384 
NEW NORTH AMERICAN BEES 
on the other tergites, pygidium nearly planate, without a shallow furrow on 
each side, nearly truncate at apex, tergum with inconspicuous, pale appressed 
hairs in addition to the hair bands, fimbria pale ochreous or pale golden. 
Andrena (Andrena) mellitarsis new species 
Type. — No. 4057, The Academy of Natural Sciences of Phila- 
delphia. Type locality. — Nevada. (H. K. Morrison.) 
Kelated to A. (A.) thaspii Graenicher. 
Male. — Length 8.5 mm.; body black, mostly covered with whitish hair; 
head with its facial line : transfacial line :: 44: 56, axial line : temporal line :: 
23: 13, temples rounded, subtrapezoidal, malar line : joint 3 of antennae :: 
2: 7, elevated portion of malar space much shorter than the depressed portion, 
head covered with whitish hairs except along the inner eye margin, upper eye 
margin, and outer eye margin above the middle of temples and on upper half of 
front where the hairs are black, front rather coarsely, indefinitely reticulated and 
sculptured, partly longitudinally striate, fovea narrow, ocellocular line : occel- 
loccipital line :: 11: 4, face shiny, distinctly punctured, its punctures from one 
to three puncture widths apart, clypeus slightly convex, clypeus apparently 
slightly elevated 'above apex more shiny and more distinctly coarsely and 
closely punctured than the face, clypearea wanting, sculpture of the clypeus 
not hidden by the moustache, labrarea with a narrow rounded shallow emar- 
gination, polished, its width at base : greatest length :: 5: 4, width at apex: 
length down the middle :: 3.5 : 3, labrarea at base apparently one-third as wide 
as the labrum, the latter with a fringe of pale golden hairs, joint 3 of antennae 
: 4 :: 7: 6, joint 4 as long as thick, the following joints from a little longer than 
thick to nearly one and one-half times as long as thick^ dullish, flagel somewhat 
undulate in outline, antennae blackish throughout, mandibles atypical, rather 
slender, extending beyond the outer edge of the labrum and to the end of the 
basal half of their fellow, black except for the apical third which is dark reddish, 
palpi nearly typical ; thorax covered with an abundance of whitish hairs, hairs 
of dorsulum seemingly shorter than hair of mesopleura, dorsulum dulUsh, 
finely reticulated and sparsely punctured, the punctures shallow and from one 
to five puncture widths apart, mostly two or three puncture widths apart, 
notauli represented by a shiny line, mesopleura dullish with whitish hairs 
throughout, finely reticulated and sparsely punctured like the mesonotum but 
not so obviously, scutel hairy and sculptured much like the dorsulum, metano- 
tum hairy and densely sculptured, not so definitely sculptured as the dorsulum, 
tegulae dark brown, polished, wing base mostly pale stramineous, partly 
brownish, subcosta dark brown, rest of veins pale brownish stramineous, stigma 
stramineous with blackish or dark hairs, first reciu'rent vein received by the 
second submarginal cell beyond the middle and a little nearer to the second 
transverse cubitus than the first transverse cubitus is to the stigma on the 
radial vein, nervulus received by the median vein, forming an acute angle with 
the second abscissa of the median vein, membrane with uniformly pale brown- 
ish stramineous tinge, legs blackish brown excepting the hind metatarsi which 
are pale yellowish stramineous, legs covered with whitish hairs, hind metatarsi 
at most hardly wider than mid metatarsi and nearly half as wide as hind tibiae 
