26 WORKS ON NORTH AMERICAN ENTOMOLOGY. 



Lovell, J. H. — The Bumblebees of Southern Maine. <Ent. News, 

 1907, pp. 195-200. 



The Colletidse of Southern Maine. <Can. Ent., 1907, pp. 



363-365. 



and Cockerell, T. D. A. — The Bees of Maine. Sphecodidse. 



< Psyche, 1907, pp. 101-110. 

 List of American species. 

 The Megachilidse of Southern Maine. < Psyche, 1907, pp. 



15-21. 



The Halictidse of Southern Maine. < Psyche, 1908, pp. 32-40. 



The Nomadine and Epeoline bees of Southern Maine. 



< Psyche, 1905, pp. 39^12. 



Eobertson, C. — Synopsis of Anthophila. <Can. Ent., 1904, pp. 



37-44. 



This and the following papers by Mr. Robertson treat of the Illinois 

 bees. 



Synopsis of Sphecodinse. <Ent. News, 1903, pp. 103-107. 



Synopsis of Euceridse, Emphorida?, and Anthophoridse. 



< Trans. Amer. Ent. Soc, xxxi, pp. 365-372, 1905. 



Synopsis of Epeolinse. <Can. Ent., 1903, pp. 284-288. 



Synopsis of Prosopis and Colletes, with supplementary notes 



and descriptions. <Can. Ent., 1904, pp. 273-278. 



Synopsis of Nomadinae. <Can. Ent., 1903, pp. 172-179. 



Synopsis of Halictinge. <Can. Ent,, 1902, pp. 243-250. 



Synopsis of the Andreninae. < Trans. Amer. Ent. Soc, xxviii, 



pp. 187-195, 1902. 



Synopsis of Megachilidae and Bombinse. < Trans. Amer. Ent. 



Soc, xxix, pp. 163-178, 1903. 



Brites, C. T.— Studies of Texan Bees. <Ent. News, 1903, pp. 79-85. 

 Tables of Texan Epeolus and Ccelioxys. 



Swenk, M. H., and Cockerell, T. D. A. — The bees of Nebraska. 

 <Ent, News, 1907, pp. 51-58, 178-187, 293-300. 



Cockerell, T. D. A. — The bees of Florissant, Colorado. <Bul. 



Amer. Mus. Nat. Hist., xxn, pp. 419^55, 1906. 

 Table of genera near Heriades. 

 The bees of the genus Nomada found in Colorado. <Bul. 94, 



Colo. Agr. Exp. Sta., pp. 69-85, 1904. 



Titus, E. S. G.— Colorado Bombidse. <Can. Ent., 1902, pp. 37-44. 



