390 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



Sternites 2 to 5 each with a strong apical fringe. Medio-apical 

 lobes of stipites slightly produced. The latero-apical lobes bowed 

 inward, so that they are nearly opposed to each other on their 

 apical halves, and not angulate on inner margin. Sagittae nearly 

 as in limnanthis. Length 6.5-9 mm. ; anterior wing 6-6.5 mm. 



T2/23es.— U.S.N.M. No. 59278. Holotype (female) and allotype, 

 near Strathmore, Tulare County, Calif., on Baeria tenella, March 

 29, 1937. Paratypes, 2 females, Mount Hamilton Range, Santa 

 Clara County, April 26, 1913 (J. C. Bridwell) ; 1 male, Elsinore, 

 Riverside County (Baker). 



Paratypes, in the collection of the University of California at 

 Riverside and Berkeley: 82 males, 9 females, from Strathmore, 

 March 28-29, 1937, and April 1, 1933 (Timberlake) ; 51 males, 

 24 females, Earlimart, Tulare County, on Baeria tenella, March 9, 

 1937 (Timberlake and Linsley) ; 1 female, Earlimart, on Baeria 

 gracilis, March 30, 1937 (Timberlake) ; 3 females, Kern County, 

 April 1939 (F. T. Scott) ; 2 males, 2 females, Davis, May 12, 

 1937 (J. J. DuBois) ; 4 females, Russelman Park, Contra Costa 

 County, on Baeria, April 26, 1942 (E. G. Linsley) ; 73 females, 

 near Hemet Lake, San Jacinto Mountains, Riverside County, on 

 Layia platyglossa. May 24, 1939 (Linsley) ; 1 female, Herkey 

 Creek, San Jacinto Mountains, on Layia platyglossa, June 3, 1939 

 (Timberlake). 



Other records. — A series from Hemet Lake is in the collection 

 of the U. S. National Museum. 



ANDRENA (HESPERANDRENA) DUBOISI. new species 



This species is allied to A. baeriae Timberlake, but it differs 

 from that and other species of the group in having the integu- 

 ment much more definitely tinged with green. The male differs 

 from baeriae also in having a large pale-yellow mark on the 

 clypeus. 



Female. — Integument tinged with dark green, which is more 

 pronounced on abdomen than on head or thorax. Mandibles dark 

 red at apex. Antennae black, the flagellum brownish beneath. 

 Legs black, or more or less reddish brown, with the tarsi more 

 rufescent. Tegulae shining rufopiceous, redder at apex. Wings 

 a little dusky fulvescent, the stigma and nervures pale fer- 

 ruginous ; the subcosta blackish. Facial f oveae moderately broad, 

 extending below level of antennae, and pale brownish ochreous 

 as seen from above. Subgenal coronet dark red. Explanate ex- 

 pansion of outer margin of mandible narrow, ferruginous, and 

 extending beyond the middle. Antennal joint 3 barely longer 

 than the next two joints together. Head and thorax minutely 



