HYMENOPTERA. 25 
Bruner, L.—Some notes on the bee genus Andrena. <Trans. Amer. 
Ent. Soe., xx1x, pp. 239-258, 1903. 
Table of species. 
CockrretL, T. D. A.—Didasia Patton; a genus of bees. < Amer. 
Nat., xxx1x, 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 Anthophorinz and Anthidiine. 
——=-The North American bees of the family Anthophoride. 
<Trans. Amer. Ent. Soc., xxxu, pp. 63-116, 1906. 
-—_—— Tables for the separation of some bees of the genera Cochoxys 
and Colletes. < Psyche, 1905, pp. 85-90. 
North American bees of the genus Nomada. <Proc. Acad. 
Nat. Sci. Phila., 1903, pp. 580-614. 
Crawrorp, 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. 184-1385. 
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. 
Smitru, H. S.—Contributions toward a monograph of the Ceratinidze 
$) bao) 
of North and Middle America. <Trans. Amer. Ent. Soc., xxx111, 
pp- 115-124, pl. 1, 1907. 
Swenk. M. H.—Specific characters in the bee-genus Colletes. < Univ. 
9 ta) 
Nebr. Studies. Contrib. Dept. Ent., pp. 43-102, pls. 3, 1908. 
Synopsis of part of genus. 
Virreckx. H. L.—Bombomelecta. <Trans Amer. Ent. Soc., xxx. 
b) 
pp. 179-182, 1903. 
——— Andrene of the Canadian, Alleghanian, and Carolinian plant 
zones, occurring or likely to occur in Connecticut. <Ent. News, 
1907, pp. 280-288. 
