224 IIYMENOPTERA OF AMERICA. [PART I. 



anteunis apice subcocbleatis unciuo arcuato, obtuso, coinpresso, rufo, vel 

 nigro-vario. 



Odynerus humeralis Haliday, Trans. Linn. Soc. XVII, 324 (1837). — 



3S. Vespides, III, 228. 

 Odijn. chilensis Lep. St. Fakg. Hymen. II, G43, 28 (1841). — Spisola in 



Cay'.- Ili.-t. lis. de Chile, Zool. VI, 255, 1. — Sacss. Vespides, I, 166, 



54, pi. xvii, fig. ; III, 228. 



This large species has some very salient lateral ridges upon 

 tin' metathorax ; the superior ridges of the concavity are saliently 

 indicated, especially among the males, but the rugosities which 

 cover the metathorax as well as the remainder of the thorax 

 render them obtuse and indistinct. The antennas % terminate in 

 a blunt rufous hook or in a longitudinal spiral ; the clypeus % is 

 terminated by two rather long spines, and in the male the tarsi 

 are mostly blackish. It is, however, closely allied to 0. tuber- 

 culatus. Comp. this species. 



Hab. Chili, and the western coast of South America. 



*i"i. O. Taralmcensis Sauss. — Validus; 0. humerali similis; niger; 

 pronoti margine antico et abdominis fasciis duabus, luteis ; anteunis 

 nigris, scapo rufo ; tegulis nigris ; mandibulis et pedibus, rufis ; alis 

 ferrugineis, apice violascentibus. — J ?. 



% . Clypeo luteo, apice dentibus 2 distantibus armato. 



Odynerus Tarabucensis Sauss. Vespides, III, 250, 125, $ (1854). 



Hab. Bolivia (I do not possess this species. Type iu the Mus. 

 of Paris). 



h. Wings fuscous, with violet iridescence. 



5S. O. altoocinctus Pols. — Niger, vclutinus, nigro-hirsutus. Clypeo 

 piriform! nigro, apice valde bidentato; autennis, mandibulis et labro, 

 rulis ; metathorace rotundato; abdomine pilis nigris longis sparso, 

 tantnm primo segmento anguste albido-limbato ; secundo segmento 

 subtus hand tuberonlato ; pedibus rufis. femoribus postice nigiis ; alis 

 fuscescentibus, violascentibus praecipue apice ; tegulis nigris. J . Long. 

 20 mm. 



Odynerus albocinctus Pols a. Strobel, Atti delta Soc. Italiana de Sc. Nat. 

 XI, 1868, 256, 9. 



Hah. The Argentine Republic. Province of Mendoza. 

 This is the only species of the type Hypodynerus found as yet 

 on the Oriental side of the Andes. 



The form not having been described, I cannot assign to this 



