TRAVAUX INÉDITS. 57 



torum 2 ; -5 ; margine postico flavo-limbato ; alis hyalino- 

 ferrugineis, apice grisescentibus ; tegulis ferrugineis. — 

 c? clypeo truncato, flavo; puncto frontali ; scapo subtus, 

 tibiis antice, flavis. — Long. $ 11 mill. — Ager argen- 

 tinus. 



7. 0. la Platée, Sauss. — Niger, punctatus abdomine 

 sericeo, basi truncato; clypeo Ç apice dentulis 2 ferrugi- 

 neis terminato, scapo subtus rufo ; pronoti margine pos- 

 tico, signatura subalari, punctis2 tegularum, flavis; abdo- 

 minis segmentorum 1', 2 ; margine flavo, 3'-4' tenuiter 

 flavescente ; tibiis 1, 2 linea flava ; alis ferrugineis, macula 

 radiali fusca. — Long. 12 mill. — Ager argentinus. 



8. 0. zonatus. — Niger, punctatus ; thorace quadrato, 

 paulo longiore quam latiore, metanoto excavato, acute 

 marginato, biangulato; puncto frontali, pronoti margine 

 antico et postico, macula subalari, tegulis, scutelli punc- 

 tis 2, postscutello, metanoti canthis, abdominis segmen- 

 torum margine tibiisque partim, flavis; alis nebulosis ; 

 — d 1 clypeo polygonali flavo, argentato ; antennis subtus 

 ferrugineis, scapo linea flava. — Long. 11 mill. — 

 Cayenna. 



9. 0. californicus. — Médius, niger, fulvo-tomento- 

 sus ; clypeo Ç piriformi, valde punctato; thorace lœvi, 

 tenuiter punctato ; metanoto haud rugoso, biangulato, sed 

 canthis obliteratis, nec acutis, nec rugosis ; abdomine 

 conico, segmentis 2° et sequentibus in margine rugose 

 punctatis; fascia arcuata in summo clypeo, pronoti et 

 abd. segmentorum 1 ; , 2 ; limbo, macula subalari, punctis 

 2 in tegulis, postscutello et metanoti canthis; luteis, an- 

 tennis fronte et pedibus immaculatis; alis diaphanis, 

 venis fuscis. — Long. 11 mill. — California. 



