50 TERA OF AMERICA. [ PART I. 



-serves to be noted us lit to serve as the type of one 

 if this genus. 



B. Antennae of S terminated by a hook. 



43. Z. Hilarianus Saoss.— Gracilis, niger; capite dense punctato, 

 supra et pone ocnlos tumefacto; thorace minus dense punctato; pro- 

 i valde cristato-marginato, sed angulis baud acutis ; mesonoti disco 

 carinis 2 laevibus trajecto; post-scutello medio subdentato; metanoto 

 velutino, rugoso, striato, in medio canaliculato; abdominis petioli 

 tumefactione o globoso-inflata punctulata; secnndo segmento 



globoso, sericeo, basi sat longe petiolato (petiolus tertiam partem longi- 

 tudiuis effioiens); segmentis reliquis punctatis. Corpus omnino velu- 

 tinum, argenteo-sericeum ; puncta frontalia 2, maculae 2 post-oculares, 

 aiitpimarnm articuli 1-3 et apex, thorax, petioli latera et pedes, rnfa ; 

 petioli apex et lineoln utrinque in secundi segment! petiolo, flava; seg- 

 mentorum limbus tenuiter piceus vel rufus. Ala3 infuscatse, co.sta nigra. 

 Longit, 0.01 6 mm. 



J. Clypeo convexo, punctato, apice late subexciso, tridentulato ; maculis 

 2 lateralibus runs. 



'5. Clypeo truncato, rufo vel flavescente macula media et basi nigris, vel 

 ro margiue infero rufo et laterali llavo; anteunis apice ultimo 

 minuto rufo. 



'' . Color variabilis, plus minusve rufescens vel nigrescens ; disco 

 mesonoti obscuro vel nigro, carinis runs ; etc. 



Zethus Hilarianus Sauss. Vespides, III, 120, 7. pi. vi, fig. 6, 9, 1854. 



- iu having the margin of pronotum and the post-scutel 

 yellow, and in the distribution of colors, the reddish and blacK 

 passing one to the other; but, nevertheless, a distinct species 

 by its mesothoracical carinae. 



Hab. Brazil. Middle of the province of Goyaz. (The type 

 is in the Paris museum.) — Venezuela, Caracas. 



II. Z. penicillatus Spin. 



h niculata Spin. Mem. Acad. Turin. XIII, 1853, 80, 60. 



v*espides, 1. 22 ; III, 120, 6. 



•^'" i tsarinato; colore affinis Z. nigro. 



Huh. Brazil. Para. (Typus in mus. Taurinense.) 



15. Z. dicomlxxla Spin.— Niger, gracilis, dense punctatus, cinereo- 



antice cristato-marginato, angulato; mesonoti disco 



bioarinato; metanoto convexo, velutino, Laud rugoso, in medio striato. 



