376 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



segment less ridgelike. The manuscript name givert by Viereck 

 has been adopted for this subspecies. 



Female. — Agreeing with A. calif ornica calif ornica in most 

 characters, but hair of front and middle tibiae and tarsi and of 

 hind basitarsi more or less pale brownish, and having only a trace 

 of darker hairs near the knee plate at base of hind tibiae ; stigma 

 and nervures also dark ferruginous, with only the subcosta 

 piceous. Length 8.5-9 mm. ; anterior wing 7.5-7.8 mm. 



Types. — Holotype, female (U.S.N.M. No. 28534), Dunsmuir, 

 Siskiyou County, Calif., early June (Wickham) ; paratype (fe- 

 male) Mendocino County (E. R. Leach). 



ANDRENA (PTERANDRENA) PLUMISCOPA. new species 



A Pterandrena of a dark-green color and a very dull sculpture. 

 Other green or blue-green Andrena of the Pacific coast, with a 

 plumose scopa, such as complexa Viereck, suavis Timberlake, and 

 francisca Viereck, have narrow facial f oveae, a looser tibial scopa, 

 and no light face marks in the male. These are referred more prop- 

 erly to Ptilandrena. 



Female. — Dark green, this color being most distinct on frons, 

 vertex, mesonotum, and tergum of abdomen. Clypeus and labrum 

 black. Legs and venter dark brown to nearly black, the second 

 ventrite with a greenish tinge. Tibial spurs pale testaceous. Man- 

 dibles dark red on apical half, piceous at base. Flagellum broadly 

 ferruginous beneath beyond its second joint. Tegulae testaceous- 

 brown at apex and dark toward base. Wings strongly dusky, the 

 stigma and nervures dark ferruginous, the subcosta blackish. 

 Pubescence pale ochreous or pale brownish, becoming more 

 whitish on face, cheeks, and underparts of thorax; that on the 

 mesonotum moderately dense and somewhat shorter. Floccus of 

 propodeum long, curled, plumose, strongly descending along an- 

 terior margin of the pleuron ; surface of propodeal pleura other- 

 wise with a few scattered long erect hairs. Hair of abdomen 

 whitish, moderately dense, short and erect on tergites 3 and 4, 

 thence gradually lengthened toward the base. Hair at apex of 

 tergites 2 to 4 depressed, forming narrow pale fasciae. Apical 

 fimbria and tuft of hair at apex of hind femora above dark seal 

 brown. Hair of femora white, the flocculus of hind trochanters 

 pure white, very long, and ample. Hair on outer side of front 

 and middle tibiae tinged with brown. Scopa of hind tibiae short 

 and compact, with fine, soft, distinctly plumose hair, that along 

 dorsal margin less than half as long as width of tibia. Scopal 

 hairs white, becoming dark chocolate brown above, then blackish 

 at base. Facial f oveae whitish, but seal brown at upper end. Head 



