56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



pronotal impressions striate; mesoscutum densely, finely punctate; 

 mesopleurum, sternum and metalpleurum finely punctate, the pleura 

 more or less striately so; basal areas of propodeum without coarse 

 sculpture, middle areas longitudinally, apical areas transversely ru- 

 gose; areolet rather large, the lumen several times broader than the 

 thiclaiess of the surrounding veins. 



Ferruginous ; occiput and middle of vertex and f rons more or less 

 stained with black; head otherwise yellow; antennae black, scape 

 pale below, a short white annulus centering on suture between 

 flagellar joints 7 and 8; mesoscutum darker than rest of thorax; a 

 band across middle of pronotum, notauli, and sutures on dorsum of 

 thorax blackish ; anterior and humeral margins of pronotum, scutellar 

 carinae, tegulae, subalar tubercles, sternauli, sutures on sides of 

 thorax, and apophyses yellowish; wings hyaline, venation brown, 

 stigma pale; legs concolorous, hind tarsus with joints 2-4 yellow, 5 

 black; abdomen immaculate. 



Male. — Differs practically only sexually from female. A little more 

 contrastingly colored, and with antennal annulus occupying flagellar 

 joints 9-11. 



The type is from Illinois, the type series of arvalis from Texas. 

 The other specimens in the National collection are as follows: On- 

 tario — Toronto, three females, two males. New York — Long Island, 

 one female. Illinois — Chicago, one female. Wisconsin — Milwaukee 

 County, two males. Maryland — Glen Echo, R. M. Fonts, one male. 

 Virginia— Near Stubblefield Falls, October 23, 1921, J. R. Malloch, 

 one female ; October 30, 1921, W. L. McAtee, one female. Charlottes- 

 ville, July 10, 1922, A. M. Vance, one female. Arkansas — one female 

 from collection of C. F, Baker. Texas — Belfrage collection, twelve 

 females, four males ; Dallas, September 26, 1905, A. J. Leister, seven 

 females, four males, including the homotype; Rosser, ex nest of 

 Polistes (Hunter No. 1123), September 25, 1905, C. R. Jones, five 

 females, three males. Kansas — parasite of Polistes^ 1872, C. V. Riley, 

 three females, two males; Riley County, Marlatt, September, two 

 females; Manhattan, August 23, 1920, R. C. Smith, one female (said 

 to have been reared as a parasite of a noctuid larva on alfalfa). Cali- 

 fornia — Huntington Beach, September 25, 1904, E. S. G. Titus, one 

 male; Humboldt Count}^, June 12, H. S. Barber, one female. 



POLISTIPHAGA ZONATA, new species 

 Fig. 3«i 



Very distinct from fulva in its black and yellow color as well as 

 in certain features of structure. 



Fenuile. — Length 7 mm. 



Head finely coriaceous opaque, frons medially rugose, face very 

 finely punctate, malar space ver}'^ nearly as long as basal width of 



