ODYNERUS. 171 



14. Ao adiia/foatiifls Sauss. — Minutus, niger ; clypeo % tenuiter biden- 

 tato; metauoto bispinoso, superne rugoso, baud acuto ; abdomiue gracili ; 

 prhno segmeuto elongato; clypeo, mandibulis, scapo antico, puncto 

 frontali et post-oculari, pronoti linea antica, tegulis, puncto subalari 

 abdominisque segrneutorum marginibus anguste, flavis. Pedibus flavis, 

 femoribus nigris ; alis subbyalinis. £ . — Long. 8 rnm. 



Odynerus adiabatus Sauss. Vespides, I, 133, 20, % (1852),, 



Hob. North America. Carolina. (Type in the Paris Museum.; 



15. Ao ffastidiiosuscilllis Sauss. — Niger, clypei ?umrni fascia arcuata 

 utrinque, macula frontali et post-oculari, scapo subtus, pronoti margine, 

 tegulis, fascia interrupta scutelli, fascia post-scutelli, macula subalari 

 abdominisque fasciis 4, flavis ; fascia primi segmenti utrinque dilatata ; 

 pedibus basi nigris ; alis subhyalinis. Long. 10 mm. £ • 



Odynerus fastidiosusculus Sauss. Et. Vespid., I, 137, 19, £• 

 Hab. Brazil. (Type in Paris Museum.) 



10. A. Santa-Almas Sauss. — Niger, densissime punctulatus, clypeo 

 grosse cribrato ; pronoto subangulato ; metanoti foveola acutissime 

 marginata, bidentata; abdomine subvelutino, ovato ; puncto frontali et 

 post-oculari, litura angusta pronoti abdominisque vittis 3, flavis ; alia 

 ferrugineis ; — 9 clypeo atro flavo bipunctato, antennis atris, macula 

 subalari et 2 scutelli, flavis; — $ clypeo, subbidentato, flavo, scapo flavo 

 lineato. 



Odynerus Santa-Anna Sauss. Revue et Magas. de Zool., IX, 1857, 273. 



Total length, 10 mm. ; wing, 11 mm. 



?. Clypeus pyriform, truncate, or feebly subbi dentate, very 

 coarsely punctured. Prothorax not retracted before ; its angles 

 distinct. Mcsothorax with a little smooth carina before; its 

 grooves moderately pronounced. Post-scutel truncate, offering 

 a feeble ridge at the. -summit of its posterior face ; this ridge 

 interrupted and finely crenulatc. Plate of the metathorax 

 triangulate, very clearly bordered all around by very trenchant 

 straight ridges, which inclose the two pentagons in a very distinct 

 manner. The lateral angles dentiform ; the superior ones acute. 

 Abdomen punctured, ovate; the first segment narrower than the 

 2d, punctured, having a very strong suture. Border o( the 2d 

 and the following segments densely punctured, but neither rugose 

 nor channelled. That of the first offering a ounctured line. 



