386 
NEW NORTH AMERICAN BEES 
puncture widths apart, clypearea very narrow but conspicuous, clypeus thinly 
hairy its sculpture not at all hidden by hairs, labrarea funnel shaped in outline, 
rounded at aj)ex, its width at base ; length down the middle 13: 9, width at 
apex : length down the middle :: 2:9, labrarea at base a little more than half 
as wide as the labrum, the latter with a fringe of brovmish hairs, labrum with a 
poorly developed median longitudinal crista between the labrarea and apical 
edge of labrum and closely punctured, joint 3 of antennae : 4+5 :: 12: 12, 
joints 4 and 5 thicker than long, the succeeding joints as thick as long except 
joint 12 which is distinctly longer than thick, antennae blackish browm through- 
out, mandibles typical, robust, extending near to the outer edge of the labrarea, 
black except for the apical fourth which is dark reddish, palpi nearly typical; 
thorax with short, stiff, dense and inconspicuous hairs on the dorsulum, meso- 
pleura with long rather sparse hairs, dorsulum dullish, finely, indistinctly reticu- 
lated and vdth distinct, adjoining or nearly adjoining punctures, notauli repre- 
sented by a shiny line, mesopleura sculptured somewdiat like the dorsulum but 
not so closely j)unctured, scutel hairy and sculptured much like the dorsulum, 
metanotum hairy and sculi)tured like the dorsulum except that the sculpture is 
denser and less distinct, tegulae dark brown, polished, indistinctly reticulated in 
part, wing base partly blackish brown, subcosta and stigma blackish brown, 
rest of veins nearly as dark as the stigma, first recurrent vein received by the 
second submarginal cell beyond the middle, a little farther from the second 
transverse cubitus than the first transverse cubitus is to the stigma on the radial 
vein, nervulus nearly exactly interstitial and forming an acute angle with the 
first abscissa of the discoidal vein, membrane uniformly deep brown, legs black- 
ish except for the tarsi which are more or less dark browm, legs covered with 
brownish and black hairs, scopa atyj)ical, its hairs black throughout, nearly 
erect and mostly apparently longer than the greatest width of hind tibiae; 
propodeumwith its enclosure well defined, shiny, indistinctly rugulose and with 
irregular coarse rugae on each side of a median longitudinal carina, rest of 
upper face of propodeum coarsely reticulated, and covered with fine long hair, 
propodeal pleura finely reticulated, with sparse shallow pits and not ahnost hid- 
den by the floccus; abdomen with its tergum shiny and sculptured much like 
the clypeus but with smaller more sharply defined punctures, the punctures 
from nearly adjoining to three puncture widths ajjart on the first tergite, the 
punctures not closer on the succeeding tergites, second, third and fourth tergites 
without an apical hair band, apical edge of first, second, third and fourth 
tergites concolorous with the rest of the blackish brovm tergite, second tergite 
with its elevated portion dowm the middle : depressed portion :: 24: 13, fifth 
tergite shiny, reticulate, its punctures not so clearly defined as on the other 
tergites, pygidium nearly planate, with a shallow furrow on each side, nearly 
pointed at apex, tergum with inconspicuous appressed black hairs, fimbria 
black. 
Andrena (Andrena) perezana thaspiiformis new race 
Type. — No. 4052, The Academy of Natural Science.s of Pliila- 
delphia. Type locality. — Southern California. (H. K. Morri- 
son.) 
