December. 1901] 



PSYCHE. 



283 



It is doubtless the same insect whicli 

 has been reported from New Mexico as 

 A. smithii, Cresson, and I am not posi- 

 tive that it should be separated from 

 that species. 



Mcgachile willughbieUa {YJ\x\yj"). 2 $. 

 This European species has not hitherto 

 been reported from America, but the 

 males before me agree exactly with 

 examples from Mr. Friese, collected at 

 Lugano, June 25, 1884. The insect 

 resembles a good deal the male of M. 

 lati?nanns, but is smaller, with the four 

 hind legs practically normal, and the 

 anterior femora have a short oblique 

 keel on the outside near the apex. I 

 have other New Mexico specimens, one 

 from Las Vegas, June 6 (N. E. Coch- 

 ran); six from the Rio Ruidoso, col- 

 lected by C. H. T. Townsend. Of these 

 last, three were collected July 29, at 

 6700 ft., on flowers of Vkia Ti&. pulchclla ; 

 one Aug. 3, 7500 ft., on Verbena mue- 

 doitgali \ one, July 22, 6900 ft., and one 

 July 25, 6500 ft., the last two on Mon- 

 arda stricta. The only objection to 

 regarding these males as veritable unl- 

 liegkbiella, rests in the fact that I have 

 nothing American agreeing with the 

 female of that species. The species 

 which comes nearest to it, and looks like 

 the female of the just mentioned males, 

 is M. monardarum, Ckll. This differs 

 from a 9 wniughbiclla sent by Mr. 

 Friese, in the black hair of the meso- 

 thorax, the pure white hair of the pleura 

 and the ventral scopa not being black 

 on the last two segments. 



Osmia faccta,Cresson. 2 ^. In fresh 



examples there is a good deal of black 

 hair on the dorsum of the apical half of 

 the abdomen, not mentioned by Cresson. 



Osmia iinirbnna, Cresson. i ^ . 

 Length 7^ millim. The specimen differs 

 from typical inurbeitia in having the sixth 

 abdominal segment only slightly emargi- 

 nate ; I was at first inclined to treat it 

 as a distinct species, but a series of 

 iuurbana before me is so variable, that I 

 hesitate to propose any segregation. 

 The insect is also very like O. albiven- 

 fn's, but differs specifically in the 

 broader face, perfectly black antennae, 

 si.rth abdominal segment not margined 

 with testaceous, apical segment strongly 

 bidentate, and the hind tarsi much 

 broader, the first joint being twice as 

 broad, and edged within by a short 

 fringe of bright orange-fulvous hair. It 

 is also very near to the European O. 

 vcrsieolor. O. iiii/rbana is new to New 

 Mexico. 



Prosopis varif rolls, Cresson. i ^ . 



Prosopis basa/is. Smith, i 9 . 



Co/betes iiigrifro/is, Titus, i 9 . New 

 to New Mexico. Differs from a cotype 

 received from Mr. Titus in having no 

 black hair on scutellum. but is clearly 

 the same species. 

 ^ Andreiia bir/iLv/bi, n. sp. 



9. Length about 10 mm., black ; head and 

 thorax clothed with long, erect, gravish-white 

 hair; black on vertex and hind part of 

 cheeks; long, white and curled on each .side 

 of metathorax, where it forms a scopa glled 

 with jellowish-white pollen. Head ordinary; 

 facial quadrangle broader than long ; area 

 behind ocelli punctured ; front below ocelli 

 coarsely strigose ; clypeus microscopically 



