226 HYMENOPTEBA OF AMERICA. [PART I. 



2° segmento paulo latiore quam primura, subtus basi plicato-tuberculato. 

 Niger; mandibulis, tegulis, pedibus et antennis, rufis ; his apice supra 

 griscescentibus ; abdominis primo seginento luteo-inarginato ; alis ferru- 

 gineis apice fusco-violascentibus. — Lougit. 15 inru. 

 9 . Clypeo elongato, rufo, apice bicaiinato subniarginato, utriuque nigro- 

 lnarginato. — £ ?. 



Odyn. Antuco Sauss. Et. Vespides, I, 167, 55, 9 (1852).— Gay's Hist. fis. 



de Chile, Zool. VI, Suppl. 5G2, 2 (1S52). 

 Odyn. Antucensis Sauss. Et. Vespides, III, 228. 



Bess. a. cliff. — This species is closely allied to villosus, but its 

 body is thicker; the thorax is quadrate and wide anteriorly ; the 

 color of the wings and clypeus 9 is different. 



Hab. Chili. 



62. O. CliiliotHS Sauss. — Niger, velutinus, nigro-hirtus ; 0. Antucensi 

 affiuis ; thorace brevi ; inetanoto late excavato, canthis marginato, 

 utriuque angulato ; abdominis secundo segmento subtus valde tubercu- 

 lato ; segmentis 1°, 20 margin e luteo ; antennis et pedibus rufis ; tegulis 

 nigris ; alis fusco-violascentibus, costa ferrugiuea. — Longit. 11 mm. — 



9 ?. — % . Clypeo elongato, bidentato, luteo. 



Odyn. chiliotus Sauss. Vespides, I, 167, 56, % . — In Gay's Hist. fis. de 

 Chile, Zool. VI, Suppl., 566, 9.— Vespides, III, 229. 



I do not possess this species, which seems much like 0. Antu- 

 censis. But I cannot think it the male of that, because of its 

 biangulate metathorax. The first abdominal segment seems to 

 have on its anterior face something like a suture, which allies it 

 to the subgenus Ancistrocerus. 



Hab. Chili (Paris Museum). 



63. O. ruHcoltis Spin. — Ater, velutinus, nigro-hirsutus, crassus et 

 brevis ; abdomine basi valde truncato, lato ; metanoto rotundato; ab- 

 dominis 20 segmento subtus basi plicato-tuberculato; antennis, pronoto, 

 tegulis, pedibusque, ferrugiueis ; abdomine fasciis 2 luteis ; alis ferru- 

 giueis, apice fusco-nebulosis. — Longit. 11 mm. 



J. Clypeo biangulato, rufo, nigro-marginato. — % ?. 



Odyn. rujicollis Spin. 1. 1. VI, 259.— Sauss. Et. Vespid. I, 168, 57, 9 . 



I do not possess this species. By its livery, it would seem a 

 miniature of 0. humeralis, but the abdomen is more sessile, the 

 clypeus 9 is rufous; the metathorax is rounded, not sharp, on 

 its margins, etc. The form is more that of 0. Antucensis. 



Hab. Chili (Type in the Paris Museum). 



