104 THOMAS SAY FOUNDATION 



bristle on outer front side; hind tibia without villos- 



ity. 



Wing subhyahne, no costal spine; third costal 

 segment a little shorter than the fifth ; first vein bare ; 

 third vein hairy half way to crossvein. 



Other males show the second segment of hypopy- 

 gium considerably blacker but still partly reddish. 



Female. ( Cotype ) . Very much more ashy pol- 

 linose than the male, which is comparatively black. 



Front .304 of the head (average of five, — .282, 

 .306, .306, .311, .314). Frontal stripe yellow, nar- 

 rower than one side; the usual two orbital bristles; 

 antennae almost yellow; outer vertical bristle pres- 

 ent. Thorax light gray, hardly striped at all. Scu- 

 tellum without apical bristles. Abdomen light gray 

 with a median indistinct stripe. All of the bristles 

 shorter and indistinct. The largest are those of the 

 third segment; the fourth segment bears only hairs. 

 Genital segment retracted, not visible, but the orifice 

 closed by a distinct larvipositor which is spatulate at 

 apex, bears two tufts of convergent hairs near the 

 base and does not protrude enough to be noticeable. 

 Middle tibia with two bristles, one small. Other fe- 

 males are not quite so pale and show a more striped 

 and tessellated abdomen. 



Length, males 6 mm ; females 5 mm. 



One male and one female, type material in Hough 

 collection, bred from Melanoplus diiferentialis. Ford 

 County, Kansas; emerged Sept. 6; one male, bred 

 from a grasshopper, St. Louis, Mo., emerged April 

 22, 1819 (Riley, No. 1027 p.) ; one male without lo- 

 cality, collection C. V. RiJey, Sept. 6, 1884, No. 2882; 

 four females, Natrona, Cal., July 18, 1885, C. V. 

 Riley; one of them labeled "pupa found in ground," 

 July 12; two females Pay son, LTtah, reared from 

 grasshoppers by C. N. Ainshe (Webster, No. 6673) ; 

 two females Charleston, Mo., Sept. 28, 1914, reared 

 from undetermined grassho])per by G. W. Bar- 

 ber (Webster No. 7973) ; two females Marysville, 

 Neb., Oct. 7, 1914, reared from Melanoplus clif- 



