Species of Aculeate Hymenoptera. 39 



tarsi ferruginous, palest beneath. The basal segment of the abdo- 

 men with a narrow yellow border to its apical margin. 



This species is closely allied to the P. Acteon and P. Uliaciosus 

 of Sanssure's Monograph, but apparently distinct. 



Genus PoLYBiA, St. Farg. 

 1. Polybia fuscicornis, Sauss. Mon. Guepes Soc. p. 210, 1 ; 



St. Farg. Hym. i. 539. 

 Hab. Brazil. 



2. Polybia fasciata, Sauss. Mon. Guepes Soc. 182, 21, 

 Hab. Panama. 



3. Polyhia faslidlosuscula, Sauss. Mon. Guepes Soc. 197, 39. 

 Hab. Brazil. 



4. Polybia metathoracica, Sauss. Mon. Guepes Soc. p. 198, 41, 

 pi. 25, fig. 1 (var. /3). 

 Hab. Cayenne. 



5. Polybia 'pediculata, Sauss. Mon. Guepes Soc. p. 205, 50, 



pi. 26, fig. 7. 

 Hab. Brazil. 



6. Polybia. simillinia, 



P. nigra sub-sericea, alis sub-hyalinis, marginibus anterioribus 

 fuscis. 



Female. Length Sg lines. Black and thinly covered with a fine 

 silky cinereous pile ; the face shining, the clypeus produced in the 

 middle, the anterior margin being angulated ; the antennae black, 

 with the apex beneath testaceous ; the legs black, with the claws 

 rufo-testaceous ; wings sub-hyaline, the anterior margin of the 

 superior pair dark fuscous. Abdomen petiolated, campanulate; 

 the rest of the abdomen cordiform. 



This species is very like P. socialis, but its mandibles are black, 

 its thorax somewhat broader and shorter, and the first segment is 

 broader and the petiole shorter. 



Genus Nectartna, Shuck. 

 1. Nectarina analis, Shuck, Cab. Cycl. Hist. Ins. p. 183. 

 Brachygasler analis, Ferty, Del. An, Art, t. 28. 

 Hab. Brazil; S. America; Mexico. 



