Species of Aculeate Hymenoptera. 37 



of its burrow ; laying it down, it retreated, apparently to see that 

 all was ready, and then, re~emerging, seized the grasshopper and 

 backed into its hold." 



GenusMoNEDULA, Latr. 

 1. Monedula signata, Latr. Gen. Crust, et Inso iv. 100. 

 Vespa signata, Linn. Syst. Nat. i. 57 4;, ll. 

 Hab. Brazil, S. America. 



Group SOLITARY WASPS. 



Family EUMENID^, Westw. 



Genus Montkzumia, Sauss. 



1. Montezumia rujipes, Sauss. Monog. Guepes Sol. p. 89, 3, 



pi. 15, fig. 1. 

 Hab. Brazil. 



Genus Odynerus, Latr. 

 Odynerus 'productus. 



0. niger, capite thoraceque fiavo-guttatis, et rude punctatis ; ab- 

 domine fasciis duabus flavis ornatis. 



Male. Length 3| lines. Black, the head and thorax strongly 

 punctured ; the clypeus and a small spot above it, a minute one in 

 the sinus of the eyes and another behind them, the scape in front 

 and a spot on the mandibles, pale yellow ; the flagellum fulvous 

 beneath. The posterior margins of the prothorax, a spot beneath 

 the tubercles, the tegulse, post-scutellum, the metathorax behind 

 and a spot on the anterior and intermediate tibiae, yellow ; the 

 anterior tibiae and tarsi ferruginous ; the wings hyaline^ with a 

 dark fuscous stain in the marginal cell ; a ferruginous spot on the 

 tegulae. Abdomen finely punctured, the first and second segments 

 with a broad yellow margin, which is continued beneath ; the 

 second segment produced in the middle, forming a sharp angle or 

 tooth ; the following segments very narrowly bordered with yellow ; 

 the first segment entirely pale beneath. 



Genus EuMENEs, Latr. 

 Eumenes placidus. 

 E. niger, antennis subtus, prothorace, metathoface latefalibus, 



rufis ; abdomine flavo-fasciato. 

 Male. Length 4| lines. Black; the antennae ferruginous; the 

 scape above and the flagellum in the middle above, fuscous ; the 

 clypeus, a minute spot above, another in the sinus of the eyes and 



