410 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



collection of the University at Berkeley (paratypes) and River- 

 side (types and paratypes), from which a series of paratypes 

 has been transferred to the U. S. National Museum, No. 59286. 



ANDRENA (THYSANDRENA) BLANDULA, new species 



Similar to A. dissimulans but distinguishable by the longer 

 erect hair of the abdomen, with but little indication of hair bands 

 on the middle tergites. 



Female. — Agreeing with A. dissimulans in most respects, but 

 differing as follows : Pubescence a little longer, especially on the 

 mesoscutum and tergum of abdomen. Tergites 1 to 4 with erect 

 hair, rather long on 1 and gradually decreasing in length toward 

 apex of abdomen. Hair at apex of tergites a little depressed but 

 not forming distinct hair bands. Facial foveae fuscous in frontal 

 view, but pallid, with a brownish tinge, as seen from above. Wings 

 slightly less dusky, with light red stigma and nervures. Basal 

 nervure slightly postfurcal. Second submarginal cell quadrate, a 

 little more than half as long as the third, and receiving the re- 

 current nervure slightly before the middle. Both species have 

 golden and reddish reflections on clypeus above the black anterior 

 border. Length 7.5 mm; anterior wing 6.8 mm. 



Type.—V.^.NM. No. 59287. Holotype (female) collected on 

 Mount Hamilton Range, Santa Clara County, Calif., April 26, 1913 

 (J. C. Bridwell). 



ANDRENA MISELLA, new species 



This species is similar to A. anisochlora Cockerell in size, color, 

 and very dull sculpture of the head and thorax, but they cannot 

 be closely allied. In the broad process of labrum, narrow foveae, 

 short and nearly straight floccus of sides of propodeum, and 

 small incomplete flocculus of hind trochanters, it agrees well with 

 A. merriami Cockerell, A. fulvinigra Viereck and Cockerell, and 

 A. nigrihirta (Ashmead) , but it differs in having the clypeus very 

 dull and impunctate, and the hair of the abdomen abundant and 

 erect. The merriami group is placed by Lanham near the sub- 

 genus Gymnandrena and probably will deserve recognition as a 

 subgenus when better known. 



Female. — Black, the abdomen faintly dark green. Mandibles 

 at apex and small joints of tarsi a little reddened. Flagellum 

 slightly brownish beneath. Tegulae dark castaneous at apex. 

 Wings dusky hyaline, stigma and nervures dusky brown, the 

 subcosta blackish. Head a little wider than long. Labrum short 

 and broad, with a transverse groove before the large, broadly 

 truncate basal process. Facial foveae rather narrow, parallel 

 sided, and reaching level of antennae. Antennal joint 3 about 



