82 Myron Harmon Swenk 



longer than the fourth (these equal in placitensis) , in lacking the 

 reddish on the apical margins of tergites 1-4 and basal margins 

 of I and 2, especially 2, in lacking the yellow spots on tubercles 

 and lower corners of face, in having much less black on the 

 legs, etc. 



Nomada (Holonomada) vincta Say. 



1837. Nomada vincta Say, Boston Journal Nat. Hist., I, p. 401, ? 



(not c?) ; Leconte edition, II, pp. 778^79. 

 1863. Nomada vincta Cresson, Proc. Ent. Soc. Phil., II, pp. 284-86, c? 



(not 5, which is affabilis). 

 1895. Nomada vincta Robertson, Trans. Am. Ent. Soc, XXII, pp. 



123-24, ? c?. 

 1903. Holonomada vincta Robertson, Can. Ent., XXXV, p. 177, ? c?- 

 1903. Nomada vincta Cockerell, Proc. Acad. Nat. Sci. Phil., pp. 580-82, 



1905. Nomada (Holonomada) vincta Cockerell, Bull. 94, Colorado 

 Exp. Sta., p. 72 and p. 78, 5 c?- 



A common autumnal species in Nebraska. A series of eleven 

 females and four males collected during August and up to 

 September 18 at Lincoln and West Point, Nebraska, is before 

 the writer. They were captured at flowers of Grindelia squar- 

 rosa, Helianthus annims and Solidago rigida. A female and two 

 males from Manhattan, Kansas, collected at flowers of Helianthus 

 tuberosiis, August 24 and 25, 1908, by O. A. Stevens (Nos. 927, 

 934, 935), are also before the writer, as well as a series of seven 

 females (Nos. 2551, 2640, 2646, 2793, 2794, 2795, 2967) and 

 six males (Nos. 2138, 2153, 2139, 2791, 2792, 2966) from Fargo, 

 North Dakota, collected by Mr. Stevens, August 4 to 25, at 

 flowers of Grindelia squarrosa, Helianthus maximiliani, culti- 

 vated Helianthus, and Solidago serotina. Mr. Stevens sent the 

 writer for examination a female from Lake Park, Minnesota, 

 captured August 22, 191 1, on Rudbeckia laciniata by C. H. 

 Waldron, also. 



Nomada (Holonomada) zebrata Cresson. 



1878. Nomada zebrata Cresson, Trans. Am. Ent. Soc, VII, p. 73, ? d". 

 1903. Nomada zebrata Cockerell, Proc. Acad. Nat. Sci. Phil., pp. 580- 

 83, ? <S. 



82 



