380 
NEW NORTH AMERICAN BEES 
Related to A. (.4.) trizonata (Ashmead.) 
Female. — Length 8.5 mm.; body black, mostly covered with whitish hairs, 
head with its facial line : transfacial line :: 49; 58, axial line : temporal line :: 
23: 13, malar line : joint 3 of antennae :: 2.5: 7.5, ocelloccipital line : greatest 
diameter of lateral ocellus :: 3:4, elevated portion of malar space nearly as 
long as depressed portion, head covered with whitish hairs, front rather dis- 
tinctly, longitudinally striate, not elevated into a welt along the fovea, width 
of fovea at most : ocellocular line :: 6: 12, foveal band present and at upper 
end of the inner eye margin : ocellocular line :: 1: 12, distance between fovea 
and ocelli: ocellocular line ;: 4.5: 12, fovea attenuated below its middle where 
it is a little narrower than the greatest width of the fovea, the latter continued 
to a plane apparently a little l)elow the antennal line, upper half of fovea 
mostly filled with pale brownish hairs, lower half with whitish hairs, fovarea 
wanting, face shiny, finely reticulate, with rather poorly defined punctures 
that are from adjoining to three punctures widths apart, clypeus distinctly 
elevated above the apical margin, convex, more distinctly reticulated than the 
face, with its punctures wider apart and larger than on the face, apical half 
more shiny than the face and with its anterior margin nearly polished, clypearea 
wanting, clypeus thinly hairy, its scidpture not at all hidden by hairs, labrarea 
truncate, its width at l)ase : length down the middle :: 11:4, width at apex; 
length down the middle, : 3.5 : 4, labrarea at base : distance between lower 
corners of clypeus :; 11 : 16, labruni with a fringe of golden hairs and without a 
median longitudinal crista between the labrarea and its apical edge, joint 3 of 
antennae : 4+5 ;: 7.5: 7, joints 4 and 5 thicker than long, the succeeding joints 
from as long ^.s thick to a little longer than thick except joint 12 which is dis- 
tinctly longer than thick, antennae blackish throughout except the under side of 
the flagel which is dark brown, mandibles typical, robust, extending to the 
outer corners of the clypeus, black except for the ajiical half which is mostly 
dark reddish, palpi nearly typical; thorax covered with an abundance of 
whitish hairs which are nearly as long on the dorsulum as the whitish hairs on 
the mesopleura, dorsulum dullish, finely reticulated and punctured like the face 
but more distinctly so, notauli represented by a shiny line, mesopleura finely 
reticulated, more sparsely and less distinctly punctured than the dorsuhmi, 
scutel hairy and sculptured much like the dorsulum, metanotum hairy and 
densely sculptured, tegulae brownish stramineous, partly polished, wing base 
partly blackish brown, subcosta blackish brown, stigma reddish, rest of veins 
dull stramineous, first recurrent vein received by the second submarginal cell 
before the middle and not as near to the first transverse cul)itus as the first 
transverse cubitus is to the stigma on the radial vein, nervulus interstitial and 
forming an acute angle with the first abscissa of the discoidal vein, membrane 
with a uniform yellowish brown tinge, legs blackish brown except for the tarsi 
which are more or less dark brown, legs covered with whitish and golden hairs, 
scopa nearly typical, more ample, its hairs whitish, except at V)ase and apex 
where they are brownish, width of hind metatarsi at most : greatest width of 
mid metatarsi :: 7:6; propodeum with its enclosure poorly defined, its basal 
half mostly rugulose, its apical half mostly dullish and finely reticulated, rest of 
