66 HYMENOPTEKA. 



4. Decameria varipes. 



Nigra ; pronoto, mesonoto, lateralibus tegulis, ore, facie orbitaque exteriore lsete rufis ; coxis trochanteribusque 



albidis ; alis fumatis, cellula cubitali tertia fere longiore quam secunda; antennis 11-articulatis. 

 Long. 5 millim. 



Hab. Guatemala, Cerro Zunil 4000 to 5000 feet (Champion). 



The third joint of the antennae (which are longer than the abdomen) is nearly double 

 the length of the fourth ; the second cubital cellule is a very little shorter than the 

 third ; the second recurrent nervure is received a little beyond the second transverse 

 cubital. The head is small, narrowed behind ; the eyes project in front, so that the 

 face retreats considerably. The greater part of the middle lobe of the mesonotum, 

 the sides of metanotum, and the pleurae immediately below the wings are red ; the 

 basal half of the anterior femora is white ; the abdomen is obscure fuscous across the 

 segments above. 



5. Decameria cordoviensis. 



Diciynna cordoviensis, Norton, Trans. Amer. Ent. Soc. iv. p. 81 *; Cresson, loc. cit. viii. p. 38. 

 Hab. Mexico, Cordova 1 . 



6. Decameria polita. 



Dictynna polita, Norton, Trans. Amer. Ent. Soc. iv. p. 81 1 ; Cresson, loc. cit. viii. p. 38. 

 Hab. Mexico \ Cordova. 



7. Decameria fumipennis. 



Acherdocerus fumipennis, Kirby, List of Hymen, i. p. 92. t. 7. f. I 1 . 

 Hab. Mexico 1 . 



Kirby describes the antennae as 9-jointed ; but both in the figure and in the enlarged 

 drawing of the antenDae they are represented as distinctly 10-jointed ; and Mr. Kirby 

 tells me that on a re-examination of his type he finds that this is the real number. 



8. Decameria facialis. 



Nigra; thorace, facie, coxis trochanteribusque rufis ; antennis 10-articulatis ; alis fumatis. 

 Long. 6-7 millim. 



Hab. Guatemala, Tamahu (Champion). 



The sutures on vertex are deep, and there is a transverse furrow bounding the vertex 

 above the antennae, but there is no longitudinal frontal furrow ; the vertex is depressed 

 in the centre behind the ocelli. The antennae are thick ; the third joint is scarcely 

 one quarter longer than the fourth ; the last is longer than the ninth. The second 

 transverse cubital nervure is absent. 



