1916.] NATURAL SCIENCES OF PHILADELPHIA. 597 



hairs, fimbria blackish brown, pygidium blackish, slightly convex 

 near apex and nearly pointed. 

 Andrena (Ptilandrena) nubilifascia new species. 



Type. — No. 4,027. The Academy of Natural Sciences of Phila- 

 delphia. 



Type Locality.- — Southern California (H. K. Morrison). 



Related to A. (P.) pallidifovea Viereck. 



Female. — Length 11.5 mm.; body black, mostly covered with 

 whitish hairs, compared with the original description of A. (P.) 

 pediculihirta Viereck, this species differs as follows: head with its 

 facial line : transfacial line :: 35 : 23, covered with whitish hairs 

 except on the labrum and mandibles where the hairs are brown- 

 ish, fovese with whitish hairs throughout, separated from the eye 

 margin near its upper end by a nearly bare band that is nearly 

 one-fourth as wide as the greatest foveal width, front not elevated 

 along the inner edge of fovea, joint 3 of antennae : 4 + 5 :: 10 : 9, 

 joints 4 and 5 apparently thicker than long, the succeeding joints 

 longer than thick, face nearly as closely and nearly as distinctly 

 punctured as the clypeus, the punctures seemingly at most two 

 puncture widths apart, clypeus indistinctly reticulated, and cov- 

 ered with distinct adjoining or almost adjoining punctures, clypeus 

 hardly elevated above the apical margin, labrarea a little more 

 than three times as wide at base as long down the middle and a 

 little more than half as wide at apex as at base, malar line : joint 

 3 of antennae nearly :: 1 : 10; thorax covered with thin whitish 

 hairs, dorsulum dullish, sculptured much like the clypeus but with 

 its reticulation more distinct, notauli represented by a shining line, 

 scutel mostly more densely sculptured than the dorsulum, its an- 

 terior edge shining, metanotum sculptured much like the posterior 

 half of the scutel, nervulus received by the first discoidal cell, nearly 

 interstitial, forming an acute angle with the first abscissa of the 

 discoidal vein, legs covered with dark brown to blackish hairs except 

 on the femora where most of the hair is pale ochreous and on fore 

 tarsi where it is pale golden brown, scopa with blackish brown 

 branched hairs throughout, greatest width of mid metatarsi : greatest 

 width of hind metatarsi :: 11 : 12; propodeum with its upper aspect 

 outside the enclosure sculptured almost like the dorsulum but not 

 so distinctly punctured; abdomen almost polished and distinctly 

 punctured, with three thin white fascia? outside of which the tergites 

 are covered with blackish brown hair excepting the first and second 

 and extreme sides of the third and fourth tergites where there is more 



