THE MYC-E,rOPlill,WJE OF NORTH AMElRICA. 249 



e. A blackish spot on proximal part of hind coxae 



and adjacent portion of pleura; thorax and 



abdomen reddish yellow, wing band feeble ; 



length 8 mm. 12. notabilis. 



ee. Not as above in all particulars. 



f. R2+:-. nearly perpendicular to R4+5. 



g. Last abdominal segment wholly fuscous black. 



h. Wing spot distinct; length 3.5 mm. Ga. ^ f\ 



26. divaricafa. * 



hh. Wing spot subobsolete; fore metatarsus is 

 about 0.25 longer than its tibia ; length 

 5 mm. Maine. 



14. fascipcnnis var. sagax, n. var. 

 gg. Abdomen dusky. 



h. Abdomen of male including last segment v^ 



slightly dusky; fore metatarsus over 0.4 t'^ 



longer than the tibia; coalesced part ot ,\ 



media noticeably longer than the petiole. "^^ 



19. subterminalis. 

 hh. Fore metatarsus less than .25 longer than 

 the tibia ; coalesced part of media shorter 

 or not longer than the petiole; female. 



14. fascipcnnis. 

 ff. R2+:; distinctly oblique to Ri+.-. / ^ 



g. Subcostal crossvein wanting ; blackish species, ~\^ 

 wing with slight cloud ; length 6 mm. % . - 



9. melasoma.jj 

 gg. Subcostal crossvein present. 



i. Fore metatarsus longer than its tibia. 



j. Fore metatarsus about i-6 longer than 



the tibia; subcostal crossvein is near 



the middle of the subcosta. 



k. Coalesced part of media equal to or 



shorter than the petiole ; hypopy- 



gium (fig. 98) ; preapical cloud 



subobsolete. 20. diluta. 



kk. Coalesced part of media longer than 



the petiole; hypopygium (fig. 96). 



21. moerens n. sp. 



