EUMENES. 63 



the end. Thorax convex, strongly compressed, strongly con- 

 tracted toward nietathorax, but not on the prothorax, which is 



squarely truncate. All the corselet covered with a silky golden- 

 yellow pile; the posterior border of the prothorax and its anterior 



margin about the angles, two bands on the mesothorax, two on 

 the metathorax, scutels, wing scales, and a spot under the wing 

 testaceous. Abdomen olive-brown, silky, having an olivaceous 

 reflection; petiole campanulate in the middle; its dilated part 

 carrying a boss terminated by a groove, its border limited by a 

 rim or rounded band. Its linear part black at the base and a 

 little testaceous, second segment oval, lengthened, depressed. 

 Legs varied with testaceous; wings transparent, ferruginous, with 

 the extremity griseous. 



Bess. a. cliff. — This species resembles the E. olivaceus in the 

 form of its head and of its abdomen, but its thorax is more com- 

 pressed, more narrow and lengthened in proportion ; the meta- 

 thorax is much compressed and is not bicarinate. 



It may be that this is a variety of the E. sericeus of which the 

 woolly hair of the thorax has been rubbed off? 



Bab. Brazil. Bahia. 



3. E. cSarysotliorax Sauss. 



Pachymenes chrysothorax Sauss. Vespides, III, 153, 43. 



Hub. Brazil. (Typus in museo Parisiensi.) 



This species, of which I cannot again examine the type, is most 

 likely a var. of E. sericeus. It is proper to notice that the forms 

 should be those of E. pallipes. 



b. Thorax not compressed, moderately ividc. 



4. E. pallipes Sauss. — Fusco-olivaceus ; capite nigro ; antennis apice 

 subtus ferrngineis; clypeo bicarinato, apice bispinoso, testaceo; orbitis 

 parti m, mesonoti faseiis 2, scutellis, metanoto superne pleurisque, flavo- 

 testaceis ; pedibus ferrngineis; alis ferrngineis, apice fusco-nebulosis ; 

 petiolo sat dilatato, superne tumido, ante marginem canaliculate. 9* 

 Longit. 1 7 mm. 

 Pachymenes pallipes Sauss. Vespides, 1. 7f>, 3 (Syn. exol.) ; HI. l-"" ; - 



This species is not so slender as the preceding ; the petiole is 

 wider. The insect is probably sericeous when living. 

 Var. Prothorax bordered with testaceous 

 The colors are certainly very variable. 

 Hub. South America. (Paris museum.) 





