Natural History of District of Columbia — McAtee 39 



Contributions toward a monograph of the Mutillidae and their 

 allies of America north of Mexico. 



I. A Revision of Ephuta Say. 



Trans. Am. Ent. Soc. 42, No. 2, June, 1916, pp. 187-198. 



II. A Revision of Timulla Ashmead, etc., pp. 199-214. 



III. The Mutillidae of the Eastern United States, pp. 309-336. 

 20 species, 4 new. 



Cockerell, T. D. A. 



Notes on some bees from Virginia. 



Proc. Ent. Soc. Wash. XVII, No. 1, Mar., 1915, pp. 3-5. 



3 species visiting sunflower and lima bean flowers at Falls 

 Church, Va. 



Crawford, J. C. 

 A new family of parasitic hymenoptera. 

 Proc. Ent. Soc. Wash. 11, No. 2, Aug., 1909, pp. 63-64, PI. 5. 

 Vanhorniidae, based on Vanhornia eucnemidarum, n. gen. et. sp. 



Descriptions of new hymenoptera, 1. 



Proc. U. S. Nat. Mus. 39, pp. 617-623, Feb. 25, 1911. 



Winnemana argeh, n. gen. et. sp. Plummers Id., Md. 



Cushman, R. A. 



A revision of Hymenopterous insects of the tribe Cremastini of 

 America north of Mexico. 



Proc. U. S. Nat. Mus. 53, pp. 503-551, Aug. 22, 1917. 



9' species from this vicinity, 7 new. 



Gahan, A. B. 



Aphidiinae of North America. 



Bui. 152, Maryland Agr. Exp. Sta., Apr., 1911, pp. 147-200, figs. 1-11. 



13 species. 



Descriptions of 2 new genera and 6 new species of parasitic 

 hymenoptera. 



Proc. Ent. Soc. Wash. 14, No. 1, Jan.-Mar., 1912, pp. 2-8. 



4 new species, representing also 2 new genera. 



A revision of the North American Ichneumon-flies of the sub- 

 family Opiinae. 



Proc. .U S. Nat. Mus., Vol. 49, pp. 63-95, Pis. 34-35, Aug. 23, 1915. 



5 species from District of Columbia region. 



Girault, A. A. 



A systematic monograph of the Chalcidoid Hymenoptera of the 

 sub-family Signiphorinae. 



Proc. U. S. Nat. Mus. 45, pp. 189-233, May 22, 1913. 



4 species from District of Columbia. 



