396 
NEW NORTH AMERICAN BEES 
an apical, whitish hair band, apical edge of first, second, third, and fourth 
tergites with a stramineous border, second tergite with its elevated portion 
dowm the middle : depressed ])ortion :: 15: 9, fifth tergite shining, reticulate, 
its punctures coarser but not as close together as on the preceding tergite, 
pygidium nearly planate, slightly elevated down the middle, turned up along 
the edge and nearly pointed at apex, tergum with inconspicuous, pale and dark 
appressed hairs in addition to the hair bands, funbria golden brown. 
Andrena (Ptilandrena) tonkaworum new species 
1904. Andrena melliveniris Howard, The Insect Book, pi. IV, fig. 3. 
Type. — No. 4074, The Academy of Natural Sciences of Phila- 
delphia. Type locality. — Texas. (No. 220, Belfrage.) 
Related to A. (P.) nivaloicles Graenicher. 
Female.' — Length 12.5 mm.; body black, mostly covered with pale ochreous> 
almost white hairs; head with its facial fine : transfacial line :: 70:88, axial 
line : temporal line :: 37: 20, malar line: joint 3 of antennae :: 2: 12, ocellocci- 
pital line : greatest diameter of lateral ocellus :: 9: 6, elevated portion of malar 
space virtually wanting, head covered with pale ochreous, almost white, hairs, 
front dullish, finely reticulated and closely j^unctured, not elevated into a welt 
along the fovea, fovea at most : ocellocular line :: 11: 16, foveal band virtually 
wanting, distance between fovea and ocelli : ocellocular line :: 4: 16, fovea 
hardly attenuated below its middle and continued to a j)lane distinctly above 
the antennal line, fovea filled wdth pale ochreous hairs, fovarea w'anting, face 
shiny, finely reticulate and with shallow punctures that are as many as four 
puncture widths apart, clypeus slightly elevated above the apical margin, 
convex, sculptured like the face except that the punctures are larger and Ijetter 
defined, clypearea present but poorly defined, clypeus thinly hairy, its sculp- 
ture not at all hidden by hairs, labrarea triangularly emarginate, its width 
at base : length dowm the middle :: 15:4, width at apex : length down the 
middle : : 5 : 4, greatest length : length dovm the middle : : 6 : 4, labrarea at base 
: distance between lower corners of clypeus :: 15:25, labrum with a fringe of 
golden hairs, labrum without a median longitudinal crista between the labrarea 
and apical edge of labrum, joint 3 of antennae : 4+5 :: 12: 8, joints 4 to 9 
thicker than long, the succeeding joints as thick as long or a little longer than 
thick except joint 12 which is apparently one and one-half times as long as 
thick, antennae dark brown to blackish throughout, mandibles typical, robust, 
extending to beyond the lower corners of the clypeus, black except for the apex 
and middle which are dark reddish, palpi nearly typical; thorax having dor- 
sulum covered with an abundance of ochreous, almost fulvous hairs, which are 
shorter than the ahnost 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 sculptured somewhat like the dorsulum, 
scutel hairy and sculptured much like the dorsulum, metanotum hairy and 
sculptured like the dorsulum except that the hairs are paler, tegulae pale 
stramineous, polished, wing base partly brownish, subcosta blackish brown, 
stigma pale stramineous, rest of veins paler stramineous, first recurrent vein 
received by the second submarginal cell before the middle and as near to the 
