38 Mr. F. Smith's Descriptions of new 



a narrow line behind them, yellow ; the clypeus bidentate. Thorax, 

 tlie prothorax and the metathorax at the sides, as well as the legs, 

 ferruginous ; a black spot on each side of the prothorax, its pos- 

 terior margin narrowly yellow; the femora and tibia3 more or less 

 fuscous above; the wings sub-hyaline, their anterior margin fus- 

 cous. Abdomen : the petiole ferruginous at the sides and apex; 

 its apical margin, as well as that of the second segment and the 

 middle of the posterior margin of the three following, yellow ; the 

 yellow margin of the second segment continued beneath the abdo- 

 men, which is ferruginous and has a dark stain in the middle of 

 the second segment. 



This species resembles the Eumenes Uruguyemls of Saussure 

 and may possibly be its male. 



Group SOCIAL WASPS. 



Genus PoLisTEs, Latr. 

 1. Poli.stes Canadensis, Sauss. Mon. Guepes Soc. p. 72, 32. 

 Vespa Canadensis, Linn. Syst. Nat. i. 952, 25. 

 Hab. North and South America ; Brazil. 



2. PoUsles annularis, St. Farg. Hym. i. 522, 7. 

 Hab. North and South America ; Brazil. 



3. Polistes versicolor, Sauss. Mon. Guepes Soc. p. 81, 44. 

 Hab. Brazil; Cayenne; St. Domingo. 



Polistes modestus. 

 P, clypeo, mandibulis, antennarum basi, tibiis tarsisque anterio- 

 ribus ferrugineis ; oculorum orbitis, prothoracis margine pos- 

 teriori, metathorace lineis duabus et segmentorum marginibus 

 flavis. 

 Female. Length 6 lines. Black, the abdomen covered with a 

 fine silky cinereous pile ; the clypeus, mandibles, scape and four 

 basal joints of the flagellum, ferruginous ; a line on the lower por- 

 tion of the inner orbits of the eyes and a line behind them pale 

 yellow; the margins of the prothorax, the inner margin of the 

 tegulae, the post-scutellum and two longitudinal lines on the meta- 

 thorax, yellow; the wings hyaline, the anterior margin of the 

 superior pair slightly fulvous, with a fuscous stain in the marginal 

 cell ; the nervures pale ferruginous ; the anterior tibiae and all the 



