444 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 55. 



Male (pi. 48, fig. 5). — Praescutum same as in female. Pronotal 

 spots large, bright, occupying about one-half anterior dorsal margin 

 of the prothorax. 



Propodeal groove usually incomplete, occasionally complete; 

 usuall}^ granulose within and laterad of groove. 



Legs : Black except at knees and distal one-third of front femora ; 

 knees and distal one-third of front femora testaceous. 



Antennae: Flagellum and pedicel longer than head, thorax, and 

 petiole combined. Hair on first joint of flagellum distinct^ longer 

 than last joint of antennae. Spur on distal joint of flagellum 

 scarcely twice as long as broad. Scape broadest near base and twice 

 as broad as first flagellar joint. Four or more annulations at all 

 articulations of flagellum. Scape scarcely three times as long as 

 broad, exclusive of base. 



Eedescribed from specimens reared in cages under artificial con- 

 ditions, and from specimens reared from stems of timothy collected 

 in the Dakotas, Nebraska, Kansas, and from many States east of 

 the Mississippi Eiver, including New England; and from the types 

 in the United States National Museum in Washington. 



It inhabits the center of the stem and breeds only in timothy 

 {Phleum vratense). It probably occurs wherever timothy is grov^n, 

 except possibly in the irregated districts of the West. Males nor- 

 mally occur. 



HARMOLITA CAPTIVA Howard. 



Plate 39, fig. 9 ; plate 43, fig. 5 ; plate 45, fig. 11 ; plate 47, fig. 6. 



Isosoma capHvuni Howard, U. S. Dept. Agr., Div. Ent., Bull. tech. ser. 

 No. 2, p. 13, 1896. 



Female. — Praescutum roughly reticulately lineolate and bearing 

 numerous broad, very shallow, impressions. Pronotal spots small but 

 very distinctly visible from above. 



Propodeum with very narrow, deep, continuous, median, longi- 

 tudinal groove, which contains numerous cross rugae that are quite 

 regularly spaced; rugose laterad of groove; spiracular carinae 

 prominent ; fimbria not prominent. 



Abdomen longer than thorax. Segment 2 about one-third as long 

 as abdomen exclusive of segment 1 ; greatest vertical diameter of the 

 abdomen is at the third segment. 



Legs : Femora black except at distal extremities which are testace- 

 ous; the front tibia and the extremities of the other tibia are 

 testaceous ; other parts of the tibia are fuscous. 



Antennae: First funicle plus ring-joint usually only slightly 

 longer than pedicel; none of the funicle or club joints quadrate and 

 all of the flagellar joints the same width; scape about the same length 

 as the first funicle joint and pedicel combined; scape black. 



Species medium in size. 



