BEES OP THE FAMILY ANDRENIDAE— TIMBERLAKE 391 



tessellate, moderately dull. Frons distinctly striate. Clypeus, sides 

 of face below antennae, and mesoscutum with fine, shallow, mod- 

 erately close punctures. Scutellum impunctate. Upper part of 

 mesopleuron subopaque. Basal area broadly triangular, its sculp- 

 ture minute and a little less rough than that of remainder of 

 dorsal surface of propodeum. Abdomen minutely tessellate, rather 

 shining and impunctate. Pubescence ochreous, rather short and 

 moderately sparse, being densest on the face and cheeks. Abdomen 

 with fine, short, appressed light pubescence, very thin on mid- 

 dle of disk of tergite 2, and becoming longer and denser at apex 

 of tergites 2 to 4 to form bands. Band on tergite 2 thinner or 

 interrupted at the middle. Apical fimbria, hair at apex of hind 

 femora, at apex of middle tibiae, and at base of hind tibiae on 

 dorsal margin, slightly tinged with brown. Basal nervure dis- 

 tinctly postfurcal. Second submarginal cell about half as long as 

 the third, and receiving the recurrent nervure at or near middle. 

 Length 5.5-8 mm. ; anterior wing 5-6.1 mm. 



Females from along the coast of California (Walnut Creek, 

 San Francisco, and San Diego) have the facial foveae more pallid 

 than in the type series from Davis, and have the apical depression 

 of tergites rufotestaceous to whitish. 



Male. — Similar to female. Disk of clypeus pale yellow. Pubes- 

 cence paler and longer than in female, dense and white on face, 

 and nearly concealing the surface of clypeus. Hair of mesoscutum 

 long and erect. Apical bands of abdomen thin or, usually, obso- 

 lete. Disk of tergite 1 with long, erect hair. Hair of venter 

 rather long and erect, the apical margin of segments 2 to 5 

 each with a very short apical fringe. Antennae barely longer 

 than in the female, the flagellum stout. Joint 3 about equaling 

 4 plus 5, which are both broader than long. Process of labrum 

 about twice as broad as long and more prominent than in female. 

 Medio-apical lobes of stipites together forming a subacute angle. 

 Latero-apical lobes of stipites geniculate before the middle, 

 strongly bent downward, and pallid at apex. Apical part of 

 sagittae very slender and becoming slightly expanded at the ex- 

 treme apex. Length 5-7.5 mm. ; anterior wing 4.5-6 mm. 



Types. — U.S.N.M. 59279. Holotype (female) and allotype, 

 Davis, Calif., presumably at flowers of Baeria, May 12, 1937 

 (J. J. DuBois) ; 3 females (paratypes) , Walnut Creek, Contra 

 Costa County, April 17, 1913 (J. C. Bridwell) ; 1 female (para- 

 type), San Francisco (Bridwell) ; and 1 female (paratype), San 

 Diego. 



Many paratypes (82 males, 108 females) from Davis in the 

 collections of the Citrus Experiment Station and of the Uni- 

 versity of California at Berkeley. 



