12 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.69 



In addition to the type, which is from Colorado, I have seen the 

 following specimens, which are in the collection of the United States 

 National Museum : One from Nebraska ; 1 from Tifton, Georgia ; 2 

 from southern Illinois (Robertson) ; 1 from Onaga, Kansas, and 5 

 from Riley County, Kansas (Marlatt). 



Genus AGATHIRSIA Westwood 



Agathirsia Westwood, Tijdschr. v. Ent., vol. 25, 1882, p. 20. Genotype. — ^4^0- 

 thirsia rufula Westwood (by designation of Viereck, Bull. 83, U. S. Nat. Mus.> 

 1914, p. 6). 



Agathona Westwood, Tijdschr. v. Ent., vol. 25, 1882, p. 22. Genotype. — Aga- 

 thona sericans Westwood (Monobasic). 



Paragathis Ashmead, Proc. U. S, Nat. Mus., vol. 11, 1889 (1888), p. 638. Geno- 

 type. — Microdus thoracicus Cresson (Monobasic). 



Agathirsia Westwood— (Paragathis Ashmead), Ashmead, Proc. U. S. Nat. Mus., 

 vol. 23, 1900, p. 128. 



Agathirsia Westwoov)= {Agathona Westwood), Szepligeti, Gen. Ins., fasc. 22, 

 1904, p. 128. 



I have not seen the genotype of Agathona, but judging by West- 

 wood's description and figure it appears probable that Szepligeti was 

 correct in synonymizing this genus with Agathirsia. That Paragathis 

 Ashmead ])elongs here is very evident from a comparison of the 

 genotype. 



Head transverse, at least as broad as the thorax, rather strongly 

 hollowed out behind; face much broader than long from antennal 

 foramina to apex of clypeus; labium usually prominently extended; 

 mandibles falcate, with a very short tooth within; maxillary palpi 

 5-segmented; labial palpi 4-segmented; frontal impressions immar- 

 gined; no prominent elevations ])etween antennae; vertex rather 

 narrow; ocelli small; ocell-ocular line at least three times the dia- 

 meter of an ocellus; temples rather broad, bulging som_ewhat ; anten- 

 nae of the female usually short, most of the flagellar segments stout; 

 thorax stout; parapsidal furrows impressed, foveolate; furrow in 

 front of scutellum broad, deep; mesopleural furrow foveolate: propo- 

 deum short and broad, more than twice as broad as long down the 

 middle, rugose, not areolated; propodeal spiracle oval, rather prom- 

 inent; coxae stout; posterior ti])iae with numerous minute stout 

 spines on the outer side at the apex ; inner spur of posterior tibia 

 distinctly less than half the metatarsus; posterior metatarsus more 

 or less incrassate; apical tarsal segment large, long; tarsal claws with 

 a distinct basal tooth; wings yellow to nearl}^ hyaline on basal half 

 or more, the area covered by the third cubital, second discoidal, and 

 second brachial cells r^ither contrastingly dusky; second cubital cell 

 subtriangular, usually petiolate; abdomen stout, completely polished 

 with not even a suggestion of sculpture; first tergite without dorsal 



