ODYNERUS. 225 



species its place with perfect certainty in the subdivisions of this 

 group. 



C. Form very wide, short and depressed, first segment very wide; 

 its anterior face sessile, in the form of a wide triangle; its 

 superior face very short, 3—4 times as wide as long. 



a. Wings wholly obscure, violet. 



59. O. Tillosiis Sadss. — 0. Antucensi statura, forrnis et facie affinis, sed 

 pronoto et capite angu.stioribus ; crassus, ater, velutinus, valde uigro 

 hirsutus ; metanoti excavatione polita ; abdoinine sessili ; primo seg- 

 mento lato, breviter truncate-; secundo subtus basi eminente plicato ; 

 mandibulis, an tenuis et pedibus rufis ; his basi et fere usque ad gtmua 

 nigris ; tegulis nigris, rufo-maculatis ; abdominis vittis 2 luteis angustis ; 

 alis infuscatis, violascentibus. — Longit. 15 mm. 



9 . Clypeo uigro, lsevi, apice punctato, pauluni emarginato. — £ . . . . ? 



Odyn. villosus Sauss. Vespides, I, 165, 53, $> (1852). — Ga*'s Hist, fisic 

 de Chile Zool. VI, Suppl. 5(33, 4 (185^2). 



This may be a variety of 0. obscuripennis. 

 Bab. Chili. 



6©. O. otosCMripenmis Spin. — 0. villoso similis, sed major, thorace 

 rugoso, granulate; ater, villosus ; antenuis nigris, scapo rufo ; pedibus 

 rufis vel nigresceutibus, basi nigris ; abdomine fasciis 2 luteis. — Long. 

 lb mm. 



Odyn. obscuripennis Spin, in Gay's Hist, fisic de Chile Zool. VI, 259, 4, 

 J (1851).— Sadss. Vespides, I, 105, 52; III, 22S. 



Odyn. Coquimbensis Sacss. iu Gay's Hist, fisic de Chile Zool. VI,. Suppl. 

 5G1, 1 (1852). 



Hab. Chili (Type in the Paris Museum). 



This species not being in my possession, I cannot give a com- 

 plete diagnosis of it. 



b. Wings ferruginous ivith the, apex fusco-violaceus or fuscous, and the 

 anterior margin rufous. 



61. O. Antucensis Sacss. — Crassus, velutinus, pilis nigris longissimis 

 valde hirsutus. Corpus depressum ; thorace quadrato, tenuiter punc- 

 tato ; post-scntello et metanoto verticaliter truncatis, hujus facie postica 

 trigonali, fere plana, parum late excavata, ut reliquus thorax velutino- 

 rugulosa, canthis obtusis marginata. Abdomine lato, depresso, sessili ; 

 primo segmento antioe valde truncato, faciem anticam trigonnlem et 

 faciem superam brevissimam et latissimam praebente; facierum illarum 

 concursus canthum transversum efficiens ; facie supera sulco partita; 

 15 



