Studies of North American Bees 15 



Size larger, 11. 5 mm.; northwestern forms. 



Scape red; tegulae reddish; mesopleural mark smaller and suffused 

 with red; propodeal spots small, reddish; ground color of tergum 

 partly red, the band on tergite i reduced to small obscure, yellow 

 lateral spots; thorax above with reddish pubescence (var. c. spoka- 

 iiciisis, from Spokane, Washington, May 30). 

 Scape in front yellow ; tegulae yellow ; mesopleural mark larger and 

 3'ellow; propodeal spots larger, yellow; ground color of tergum 

 black, the band on tergite i better developed; flagellum clear red 

 (var. b, from Corvallis, Oregon, June 3). 



Nomada (Heminomada) luteoloides bishoppi (Cockerell). 



Two Pennsylvania females, from Fern Rock, May 17, 1903, 

 and Ogontz, May 28 (H. L. Viereck), have antennal joint 3 = 5 

 and three-fourths or more as long as 4, and the enclosure sub- 

 uniformly roughened. By these characters they are certainly N. 

 luteoloides, but the yellow propodeal marks encroach on the en- 

 closure, as described for A^. luteola. It thus agrees with the 

 characters of N. luteola bishoppi Ckll. 5, but I would emphasize 

 the antennal structure over the extent of the yellow propodeal 

 marks, and consider bishoppi a subspecies of luteoloides. 



Nomada (Holonomada) superba Cresson. 



Additional Nebraska records are: Wyoming, June 5, 1913, on 

 Melilotus officinalis (M. H. Swenk), 4 5; Omaha, June 9, 1913, 

 on Medicago sativa (L. T. Williams), i 5> i d^; Wymore, June 



17, 1913 (R. W. Dawson), i $; Neligh, June 19, 1913 (L. T.. 

 Williams), i $; Norfolk, June 25, 1913 (L. T. Williams), i $. 

 All of these eight females are typical, agreeing closely with 

 Robertson's diagnosis of that sex, and not approaching my 

 superba var. or nebrascensis. 



Nomada (Holonomada) vincta Say. 



Additional records are: Omaha, Nebraska, August 13 to Sep- 

 tember 2, 1913, mostly on Helianthus (L. T, Williams), 9 $, 4 J*; 

 Mitchell, Nebraska, July 29 and August 8, 1913, on Helianthus 

 annuiis (L. M. Gates), 2 5; Fargo, North Dakota, August 10 and 



18, 1912, and September 8, 191 3, on Grindelia squarrosa, Heli- 

 anthus maximiliani and H. tuberosus (O. A. Stevens Nos. 3531, 

 3759, 6697-6699), 3 ?, 2 J'; Mott, North Dakota, August 20, 



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