no. 1818. BEES IN THE NATIONAL MUSEUM. 2—COCKERELL. 255 



specimen differs a little, in that the blue is deeply excavated at the 

 sides of the first abdominal segment, and the abdominal bands are 

 more widely interrupted than in the type, but this appears to be only 

 a matter of individual variation. 



OSMIA SUBFASCIATA Cresson. 



This small blue species runs in both sexes in Robertson's tables to 

 Diceratosmia, except for the absence of the frontal tubercles. The 

 female has tridentate mandibles, and the ventral scopa white, varying 

 to slightly yellowish. The following localities are represented in the 

 material before me: 



OKLAHOMA. 



Hugo, at flowers of Monarda citriodora, females, June 20 (F. C. 

 Bishopp). 



Ardmore. Females collected by Bishop]), April 11 and 21, at 

 Rubus; males by Bishopp, March 3 to April 21, at Rubus and wild 

 plum. 



TEXAS. 



Dallas. Fifty-seven males, collected by Bishopp and Cushman, 

 March 7 to April 26, common at Rubus and wild plum, but also at 

 Cercis canadensis and Amorpha fruticosa. Twenty-one females, 

 mostly collected bj^ Bishopp, March 20 to June 26, at blackberry, 

 Monarda citriodora and Gaillardia pulchella. Two are labeled as 

 bred from heads of Aphanostephus skirrobasis, but Messrs. Pierce and 

 Bishopp, in response to an inquiry, state that they think the bees 

 were from the flowers, and whoever labeled them, accidentally 

 omitted to erase the word "bred." Two collected by E. S. Tucker, 

 March 13, 1908, are labeled "in nest mud wasp." 



Ladonia. Females collected by Bishopp at Achillea, May 17, and 

 at Monarda, June 1. 



Pittsburg. One female, May 9 (Bishopp). 



Kerrville. Twenty-one females, one collected by P. Durham, the 

 rest by F. C. Pratt, April 12 and 13, at Marrubium vulgare. 



Waco. Nine males, six at Rubus, three at yellow Oxalis, March 22 

 (R. A. Cushman). 



Clarksville. March 30, 1908 (E. S. Tucker). Three males; "old 

 stalks horseweed." 



Victoria. One male, March 6 (J. C. Crawford) ; one female, on 

 Quercus, March 26 (J. D. Mitchell). 



Calvert. One male, April 5 (C. R. Jones). 



Handley. One male, April 27 (J. C. Crawford). 



Paris. Three males, April 10 (F. C. Bishopp; female, April 17 

 (Bishopp). 



Falfurrias. Four males at Helianthus, May 18 (A. C. Morgan). 



