56 kev. et mag. de zoologie. [Février 1870.) 



armato; antennis nigris, pronoti margine postico, macula 

 subalari, tegulis, fascia scutelli et postscutelli, metanoti 

 angulis, abdominisque segmentonmi 1-3 margine pallide 

 flavis ; alis antice fasco marginatis. — d Clypeo bidentato, 

 luteo. — Long. 10 mill. — Ager argentinus. 



k. A. conspicuus. — Graeilis, niger, ubique punctatus; 

 capite et thoraee crassissime et rugose punctatis; protho- 

 race antice cristato, angulato ; postscutello valde truncato, 

 facieposticapolita ; metathorace utrinque haud angulato, 

 foveola laevi, tenuiter marginata ; abdomine dense punc- 

 tato, \° segmento minuto, acute smurato; antennarum 

 scapo subtus, puncto frontali, subalari, pronoti abdo- 

 minisque segmentorum, 1-2 limbo postico, fascia inter- 

 rupta scutelli, fascia postscutelli lineaque femorum inter- 

 mediorum. luteis. — Long. 9-5 mill. — Ager mexicanus. 



Subgenus OBYNERUS propr. dict. 

 Divisio Hypodynerus, Sauss., Vesjrides, III, 225. 



5. 0. tapiensis, Sauss. — Faciès Montezumœ. Omnino 

 niger; capite et thoraee punctatis, velutinis, nigro-hirsu- 

 tus ; thoraee depresso ; metathorace utrinque lateraliter, 

 superne valde, carinato, ipse in foveola velutino ; abdo- 

 mine nitido, depresso, primo segmento infundibuliformi; 

 pedibus rufis, basi nigris; alis nigro-chalybaeis ; — g , 

 clypeo argentato bidentato, femoribus intermediis subtus 

 in medio dilatatis, basi excisis. — Long. 20 mill. — 

 Quito. 



Divisio Pachodynerus. — Antennis <3 simplicibus,, opicc 

 haud uncinatis. 



6. 0. argentinus, Sauss. — Niger, confertim punctatus; 

 metanoto postice rugoso, rotundato , utrinque angulo 

 nullo. superne utrinque acute marginato, canthis a post- 

 scutello fissura sejunctis; pronoti abdominisque segmen- 



