398 Mr. F. Smith on new Species of Mexican Pompilidse. 

 Genus Priocnemis, Schiodte. 

 1. Priocnemis velox. 



P. ferruginous, alis flavo-hyalinis fasciis duabus fuscis. 



Female. Length 5 lines. Ferruginous, inclining to a brick-red ; 

 the head black, with the clypeus, mandibles, and antennae ferruginous, 

 the six apical joints of the latter black, the tips of the mandibles 

 black. The sutures of the base of the metathorax and post-scutellum 

 black ; the pectus and the coxae behind black ; the trochanters and 

 extreme base of the femora black ; the wings flavo-hyaline, the anterior 

 pair with two fuscous fasciae and the tips fuscous, the nervures tes- 

 taceous. The extreme base of the abdomen black, and its apex with 

 a little fulvous pubescence. 



Ilab. Oajaca (Mexico). In the National Collection. 



Genus Notocyi>htjs, Smith. 



1 . Notocyphus plagiatus. 



N. niger, vertice vittaque thoracis lata longitudinali rubris, alis nigro- 

 fuscis violaceo submicantibus. 



Female. Length 1 inch. Black ; the abdomen with a fine change- 

 able silky lustre ; the head above the insertion of the antennas and a 

 broad longitudinal stripe on the pro- and mesothorax, the scutellum, 

 and post-scutellum blood-red ; the labrum oblong, narrowed towards 

 its anterior margin, which is transverse ; the wings very dark brown, 

 with a slight violet iridescence ; the legs elongate, very slightly spi- 

 nose ; the claws bifid. 



Hah. Mexico. In the National Collection. 



2. Notocyphus albopictus. 



N. niger, clypei prothoracis margine postico, scutello, postscutello, meta- 

 thoracis angulis abdominisque fascia albis. 



Male. Length 4£ lines. Black ; the inner orbits of the eyes, not 

 extending to their summit, the posterior margin of the prothorax, a spot 

 on the scutellum and another on the post-scutellum, the apical angles 

 of the metathorax, and the basal half of the third segment of the ab- 

 domen white ; the anterior tarsi rufo-testaceous ; the body covered 

 with a thin cinereous pile ; the wings hyaline, the apical portion of the 

 superior pair beyond the second submarginal cell fuscous. 



Ilab. Mexico. In the National Collection. 



Genus Ferreola, St. Farg. 



1. Ferreola variegata. 

 F. nigra, metathorace abdominisque basi pube argentata vestitis, seg- 

 mento tertio abdominis ferrugineo, alis nigro-fusco fasciatis. 



