374 
NEW NORTH AMERICAN BEES 
ish and finely reticulated except down the middle of its basal half where it is 
somewhat rugnlose, rest of upper face of propodeum sculptured somewhat like 
the mesopleura but duller, and covered with finer grayish hair, propodeal 
pleura reticulated, nearly polished, with sparse shallow punctures and nearly 
hidden by the almost white floccus; abdomen with its tergum shining, punc- 
tured and indistinctly reticulate, the punctures from nearly adjoining to three 
puncture widths apart on the first tergite, the punctures hardly sparser on the 
succeeding tergites, second, third and fourth tergites with an apical, whitish 
hair band that is interru{)ted in the middle of the second and third tergites, 
apical edge of first, second, third and fourth tergites with a pale stramineous 
border, second tergite with its elevated portion down the middle : depressed 
portion :: 20: 9, fifth tergite shining, indistinctly reticulate, its punctures not so 
close together as on the other tergites, pygidium slightly convex, without a 
shallow furrow on each side, nearly pointed at apex, indefinitely sculptured, 
tergum with inconspicuous, pale, appressed hairs, in addition to the hair bands, 
fimbria pale golden brown. 
Andrena (Andrena) Columbiana new species 
Type. — No. 4038, The Academy of Natural Sciences of Phila- 
delphia. Type locality. — Mission, British Columbia, Aug. 8, 
1904. (R. V. Harvey.) 
Related to A. (A.) coUetina Cockerell, of which it may prove to 
be a race. 
Female. — Length 9. .5 mm.; body black, mostly covered with pale ochreous 
hairs; head with its facial line : transfacial line :: 54: 70, axial line : temporal 
line : : 30 : 18, malar line : joint 3 of antennae : : 2 : 10, ocelloccipital line : greatest 
diameter of lateral ocellus :: 4: 5, elevated j)ortion of malar space nearly want- 
ing, head covered with pale ochreous hairs, front rather distinctly, longitudi- 
nally striate, not elevated into a welt along the fovea, fovea at most : ocellocular 
line :: 8: 13, foveal band present and at upper end of the inner eye- margin : 
ocellocular line :: 1: 13, distance between fovea and ocelli : ocellocular line 
: : 4 : 13, fovea slightly attenuated below its middle \\ here it is apparently only a 
little narrower than the greatest width of the fovea and continued to a point 
apparently a little above the clypeal line, fovea filled with pale ochreous hairs, 
hair of vertex and temples along the upper edge of the eye concolorous with the 
facial hairs, face mostly polished, partly indistinctly reticulate, with distinct 
punctures that are mostly adjoining or one or two puncture widths apart, 
clypeus slightly elevated aljove the apical margin, convex, sculptured like the 
face except that the punctures are larger and closer together, clypearea present, 
well defined, shiny and finely reticulated, clypeus thinly hairy, its sculpture not 
at all hidden by hairs, labrarea emarginate on its under surface, its wddth at 
base : length down the middle :: 12: 4, width at apex : length down the middle 
:: 7: 4, its greatest length : width at base :: 5: 12, labrarea at base seemingly a 
little more than half as wide as the labrum, the latter with a fringe of dark 
golden hairs, labrum apparently without a definite sculpture or structure be- 
tween the labrarea and the apical edge of labrum, joint 3 of antennae : 4-|-5 
