ZETHUS. 51 



Abdomen gracile, petiolo elongato, par u in inflato, punctato, apice pancto 

 impresso nullo; secundo seginento sat longe pedunculato, ovato-dilatato, 

 depresso et tenuiter punctato. — Puncta 2 frontis, pronoti et tegulaium 

 niargo, post-scutellum, fascia? 2 metanoti et abd. segmentorum 1-2 

 margo, nee non fascia ntrinque petioli secundi segmenti (vel petioli 

 apicis) albida; femora intermedia subtus albido varia; ala? hyalinse, 

 venis ferrugineis, apice griseo-nebulosae. Longit, 0.015 ram. 



9- Clypeo nigro, rugoso, trimcato, sab-bidentato (vel sub-tridentato). 



■£ . Clypeo albido, supra nigro, margine infero bidentato, tenuissime nigro 

 limbato; antennis nigris, uncinatis. 



Epipona dienmboda Spinola! Gay's Historia fisica de Cbile (Fauna Chi- 



lena), VI, 1851, 250. 

 Zethus discomboda Sauss. Vespides, I, 21, 25. 



Hab. Chili. (Typi in museo Parisiense et in auctoris servantur.) 



C. Species of which the section remains undetermined. 



46. Z. ChicotencatI Sapss. (Fig. 5, 5a.) — Niger, politus, fulvo 

 'hirtus, clypeo convexo, capite dense punctulato, thorace laevigato, in 

 medio disco nitido, impunctato ; pronoto antice et pone angulos in 

 lateribus cristato-marginato ; metanoto baud excavato, ubique rugose 

 Striato, petiolo parum inflato, impunctato, nitidissimo, secundo seginento 

 longe pedunculato, sericeo, secundum marginem punctato, marline sub- 

 jacente reflexo ; antennis subtus flavis; punutis 2 frontalibus, maculis 

 2 metanoti, et abdotn. segmentorum limbo (aliquandoque pronoti), 

 tibiisque supra, flavis ; alis ferruginescentibus. O. 



Zethus Chicotencatl Sauss. Revue et Mag. de Zool. 1857, 271. 

 Total length, 17 mm. ; whig, 12 mm. 



?. Mandibles strongly tridentate. Clypeus rounded, very 

 convex, but finely punctured, truncate or sub-bilobed on its in- 

 ferior border, in the middle of which is a smooth space. Head 

 densely punctured, but not rugose. Ocelli salient, placed in a 

 regular triangle on the vertex, the head a little contracted behind. 

 Thorax shining and polished, not being punctured above the 

 middle; margin of prothorax forming a salient lamina; this 

 margin reflexes upon its angles and prolongs itself behind, along 

 the lateral border of the prothorax over a moiety of the distance 

 from the wing scale. Mesothorax punctured along the seutellnm. 

 without groove on its hinder part, but carrying a double longi- 

 tudinal groove on its anterior moiety; scntellum convex and 

 shining, feebly punctured. Metathorax a little flattened behind, 



