NEW SPECIES OF ANDRENA FROM NORTH AMERICA. 309 



yellowisli grey pubescence ; clypeus with the surface not concealed, 

 shiny but minuteli/ tessellate, strongly and rather closely punctured, Avith 

 a low median longitudinal ridge ; front below ocelli strongly striate ; 

 vertex with irregular weak punctures ; first joint of flagellum longer 

 than second and third together; last joint feebly ferruginous; man- 

 dibles dark ; process of labrum strongJij produced, narrow, rounded at end, 

 shaped like the end of a finger ; thorax with long rather dense hair ; 

 iiiesotlwrax dull, minntelij riKjulose, ivith shallow punctures ; enclosure of 

 metathorax 'ininutclij rugulose,2}oorly defined; tegulffi shining dark brown; 

 wings yellowish hyaline ; nervures (except black subcostal nervure) 

 and stigma ferruginous ; first submarginal cell on cubital nervure 

 about as long as the two others together ; legs black, with whitish 

 pubescence, becoming shining fulvous on the tarsi ; hind tarsi fasco- 

 ferruginous ; abdomen fairly shiny, minutehj tessellate, the sparse iveuk 

 punctures hardlg noticeable ; hind margins of segments very narrowly 

 testaceous ; abdominal dorsum with thin scattered pubescence ; hind 

 margins of the second to fourth segments at sides with white pube- 

 scence, representing broadly interrupted hair-bands; margin of fifth 

 segment, and apex, thickly clothed with sooty or imrplish fuscous hair; 

 ventral segments fringed with white hair. 



Hah. Ithaca, N. Y., April 21st, 1890 (A. D. MacGillivray). 



An ordinary-looking species, best distinguished by the clypeus 

 and process of labrum. It is related to A. salicis, Eob., but is 

 larger, and differs in the process of labrum and the abdomen 

 without continuous bands. 



(8.) AnDRENA NIGROCiERULEA, n. Sp. 



?. Length 10^ to 11^ mm. ; dark blue, pubescence of thoracic 

 dorsum ochraceous, elsewhere black ; face covered with black hair ; 

 clypeus strongly punctured; antennas black ; mesothorax with shallow 

 punctures ; enclosure of metathorax minutely roughened, triangular, 

 not bounded by a ridge ; teguL'e shining black ; wings dusky ; nervures 

 and stigma piceous ; pleura with black hair ; legs black, with black 

 pubescence ; abdomen minutely tessellate, impunctate, apex densely 

 clothed with black hair. 



(? . Length 9 mm., much more slender; antennae very long, wholly 

 black ; wings clearer ; pubescence long and thin, all yellowish ivhite, 

 except black at sides of face and sides of occiput. Vertex and meso- 

 thorax dull. 



Hah. Olympia and Seattle, Washington State, in May (T. 

 Ivincaid). Many specimens. 



Differs at once from A. cerasifolii by the impunctate abdo- 

 men. From A. cceridea and A. geranii it differs by the black 

 hair at the apex of the abdomen. 



MesiUa, New Mexico, U.S.A., October 24th, 1897. 



