268 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Ser. 
der, nearly straight sides and the eves of moderate size and 
situated in front of the middle. Mandibles rather convex, 
with two large apical and several minute and rather irregular 
basal teeth. Clypeus short, flat, with the anterior border 
deeply notched in the middle. Frontal area triangular, not 
impressed ; frontal carinz short, subparallel in front, slightly 
diverging behind; median dorsal groove shallow, running 
only from the occipital excision to the middle of the head. 
Antennz slender, scapes curved but not flattened at the 
base, only slightly thickened at their tips, which nearly reach 
the posterior corners of the head; all the funicular joints 
distinctly longer than broad; club slender, shorter than the 
remainder of the funiculus. Thorax rather small; pronotum 
very convex, broadest through the humeri, which are 
rounded; mesonotum in profile sloping, with a strong, short, 
transverse convexity in the middle; epinotum long, its base 
straight in profile, fully 114 times as long as the declivity, 
which is concave; spines short, slender, longer than broad 
at their bases, shorter than their distance apart at the base, 
directed backward and upward and very slightly outward. 
Petiole narrower in front than behind through the node, 
which in profile has a long, concave anterior and short, 
feebly concave posterior slope and rather acute summit; seen 
from behind the superior border of the node is deeply notched 
in the middle. Postpetiole scarcely a fourth again as broad 
as the petiole, broader than long, transversely elliptical, with 
rounded sides and dorsal surface. Gaster as large as the 
head, of the usual shape. Legs rather slender, femora only 
feebly incrassated in the middle. 
Shining; mandibles coarsely punctate; sides of clypeus and 
anterior half of the head longitudinally rugulose; remainder 
of head smooth and shining, with minute, scattered, piligerous 
punctures. Pronotum transversely rugulose; mesonotum, 
epinotum, petiole and postpetiole subopaque, finely and 
densely punctate; gaster and legs shining, with sparse piliger- 
ous punctures. 
Whole body, including the legs and antennz, covered with 
moderately abundant and rather coarse yellow hairs, varying 
in length but longer and more erect on the body, more 
reclinate on the scapes and legs. 
