438 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.55. 



Prouotal spots large, occupying two-thirds anterior dorsal margin of pro- 

 thorax ; prothorax not brownish ; fifth funicle and first two club joints 

 quadrate elymoxena,, new species. 



25. Vertical diameter of abdomen at sixth segment only slightly less than its 



greatest vertical diameter elymivora, new species. 



Vei'tical diameter of abdomen at sixth segment about one-half its greatest 

 vertical diameter 26. 



26. Front femora and tibiae reddish-brown elymophtJiora, new species. 



Front femora and tibiae not reddish-brown 2'J» 



27. Middle and hind tibiae fuscous ; propodeum convex laterad of groove ; 



abdomen slender occidentalis, new species. 



Middle tibiae fuscous ; hind tibiae brownish ; not especially convex laterad 



of groove ; abdomen rather stout gillettei, new species. 



Middle and hind tibiae black ; propodeum not convex laterad of groove ; 



usually granulose within and laterad of groove elymicola, new species. 



TABLE 2 — -MAXES 



1. Praescutum reticulately lineolate 2. 



Praescutum rugulose 9. 



2. Pronotal spots minute, not visible from above 3. 



Pronotal spots small but visible from above 4. 



Pronotal spots large, occupying one-third to one-half anterior dorsal 



margin of prothorax 6. 



3. Propodeum without groove ; thorax very smooth, almost polished ; scape in 



lateral profile distinctly longer than broad and broadest near the base. 



grandis form minuta Riley. 



Propodeum v/ith complete groove , thorax not particularly smooth and not 



polished ; scape in lateral profile almost as broad as long poae, new species. 



4. Praescutum with numerous broad and very shallow impressions ; pronotal 



spots scarcely visible from above ; scape in lateral profile broadest at center ; 



third flagellar joint about twice as long as broad captiva Howard. 



Praescutum without impressions, pronotal spots clearly visible from above ; 

 scape in lateral profile broadest near base; third flagellar joint about 4 

 times as long as broad 5. 



5. Three to four annulations at the distal extremity of the penultimate seg- 



ment of flagellum ; petiole and hind coxae of equal length. 



agropyropliila, new species. 



One annulation at the distal extremity of the penultimate segment of the 



flagellum ; petiole shorter than hind coxae maculata Howard. 



6. Flagellum and pedicel together longer than head, thorax, and petiole com- 



bined albomaculata Ashmead. 



Flagellum and pedicel together shorter than head, thorax, and petiole 

 combined 7. 



7. Propodeal groove incomplete; spur on end of apical joint of antennae con- 



spicuous, about 4 times as long as broad tvcbstC7-i Howard, 



Propodeal groove complete 8. 



8. Spur on end of apical joint of antennae inconspicuous, about twice as long 



as broad ; tibiae black ; species robust dactylicola, new species. 



Spur on end of apical joint of antennae long and slender, about 4 times as 

 long as broad ; tibiae brownish-black ; species very slender. 



bromicola Howard. 



9. Without propodeal groove 10. 



With propodeal groove 13. 



