lit' (iEXKRA OF irYMKXOin'ICRA. 



Family POMPILID^E. 

 Table of Genera. 



Prothora.x :is long or longer than the uielathorax ; head broad and transversely 

 compressed; an ten nse inserted low down and close to the base of the 

 clypeus. generally in more or less deep foveje, the vertex usually long, 



broad and flat o. 



Prothorax shorter than tlie nietathorax. rarely as long as tlic niesothorax ; iiead 



orbicular, as usual; autennse inserted higher u]) on ihc lace .">. 



2. — Three subniarginal cells I'arapoinpiliiM Suiitli. 



Two subniarginal cells l*laiii('Oi>!i« Latr. 



3.— Two subniargiual cells AporilM Spinohi. 



Three subniarginal cells 4. 



-I. — Marginal cell lanceolate, pointed, rarely rounded at tip .">. 



Marginal cell long, narrow, of nearly unifuiin width. obli(|uely truncate, or 



obtusely rounded at tip (j. 



5.— First discoidal cell longer than the fir.st subiuarginal cell. 



Legs strongly spinose ; submedian cell of anterior wings of the same 

 length as the median cell on the externo-medial ncrvurc. rarely longer. 



I'oiiipiliiM ' Fabr. 

 Legs serrate-spinose ; submedian cell longer than the median cell on the 

 externo-medial nervure, rarely of the .same length. 



Prioeiieiiiis Schiodte. 

 Legs not, or but feebly spinose. 



Submedian cell longer than the median on the externo-medial nervure, 

 the second discoidal cell shorter and snuiller than the third : inner 

 spur of posterior tibiae more than half the length of the basal joint 

 of their tarsi : antenuic 9 more or less convohiic. slciHkr at tip. 



A^enisi. Schiodte. 

 Submedian cell of same length as the median on the externo-medial 

 nervure, the second discoidal cell almost as long as the third; inm-r 

 spur of the posterior tibiic scarcely one-third as long as the basal .joint 

 of their tarsi, rarely half as long; j)osterior legs unusually long, es- 

 pecially their tarsi : auteunte of both sexes porrect and thickened. 



C'eropalo!^ Latr. 

 First discoidal cell rather shorter than the lirst subniarginal, ilu- second 

 subniarginal cell receiving the first recurrent nervure in tiic middle ; 

 submedian cell longer than the median on the externo-medial ner- 

 vure, the second subniarginal cell small and not half the length of the 

 second discoidal ; body subcompressed ; head long and narrower than 

 usual, the labrum exserted rather longer than theelvjuus; !cus luit 



.spinose. tar.sjil claws deeply cleft Xotoe^'plius Smith. 



(). — Second subniarginal cell smaller than the third, receiving the fir.st recurrent 

 nervure very near the tip, the first discoidal cell as long as the first 



■■ Mr. E. Saunders, in his "Synopsis of British Fossorial llymcnoptera" (Trans. 

 Ent. Soc. Loud. 1880, p. 2:51 ) calls attention to a character, pointed out by Thom- 

 son, for the separation of the closely allied genera Pompilus and Priuoiemis, the 

 tormer having the vertex impuncturcd, and that of the latter distinctly punc- 

 fured in both sexes ; this character, however, does not siem to apjily to oiir s])((ies. 



