THE CANADIAN ENTOMOLOGIST 393 



Hah. — Ckiremont, California, {Baker). Pomona coll. 160. 

 The mesothoracic bands or stripes distinguish this from T. nigriceps 

 Smith, and the marking of the first abdominal segment is different, 

 though that of the second agrees with nigriceps. 



Nomia arizonensis angelesia Ckll. 

 Claremont (Baker). Pomona coll. 196. 



Andrena plumifera, n. sp. 



9. — Length about 10 mm ; rather robust, black; head and 

 thorax with abundant ochraceous hair, pallid on face, cheeks and 

 under side of thorax, becoming fuhous on thorax above; facial 

 quadrangle broader than long; process of labrum broadly rounded; 

 clypeus entirely dull, hairy, the minute punctures forming trans- 

 verse lines, no median ridge; facial foveae broad, ochreous, extending 

 below level of antennae, the lower end not sharply defined; third 

 antennal joint 416 microns long, 4 and 5 together 365, 4 to 6 

 together 560; flagellum very obscurely brownish beneath; meso- 

 thorax and scutellum dull and granular; area of metathorax small, 

 rather conspicuously rugose; tegulse piceous with a rufous spot; 

 wings greyish; stigma dark reddish, slender, lanceolate, not over 

 half diameter of marginal cell; b. n. meeting t. c; second s. m. 

 receiving first r. n. a little beyond middle; third s. m. very long; 

 legs black, with pale hair, brown on middle and hind knees; middle 

 and hind basitarsi broad; scope of hind tibiae ample, dense, strongly 

 plumose (collecting pale yellow pollen) ; abdomen somewhat 

 shining, with a microscopically reticulate surface and excessively 

 minute punctures; segments 2 to 4 with broad, dense white hair- 

 bands, that on 2 broadly and abruptly interrupted in middle; apex 

 with very pale purplish-grey hair, almost a lilac shade. 



Ilab — Claremont, California (Baker; Pomona coll. 199). 

 A species of the subgenus Pterandrena, running in Viereck's key 

 (Canad. Entom., 1904, p. 227) to A. nudimediocornis Vier., which 

 differs by the distinctly punctured dorsulum. Superficially, 

 it looks exactly like A. hridivelli Ckll., but the surface of the abdo- 

 men is entirely different. It is smaller than A. pecosana Ckll., 

 with the clypeus quite different. 



