BEES OF THE FAMILY ANDRENIDAE— TIMBERLAKE 383 



Types. — Holotype (female), Ensenada, Baja California, Mex- 

 ico, at flowers of Laijia, April 24, 1941 (Cockerell) and one para- 

 type (female) 10 miles north of Salis, Calif., on Layia glandulosa, 

 May 18, 1936 (E. G. Linsley), in the collection of the Citrus 

 Experiment Station. 



Two paratypes (females) with same data as above paratype, 

 in the collection of the University of California at Berkeley. Three 

 paratypes (females), Walnut Creek, Contra Costa County, April 

 19, 1913 (J. C. Bridwell) , in the U. S. National Museum, U.S.N.M. 

 No. 59274. 



ANDRENA (STENANDRENA) PALLIDIFOVEA (Viereck) 



Pterandrena pallidifovea Viereck, Can. Ent., vol. 36, pp. 222, 228, 1904 



(female; excluding male, p. 195). 

 Andrena plumifera Cockerell, Can. Ent., vol. 48, p. 393, 1916 (female). 



This is a common species on the Pacific coast, extending from 

 southern California to Washington, and inland to Salt Lake City, 

 Utah. It is a late vernal species and collects pollen from Com- 

 positae. In southern California it collects pollen from Ericameria 

 cooperi, Helianthus gracilentus, and from species of Layia, Erio- 

 phyllum, and Chaenactis. 



In the United States National Museum it is represented by 

 specimens from Pasadena, Calif., April 30, 1909; Arroyo Seco, 

 Pasadena, June 17, 1909 ; and near Pasadena, 1,200 feet, April 15, 

 1911 (F. Grinnell, Jr.). 



The male, associated with pallidifovea by Viereck, presumably 

 had light face marks, as it was included in the table of males of 

 Opandrena and Pterandrena. The true male of pallidifovea has 

 the face entirely dark and may be briefly characterized as follows : 



Male. — Dull black. Flagellum a little shining beyond the first 

 joint, brownish beneath. Antennal joints 3 to 5 subequal, 4 being 

 slightly shorter than the others and 3 slightly longer. Face and 

 mesonotum opaque, the clypeus roughened by close, shallow punc- 

 tures, the mesonotum impunctate. Vertex substriate between 

 ocelli and eyes. Abdomen dullish, with extremely fine, dense seti- 

 gerous punctures. Pubescence ochreous to f ulvo-ochreous, lighter 

 on the vertex and mesonotum. Hair of head and thorax long, 

 erect, rather dense on face below antennae and on cheeks. First 

 tergite and sides of the second with moderately long, erect light 

 hair. Tergites 2 to 4 rather narrowly fasciate at apex with whit- 

 ish hair, the band on 2 interrupted medially. The light hair at 

 apex of tergite 5 longer and thinner than that forming the bands 

 of preceding segments. Disk of tergites 2 to 5 densely covered with 

 fine, very short, subdepressed hair, which is blackish except at 

 base of tergite 2. Apical fimbria a little tinged with brown. Legs 



