NO. 22S1. A REVISION OF CHALCID-FLIES— PHILLIPS AND EMERY. 451 



joint; there are from 3 to 5 annulations at the articulation of the 

 joints of the flagelhim. Scape, exclusive of base, scarcely three 

 times as long as broad. 



Type-localiti/. — Charlottesville, Virginia. 



Type.— Cat No. 21757, U.S.N.M. 



Described from many females and males reared in cages under 

 artificial conditions and from specimens reared from stems of species 

 of Agropyron collected in eastern Kansas, Indiana, Ohio, Michigan, 

 New York, and Pennsylvania. 



This species inhabits the center of the stem and breeds only in 

 species of Agropyron. Males normally occur. 



HARMOLITA TRITICI Fitch. 



Plate 41, fig. 4 ; plate 42, fig. 1 ; plate 44, fig. 1 ; plate 45, fig. 12 ; plate 47, fig. 4. 



Eurytoma tritici Fitch, Journ. N. Y. State Agr. Soc, vol. 10, p. 115, 1859. 

 Isosoma nigrum Cook, Rural New Yorker, p. 314, June, 1885. 

 Isosovia tritici (Fitch) Howard, U. S. Dept. Agr., Div. Bnt. Bull. tech. ser. 

 No. 2, p. 17, 1896. 



Female. — Praescutum rugulose. Pronotal spots minute to small, 

 visible from above, occupjdng scarcely one-fourth anterior dorsal 

 margin of prothorax. 



Propodeum without a continuous, median, longitudinal groove, 

 although there is a trace of a groove in the anterior one-third the 

 margined carinae of which curve around the spiracles. There is also 

 a well-defined central carina the full length of this groove. Pro- 

 dodeum very rugose, the rugae extending in a more or less longi- 

 tudinal direction ; fimbria not prominent. 



Abdomen longer than head and thorax combined ; segment 2 about 

 one-fifth the length of the abdomen (dorsally) exclusive of first seg- 

 ment ; 3 shortest, 5 longest ; 4 and 6 subequal and each longer than 7. 



Legs: Knees and front tibiae are testaceous; basal half of front 

 femora, middle and hind femora and tibiae black, although the 

 middle and hind tibiae are occasionally somewhat fuscous. 



Antennae: First funicle plus ring-joint the same length or only 

 slightly longer than pedicel; none of funicle or club joints quadrate; 

 club joints same width as funicle; scape black. 



Species large in size. 



Male (pi. 47, fig. 4). — Praescutum same as in female. Pronotal 

 spots not visible from above when head is in normal position. 



Propodeum with or without a groove ; when present, the groove is 

 broad and shallow ; propodeum rugose. 



Petiole two-tliirds length of second abdominal segment and three- 

 fourths to about equal to the hind coxae ; rugose to granulose. 



Legs black except at knees and front tibia, which are brown to 

 dusky. 



