1916.] NATURAL SCIENCES OF PHILADELPHIA. 575 



Allotype Locality. — Nevada (H. K. Morrison). 



Length 6.5 mm.; body black, mostly covered with ochreous or 

 yellowish hair; head with its facial line : transfacial line :: 53 : 62, 

 axial line : temporal line :: 27 : 17, temples rounded, subtrapezoidal, 

 malar line : joint 3 of antennae :: 1 : 7, elevated portion of malar 

 space as in the female, front distinctly striated, shining, ocellocular 

 line : ocelloccipital line :: 12 : 5, face polished, distinctly punctured, 

 its punctures mostly adjoining or one puncture width apart, clypeus 

 convex, sculptured much like the face, somewhat elevated directly 

 above the apical margin, clypearea represented near the apical 

 margin, sculpture of the clypeus nearly hidden by the moustache, 

 labrarea with a broad emargination, polished, its width at base : 

 greatest length :: 8 : 4.5, width at apex : length down the middle :: 

 5:3, labrarea at base nearly half as wide as the labrum, the 

 latter with a fringe of pale golden hairs, joint 3 of antennae : 4 :: 7 : 5, 

 joint 4 and following joints from as long as thick to a little longer 

 than thick excepting the end joint which is distinctly nearly twice as 

 long as thick, flagel, almost straight in outline, antennae dullish and 

 blackish throughout, mandibles atypical, robust, extending a little 

 beyond the outer edge of the labrum and to the middle of its fellow, 

 black except for the apical half which is dull dark reddish, palpi 

 nearly typical; thorax as in the female except that the dorsulum is 

 mostly polished, legs blackish brown excepting the tarsi and hind 

 tibiae which are paler, hind metatarsi at most hardly wider than 

 mid metatarsi and nearly half as wide as hind tibiae at apex of the 

 latter; propodeum with its enclosure much as in the female, more 

 regulose and with an ill-defined median longitudinal carina, rest of 

 upper face as in the female, propodeal pleurae sculptured apparently 

 as in the female; abdomen as in the female except as follows: fifth 

 tergite with a hair band like the preceding tergites, apical edge of 

 all tergites with a pale stramineous border, hair band of second 

 tergite interrupted in the middle, second tergite with its elevated 

 portion down the middle : depressed portion :: 14 : 8, tergum with 

 pale appressed hairs on the second segment, anal process narrow, 

 truncate, pale stramineous at apex, its sides diverging, hair at apex 

 of abdomen of a golden hue. 



Andrena (Andrena) semifulva new species. 



Type. — No. 4,048. The Academy of Natural Sciences of Phila- 

 delphia. 



Type Locality. — California (E. Norton). 

 Related to A. (A.) saccata Viereck. 



