454 PROCEEDINGS OP THE NATIONAL MUSEUM. vol. 55. 



Propodeum with a complete, deep, narrow groove; propodeum 

 rugose. 



Petiole about the same length as hind coxae. 



Legs a translucent to opaque reddish-brown. 



Antennae: Flagellum with pedicel equal to head and thorax com- 

 bined ; scape as seen in lateral profile broadest distally ; three times as 

 long as broad exclusive of base; at broadest place about twice as 

 broad as first flagellar joint ; near distal extremity there is a distinct 

 shoulder. 



Type-locality. — Champaign, Illinois. 



Type.—CRt. No. 21758, U.S.N.M. 



Described from many females and males reared from stems of 

 species of Elymus collected by the late Prof. F. M. Webster in Illinois ; 

 in Kansas and Nebraska by Mr. G. I. Reeves ; in Utah by Mr. T. H. 

 Parks; and in New Mexico hj Mr. C. N. Ainslie. 



//. rufipes makes or forms inconspicuous galls in the internode just 

 below the head. There is often no external enlargement of the stem 

 where the galls occur. It has been reared only from species of Ely- 

 mus. Males normally occur. 



HARMOLITA FESTUCAE. new species. 



Plate 41, fig. 10 ; plate 43, fig. 14 ; plate 45, fig. 10 ; plate 46, fig. 12. 



Females. — Length 3.5 mm. Praescutum densely rugulose. Pro- 

 notal spots small, occupying one-half or less of the anterior dorsal 

 margin of prothorax. 



Propodeum with a continuous, moderately broad, deep, median, lon- 

 gitudinal groove, usually margined throughout. Occasionally there 

 is a median longitudinal ruga anteriorly, extending about one-half the 

 length of the groove; rugose within and laterad of groove. 



Abdomen long and very slender, plainly longer than head and 

 thorax combined, very narrowly lanceolate; segment 2 between one- 

 sixth and one-seventh the length of the abdomen. Segment 3 is short- 

 est, 5 longest ; 6 approaches 5 in length and is usually longer than 4 

 or 7 ; segment 7 is never shorter than 4. 



Legs: Basal one-half of upper and lower and basal one-third of 

 anterior and posterior faces of front, basal one-half of middle and 

 basal two-thirds of hind femora, black to fuscous; middle and hind 

 tibiae fuscous, front tibiae and knees testaceous. 



Antennae: First funicle plus ring-joint equals pedicel in length; 

 scape exclusive of base equals pedicel plus first 2 joints of funicle; 

 fifth funicle joint quadrate and first and second club joints broad as 

 long; club slightly broader than 3 preceding joints. Scape black. 



Species medium to large in size. 



Male (pi. 46, fig. 12). — Length 2.25 mm. Praescutum same as in 

 female. Pronotal spots visible from above, occupying nearly one- 

 third of anterior dorsal margin of prothorax. 



