240 HYMENOPTERA OF AMERICA. [PART I. 



we are not sure that this insect belongs to this group, although 

 the appearance Is quite that of 0. cubensis and neighbors. It 

 might possibly go to the group of the Odyneri with hooked % 

 antenna' ? 



C. Only the first two abdominal segments margined with yellow. 

 {The 3d and -ilk sometimes indistinctly marginate.*) 



74. O. Gayi Spin. — Crassus, thorace quadrato, postice late excavato 

 obtusangnlato; abdomine brevi, lato, conico, basi trnncato, priuio seg- 

 mento sec undo aequi lato; macula froutali, orbitis internis, scapo subtus, 

 pronoti margine antico, margine postico tenuiter, macula subalari, post- 

 scutello, inaculis 2 metanoti sum mi abdominisque segmentorum 1,2 

 limbo, albidis ; alis subhyalinis autice subferrugineis, apice griseis. 



% . Clypeo subemarginato, luteo. — J ?. 



Odyn. Gayi Spihola, in Gay's Hist. fis. de Chile, Zool. VI, 260 (1851). 

 — Sauss. Vespides, I, 170, 59; pi. xvii, fig. 7, % . 



II ib. Chili. (Type in the Paris Museum.) 



75. O. praecox Sauss. — Niger, capite et thorace confertira punctatis ; 

 abdomine sericante, coniuo, basi lato; macula mandibularum, linea 

 frontis verticali, pronoti margine postico, nee non antico tenulter, 

 macula subalari, punctis 2 in scutelli angulis, post-scutello, maculis 2 

 metanoti abdominisque segmentorum 1', 2 1 margine, flavis ; reliquorum 

 margine fusco ; tibiis flavo-lineatis ; tarsis fusco-ferrugineis ; alis sub- 

 hyalinis, costa obscuriore. 



9. Clypeo apice dentulis duobus runs. — % ?. 



Odyn. prcecox Saoss. Et. Vesp. Ill, 254,' 130 ; pi. xi, fig. 9, J, (1854). 



11(d). The southern parts of Brazil and Uruguay. (Paris 

 Museum. ) 



Observation. — This species may possibly belong to the Division 

 Odynerus with hooked male antennae? but its peculiarities bring 

 it nearer to the species of Division Pachodynerus. 



7G. O. ILa Platta? Saoss. — Niger, punctatus; abdomine sericeo, basi 

 truncato; clypeo 9 apice den'ulis 2 ferrugineis terminato, scapo snbtus 

 rufo ; pronoti margine postico, signatura subalari, punctis 2 teg u lam m, 



' The note intercalated in the text of the description of this species 

 referred it to the heading A (Group of the (). Megtzra). One more of the 

 chefs d'oeuvre of the printer, who is the cause of all other more grave 

 faults introduced by his negligence into my work on the Vespides. 



