Studies of North American Bees 107 



the U. S. National Museum determined as vegana by Cock- 

 erell. This would seem to destroy all claim to vegana being 

 a distinct species but the name can still be used, as originally ap- 

 plied, to designate a western geographical race. In a series of 

 three females and five males from Ute creek, Costilla county, 

 Colorado, collected July 5 and 13, 1907, by L. Bruner and H. S. 

 Smith, vegana 5 reaches a maximum suffusion of reddish, having 

 not only the clypeus but the pectus and pleura red (this occurring 

 also in some Sioux county, Nebraska, specimens), and in one 

 female the mesoscutum red with the black anterior and posterior 

 margins connected with a narrow stripe; the five males, even in 

 this series, are not distinguishable with certainty from ordinary 

 modesta, but, as Cockerell has pointed out, average rather 

 smaller. In Nebraska specimens referable to vegana have been 

 collected in Warbonnet and Monroe canyons and at Glen, in 

 Sioux county, at Haigler in Dundy county, at Halsey in Thomas 

 county, and at Cams in Keyapaha county, June 23 to August 22, 

 commonly at flowers of H elianthus petiolaris, H elianthus annuiis, 

 Ratibida columnaris, Kuhnistera Candida, Kuhnistera purpurea, 

 Amorpha canescens, Symphoricarpos occidentalis, Verbena slricta 

 and Mentha canadensis. Two females and a male from Valley 

 City, North Dakota, August 13, 19 12, on Chry sepsis (O. A. 

 Stevens, Nos. 3631, 3632, 3633) are also before the writer; these 

 were taken along with a pair of N . modesta. 



Nomada (Micronomada) texana Cresson. 



1872. Nomada texana Cresson, Trans. Am. Ent. .Soc, IV, p. 271, $ <^. 

 1903. Cephen texanus Robertson, Can. Ent., XXXV, p. 173, $ 3- 

 191 1. Nomada texana Cockerel], Proc. U. S. Nat. Mus., XXXIX, pp. 

 652-53. 



This species is found in eastern Nebraska but is uncommon. 

 M. A. Carriker collected three specimens at Nebraska City, Sep- 

 tember 12 to 14, 1901, on Solidago rigida, which are the same as 

 specimens of texana in the U. S. National Museum. 



Nomada (Micronomada) arenicola n. sp. 



?. Length 10 mm. Agreeing with A'', texana Cresson, but larger, dis- 

 tinctly more coarsely punctured, the venter entirely shining black with no 



107 



