304 PROCEEDINGS OF THE ACADEMY OF [1894. 



In the foregoing table Paranysson and Hypom/sson are considered 

 synonymous with Nyssou. The lack of the thii-d submargiual cell 

 in N. {Ilyponysson) hicolor is simply an anomaly.^'' I have recently 

 received another anomalous species (which is new) from New Mexico, 

 which lacks the second (petiolated) submarginal cell. 



Tribe IV.— STIZINI. 



Marginal cell about t\A ice as long as the first submargiual; spurs of 

 hind tibiie enlarged in the 9 , and the pygidium well developed; 

 abdomen ( $ ) with a single spine at apex . . . Sphecius Dhlb. 



Marginal cell much shorter than the first submarginal; spurs of hind 

 tibipe short in both sexes, not enlarged; no pygidium, at the 

 most with two short ridges on each side of apical portion of 

 last dorsal abdominal segment; abdomen {$) with three spines 

 at apex Stizus Latr. 



Bembecinus and Mecjastizus are considered synonymous with Stizus 

 in the foregoing table." 



Tribe V.— BEMBICINI. 



Anterior ocellus linear, transversely arcuate. 



Maxillary palpi six-jointed, labial palpi four-jointed. Metatho- 

 rax excavated posteriorly, compressed laterally; last ventral 



segment ( $ ) with three spines Bembidula Burm. 



Maxillary palpi four-jointed, labial palpi two-jointed; metathorax 

 flat or convex behind, not compressed laterally; last ventral 



segment ( $ ) with a single spine 



Bembex Fabr. {=3ficrobembex Patt.). 



Anterior ocellus elliptic, roimd or reuiform. 



Maxillary palpi three-jointed, labial palpi one-jointed; anterior 

 ocellus longitudinally elliptic; maxillae very long, reaching the 



hind coxje Steniolta Say. 



Maxillary palpi six-jointed, labial palpi four-jointed; anterior 

 ocellus round or reniform; ma?cillse short . . Monedula Lair. 



Tribe VI.— NEOLARRINI. 



This tribe is based on a single genus Neolarra Ashm. which may 

 be distinguished by its tribal characters. I have not examined this 

 genus during the preparation of this classification, but if my memory 

 serves me right it should be placed here, between the Bcmhicinl and 

 Both)iostethhii. 



16 See Handlirsch. «i*'i.. K. Ak-xl. "Wissensch., Wien. Math.-natnrw. Classe, 

 XCV, Abth. 1, p. 293. 



1^ See Handlirscli, 1. u.-Cl, p. :iti-:it. 



