Records of Bees. 333 



segments, except for the bands, are shining black, with short 

 black hair.. The last ventral segment has a median sulcus 

 and a little groove or channel on each side, the latter being 

 curved and ending abruptly posteriorly. The yellow of the 

 clypeus approaches the orbital margin much more closely 

 tlian in T. atriventris, but not so closely as in T. edwardsii 

 vwjahunda. The second s.m. is broad, and receives the first 

 r. n. no great distance beyond the middle. The third t.-c, is 

 bent almost to a right angle. 



IJab. Boulder, Colorado, May 2, 1908 [Glenn M. Hite). 



Both sexes were taken at flowers of Ribes or Ghrysohotrya 

 odorata (Weiidl.) ; the Ribes longiflorum of Rydberg's ' Flora 

 of Colorado.' 



NOMIA. 



A critical examination of various specimens of Nomta, 

 supposed to be N.foxii, D. T. (punctata, Fox), shows that 

 several species have been confused. Fox, in his original 

 description, evidently confuses two or more species, and I 

 have found it difficult to determine which ought to be called 

 the true foxii. He cites (Entom. News, 1893, p. 135)-; 

 specimens from Denver, Colorado [Beales], Vega S. Jose^, 

 New Mexico (Toionsend), and Big Stone City, S. DakoHir 

 [Aldrt'ch). He does not state which is the type locality, buid 

 1 consider myself at liberty to select the New Mexico specieAi 

 as hue foxii, a course which may be justified by the fact 

 that it has been frequently referred to in my writings as such, 

 whereas the other forms have not, I think, been alluded to 

 since Fox's paper appeared. Another reason is that Fox 

 classes as a variety the very strongly punctured, form, which 

 must, I suppose, be the northern species here separated; on 

 the other hand, however, he says the tarsi of the female are 

 typically testaceous, which does not accord with what I here 

 call foxii. 'Ihe last character is very likely to be variable 

 and is not nearly so important as the difference in sculpture. 

 The species of the foxii group may be separated thus : — 



Males. 



Abdominal (tegiimentary) bauds somewhat 

 broader, suffused with emerald-green ; second 

 abdominal segment with a strong basal trans- 

 verse groove ; punctures of fourth segment 

 minute and close. (El Rito, N. M., Aug. 5, 

 Townsend ; Santa F6, N. M., July, Ckll. ; 

 common in New Mexico.) N.foxii, D. T, 



