ODYNERUS. 171 



14, Ao adiatoatus Sauss. — Minutas, niger ; clypeo % tenuiter biden- 

 tato; uietanoto bispinoso, superne rugoso, baud acuto; abdomine gracili; 

 priuio segmento elongato ; clypeo, mandibulis, scapo antice, puncto 

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

 abdominisque segmeutorum margiuibus anguste, flavis. Pedibus flavis, 

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



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



Hab. North America. Carolina. (Type in the Paris Museum.) 



G.5. Ao ffastcdiosajscislus Sauss. — Niger, clypei summi fascia arcuata 

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

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

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

 pedibus basi nigris ; alis subbyaliuis. Loug. 10 mm. J . 



Odynerus fastidiosusculus Sauss. Et. Vespid., I, 137, 19, J. 

 Eab. Brazil. (Type in Paris Museum.) 



1<S. Ao §aratfa-Aianae Sauss. — Niger, densissime punctulatus, clypeo 

 grosse cribrato ; pronoto subangulato ; metanoti foveola acutissiuie 

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

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

 ferrugineis; — J clypeo atro flavo bipunotato, 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 lengtb, 10 mm. ; wing, 11 mm. 



J. Clypeus pyriform, truncate, or feebly subbidentate, very 

 coarsely punctured. Prothorax not retracted before ; its angles 

 distinct. Mesothorax 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 crenulate. 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 of the 2d 

 and the following segments densely punctured, but neither rugose 

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



