ODYNERUS. 223 



Odynerus labialus Haliday, Trans. Linn. Soc. XVII, 323 (1837).— Sauhs. 



Vespides, III, 228. 

 Odynerus Lachesis Lep. St. Farg., Hymenopt, II, 007,44 (1841).— Sauss. ; 



Vespides, I, 104, 51, pi. xvii. fig. 5, £; III, 228. 

 Odynerus maryinicollis Spin, in Gay's Hist, fisica de Chile, Zool. VI, 



250,2 (1851). 



Bess. a. diff. — Differs from 0. humeralis in its coloration ; 

 in its narrower form, in its finely punctured thorax, not rugosely 

 shagreened, and in the little ventral tubercle which is not only a 

 wrinkle like that of the 0. humeralis, but is quite tuberculiform 

 in the middle. In size it is much smaller. Differs from the 0. 

 tuberculiventris in its triple size ; in the clypeus, £ rufous, % 

 prolonged, narrow (almost an ellipse, lengthened and notched at 

 the end). 



Bab. Chili. 



55. O. vestitllS Sauss. — Niger, nigro-hirtus ; metanoto hebetato ; 

 abdomine sessili; secundo segmento subtus tuberculato ; pronoti mar- 

 gine antico et vittis 2 abdominis, luteis ; antennis nigris ; alis subfus- 

 cescentibus, costa basi subferruginea. Longit. 13 mm. 



9 . Clypeo nigro, biangulato. 



% . Clypeo elongato, planato, luteo, apice arcuatim emarginato ; antennis 

 apice uncino rufo. 



Odynerus vestitus Sapss. Vespides, III, 252, 127, $ (1854). 



Bess. a. diff. — Closely allied to O. arcuatus and excijriendus, 

 but differs clearly in its 2d abdominal segment, tuberculate 

 beneath, and wider and longer than the first. In one specimen 

 the wings are slightly smoky and ferruginous. 



Bab. Chili. 



56. O. Humeralis Halid. — Validns, corpore lato, depresso, velntino, 

 thorace ubique rugose granulato, etiam in metanoti excavations; primo 

 segmento latiore, basi paulnm petiolato ; dehino trigono-infandibulifor- 

 miter dilatato, valde punctato ; facie supera lata, snleo profundo partita ; 

 secundo segmento subtus basi transversim plioato-tuberoulato. — Corpus 

 nigrum, pilis fnlvis vel fnscis longissimia hirsntnm ; mandibulis partim, 

 pronoto, tegulia pedibuaque rufls; abdomine fasoiia duabns luteis; an- 

 tennis in dimidio basali rufis, in dimidio apicati nigris, tarsia apioe ob- 

 scuris. Alis fuaoo-violaoeis, costa et basi ferrnginei3. — Longit. 20 m m. 



9. Clypeo nigro, suboonvexo, lavi, apioe subemarginato. 



%. Clypeo luteo argenteo-piloso, ovato, valdo Indent ato ; labro fasoo, 



