26 Mr. T. D. A. Cockeiell on Bees. 



agree with Robertson's very brief desci-iption of liis harhatus. 

 I do not positively assert that the species are the same, not 

 having compared specimens. 



Prosopis. 



At Pecos, New Mexico, June 9, 1903, I collected at flowers 

 of Salix four males, wliich prove to be two F. mesillw, (Jkll., 

 and one each of P. divergens, Ckll., and P. asinina, Ckll. & 

 Casad. P. divergens is new to New Mexico ; the specimen 

 has clearer wings than the type. 



PSEUDOPANUEGUS, Ckll, 1897. 



Protandrenopsis, Crawford, 1903, is the same genus. 

 P. f rater cuius (Ckll.) is apparently a valid species, and not a 

 synonym of rugosus as asserted by llobertson. 



Paeudopanurgus pectidellus, sp. n. 



? . — Length slightly over 7 mm. 



Similar to P.fraterculus, but differing as follows : — Facial 

 fovese longer and less divergent from the eye-margin above ; 

 lips of antennae bright ferruginous ; vertex very closely 

 l)unctured all over, without tubercles, but with the sides 

 laintly elevated ; mesothorax narrower^ much more closely 

 punctured ; wings much paler, strongly dusky only at apex ; 

 stigma snialkr ; the very short basal enclosure of metathorax 

 strongly transversely ridged, with the area below it strongly 

 shining ; abdomen not so broad. From P. mexicanus 

 (Crcsson) it differs by having the abdomen hairy only at the 

 extreme apex ; from P. scaber (Fox) by having the clypeus 

 densely punctured all over, without a central line, the 

 dorsulum closely punctured, &c. The tegulse have a dark 

 reddish spot, and the hind border of the prothorax and 

 tubercles are margined with short but dense white pile. The 

 labium is shining, with a delicate longitudinal keel. 



JJub. JSoledad Cafion, Organ Mts., New Mexico, at flowers 

 of lectis papyosa^ o ? , Aug. 15 (C. 11. T. Toivnseud). 

 They were taken in company with Perdita solitaria, Ckll. 



Andrcna Vierech', sp. n. 



? . — Length about 10 nmi. 



Black, with ochraccous pubescence; antenna3 wholly black, 

 joint o about as long as 4: + 5; base of anteniuu surrounded 

 with long ochreous hair ; clypeus exposed, shining, strongly 

 but not very densely punctured, with a faint niedum ridge ; 



