HYMEN OPTERA. 25 



Bruner, L. — Some notes on the bee genus Andrena. < Trans. Amer, 



Ent. Soc, xxix, pp. 239-258, 1903. 

 Table of species. 

 Cockerell, T. D. A. — Didasia Patton; a genus of bees. <Amei\ 



Nat., xxxix, pp. 741-745, 1905. 

 Synopsis of the North American bees of the genus Nomia, 



< Entomologist, 1898, pp. 31-33. 



Synopsis of the North American bees of the genus Stelis, 



< Entomologist, 1898, pp. 166-169. 



The North American bees of the genus Prosapis. < Ento- 

 mologist, 1898, pp. 185-192, 216-219, 236-239. 



On certain genera of bees. <Ann. Mag. Nat. Hist. (7), vn, 



pp. 47-50, 1901. 



Genera of Anthophorinae and Anthidiinse. 



The North American bees of the family Anthophoridse, 



< Trans. Amer. Ent. Soc, xxxii, pp. 63-116, 1906. 



Tables for the separation of some bees of the genera Coelioxys 



and Colletes. < Psyche, 1905, pp. 85-90. 



North American bees of the genus Nomada. <Proc. Acad, 



Nat. Sci. Phila., 1903, pp. 580-614. 



Crawford, J. C. — Notes on some species of the genus Halictus, 



< Journ. N. Y. Ent. Soc, 1907, pp. 183-189. 



The bee genus Dialictus. <Can. Ent., 1902, p. 318. 



Fox, W. J. — Synopsis of the North American species of Megacilissa, 



< Psyche, vi, pp. 421-422, 1893. 



Synopsis of the North American species of Nomia. <Ent, 



News, 1893, pp. 134-135. 



Synopsis of the North American species of Melecta, <Ent. 



News, 1893, pp. 143-144. 



Lithurgopsis, a new genus of bees. <Ent. News, 1902, p. 137. 



Smith, H. S. — Contributions toward a monograph of the Ceratinidae 

 of North and Middle America. < Trans. Amer. Ent. Soc, xxxin, 

 pp. 115-124, pi. 1, 1907. 



Swenk, M. H. — Specific characters in the bee-genus Colletes. <Univ. 

 Nebr. Studies. Contrib. Dept. Ent,, pp. 43-102, pis. 3, 1908. 

 Synopsis of part of genus. 



Viereck, H. L. — Bombomelecta. < Trans Amer. Ent, Soc, xxix, 

 pp. 179-182, 1903. 



Andrena? of the Canadian, Alleghanian, and Carolinian plant 



zones, occurring or likely to occur in Connecticut,. <Ent. News,, 

 1907, pp. 280-288. 



