Robertson — North American Bees. 343 



collection would not show so large a proportion of red-legged 

 specimens but for the fact that I have given away and thrown 

 away black-legged specimens, selecting the others and even 

 looking out for them in the field. 



Epeolus concavus Cress. 



Epeolus lunatus Say, Long's 2nd Exped. II, 354, (^ (non ?), 1824, 

 Lee. Edit. I, 240. 



Epeolus concavus Cresson, Trans. Am. Ent. Soc. VII, 85, 9, 1878. 



Carlinville, Illinois; 26 $, 9 ^j specimens; N. Mex., Cal., 

 Ga., La. (Cress.). 



The characters indicated by Say for the ^ of his B. lunatus — 

 ■" Anterior half of the thorax with much of the pale yellow- 

 ish color; bands of the tergum larger than those of the female 

 and one more in number " (i. e. five fasciate) — are exactly 

 the characters which distinguish the male of U. concavus from 

 the true male of JE. lunatus. In U. lunatus and B. remigatus 

 the 2 has the abdomen with four fasciae, and cinereous spots 

 on the fifth segment, the $ six fasciate. In E. concavus $ 

 the abdomen is four-fasciate, the fifth segment black, and the 

 ^ is five-fasciate. 



Epeolus bifasciatus Cress. 



Epeolus Ufasciatus Cresson, Proc. Ent. Soc. Phil. Ill, 38, (j^, 1864. 



? Epeolus fumipennis Say, Best. Journ. I, 403, 1837, Lee Edit. II, 779. 



In Say's description lines on the thorax are mentioned three 

 times. They are not mentioned in Cresson's description of 

 B, bifasciatus. In 19 ^2 specimens before me they are en- 

 tirely wanting, as well as the whitish lateral edges. 



Epeolus scutellaris Say. 



Epeolus scutellaris Say, Long's 2nd Exped. II, 355, $, 1824, Lee. Edit. 

 I, 240. 



Epeolus zonatus Smith, Brit. Mus. Cat. Hym. II, 257, 9d^» 1^54. 



Epeolus scM«eHan's Provancher, Addit. Faun. Ent. Can. Hym. 332, $, 1888. 



Inverness, Florida; 1 2, 2^, specimens; Pa., Ark. (Cress.), 

 Can. (Prov.), Fla. (Smith). 



Smith says the male differs in having the apex of the 

 clypeus and only the basal segment of abdomen ferruginous. 

 In the above specimens the abdomen has two basal segments 

 ferruginous, as in the female. The males have the clypeus 

 entirely black, while in the female the apex is ferruginous. 



