ANALYTICAL TABLE. 



PAGK 



Family VESPIDvE 1 



Tribe Masariis;e .......... 3 



Gen. Trimeria Sauss. ........ 4 



Gen. Masaris Fab. ........ 4 



Tribe Odynekin;e 11 



I. The Anomalipennes . . . . . . . .12 



Gen. Gayella Spin. ........ 13 



II. The Normalipennes . . . . . . . .13 



Legion I. The Zethites 13 



Gen. Zethus Fabr 13 



Division Zethus (sensu strictiore) 16 



Division Heros ........ 17 



Division Zethusculns 18 



A. Antenna? of the males terminated by a rolling-up 



spiral 19 



a. Petiole presenting a nodulous or ovoid expansion 19 



b. Swelling of the petiole cylindrical . . .23 

 * Metathorax not excavated .... 23 

 ** Metathorax excavated ; the excavation mar- 

 gined with sharp carina? ... 25 



f Thorax short, quadrate or rounded . . 25 

 ff Thorax elongate, attenuated anteriorly, ellip- 

 tical 27 



B. Antennae of the males terminated by a hook . . 29 

 a. Species having the appearance of the true Zethus. 



Head more wide than high ; thorax short, not- 

 being one and a half times longer than wide; 

 dilatation of the petiole elliptical or cylindrical, 

 a little contracted behind ; the second segment of 



the abdomen in form of a globular bell . . 29 

 0. Species which have more the appearance o( F.u- 

 menes or Discceh'us. Head less inflated, less hol- 

 lowed out at the occiput; thorax of moderate 

 length ; petiole more as in the Eumenes of Divi- 

 sion x ....:>9 



( XXV ) 



