44 PROCEEDINGS OF THE NATIOlSTALi MUSEUM vol.74 



Generally distributed throughout the eastern half of the United 

 States and extending in the South entirely across the continent and 

 into Mexico. The type is from Virginia and that of orhitalis from 

 Colorado. The specimens in the National collection are as follows : 

 Massachusetts — Milton, July 19, 1897, S. Henshaw, one male. 

 Connecticut — one female. New York — Ithaca, F. H. Chittenden, one 

 female, one male. Maryland — ex Bahrmna coccidivora^ two fe- 

 males. District of Columbia — three females, one male. Virginia — 

 Falls Church, July 31, 1913, W. Middleton, one female ; Winchester, 

 ex Euzophera semifuneralis^ Quaintance No. 15403, April 23, 1919, 

 E. B. Blakeslee, one female. Ohio — Spring Valley, September 

 13, 1896, one male. Illinois — Algonquin, two females, one male. 

 Michigan — Agricultural College, two females. Wisconsin — Cran- 

 moor, July 7, 1909, C. W. Hooker, one female. Mississippi — 

 Biloxi, ex pupa LaetUia coccidivora, S. M. Tracy, one male. 

 Louisiana — Baton Rouge, May 27, 1898, one female. Texas — Dallas, 

 April 26, 1907, W. W. Yothers, one female ; April 6, 1909, F. C. Pratt, 

 one female ; May 11, 1908, A. K. Pettit, one female ; Victoria, June 2, 

 1906, C. E. Jones, one female ; Brownsville, May, 1921, J. C. Brid- 

 well, one male; Devils River, ex Ozaniia\ clarefacto^ June 1925, A. P. 

 Dodd, one male; Uvalde, ex Ozamia clarefacto, May, 1925, A. P. 

 Dodd, two females; no locality, Belfrage, one female, one male. 

 Kansas — Riley County, October, Marlatt, one female; Manhattan, 

 one female. Arizona — one male. New Mexico — Roswell, April 15, 

 Cockerell, one female; Las Cruces, May 5, one female; Mesilla, 

 October 27-30, Cockerell, two miles. California — Saticoy, February 

 3, 1927, S. E. Flanders, one female. United States — no locality, two 

 females, eight males. Mexico — one female from C. F. Baker 

 collection. 



MESOSTENUS LEUCOPUS Ashmead 



Figs, le, 2g-h 



Mesostenus leiicopus Ashmead, Proc. U. S. Nat. Mus., vol. 12, 1890, p. 406, male. 

 Type.— Cat. No. 2018, U.S.N.M. 



Discussion based on type, two other males and five females, all in 

 the United States National Museum. 



The female of this species has not been described previously. 



Female. — Length, 10-12 mm. 



Temples very narrow but strongly convex, sparsely punctate, 

 polished; vertex and frons above medially rugulose; anterior orbits 

 finely coriaceous ; face medially shining and densely punctate ; clypeus 

 more sparsely punctate, strongly convex, eyes parallel; malar space 

 barely two-thirds basal width of mandible; antennae nearly as long 

 as body, slender, slightly thicker toward apex, basal three joints of 



