OF WASHINGTON, VOLUME XVI, 11)11 115 



femora suffused with fuscous. Venation smoky brown. Marginal vein 

 subequal to the Ions stiginal, the post-marginal vein somewhat longer. 

 Cephalic tibial spur forming a strigil. Antenna; 13-jointcd with 'J ring- 

 joints the second of which is rather large, twice the size of the first, which is 

 larger than the usual ring-joint; the funiclar joints widening dislad, all 

 wider than long and shorter than the pedicel; joints 1-3 of the funicle sub- 

 equal, each twice the size of the second ring-joint; funiclar joints 1 and "> 

 subequal, somewhat larger, 6 still somewhat larger; club ovate, not wider 

 than the last funiclar joint, the 3 joints subequal, each somewhat longer 

 than joint 6 of the funicle. Scape long and slender. Body polygonally 

 sculptured. 



From four specimens, f-inch objective, 1-inch optic, Bausch and 

 Lomb. 



Male: Length, 1.75 mm. The same but the abdomen is rounded and 

 depressed, the antennal club more thickened and stouter, wider than the 

 distal funiclar joint; the flagellum is yellowish white, the pedicel dark, the 

 ring-joints more or less dusky. 



From one specimen, the same magnification. 



Described from one male and four females mounted singly in 

 balsam. 



Received for identification from R, L. Webster of the Iowa 

 Agricultural Experiment Station and labeled as follow.-: 'Exp. 

 101, 12 and 13 June, 1912. From Hampton, la. R, L. Webster," 

 2 slides 1 cf, 1 9; "Exp. 102. June 12, 1912. From Hampton, 

 Iowa, R. L. Webster," 1 9; "Exp. 147, 27 June, 1912. Ames, 

 Iowa. R. L. W.," 1 9; and "Exp. 164, 26 June, 1912. Ames, 

 la. R, L. W." 



Habitat: North America Ames and Hampton, Iowa ( I". S. A.J. 



Types: Cat, No. 15655, United States National Museum, Wash- 

 ington, D. C., the five slides as above. 



This species differs from vulgaris Walker in having the legs 

 light yellow instead of ferruginous with darker femora, and in 

 having the pedicel shorter. 



GENUS ELASMUS WESTWOOD. 



Elasmus proserpinensis new species. 



Female: Length, 2.00mm. lAke flavipostscutellum (the postscutellum 

 whitish except along extreme base) but the abdomen is wholly shining black, 

 the legs distinctly more colored, only the articulations and tibia- pallid yel- 

 low; and the teguhr and scape are pale yellow. \Yrtex rather densely 

 umbilicately punctate; femora and coxa- sculptured. Antenna- 10-jointed, 

 with the first ring-joint very short, hidden; differing from those of flavi- 

 postscutellum in that tin- proximal funiclar joint is distinctly longer than 

 the pedicel and the joints are all somewhat longer; the proximal club joint 

 forms nearly half of that region. The mandibles bear seven teeth, three 



