"20 PROCEEDINGS OF THE NATIONAL. MUSEUM. vol.. 61. 



than broad, feebly convex above, armed anteroventrally with an 

 acuminate spine, which curves backward. Postpetiole a little longer 

 than broad, moderately convex above. 



Head with sparse, fine punctures, strongly shining. Mandibles 

 coarsely striate. Thorax and epinotum granulosely punctate and 

 subopaque ; sides of pronotum obscurely striolate. Petiole and post- 

 petiole similarly but very feebly sculptured. Gaster and legs and 

 scapes shining; funiculus subopaque. 



Very fine and silky, long, erect yellow hairs scattered on head, 

 body, and appendages. 



Brownish yellow, gaster lighter than the rest. 



Type locality. — Honduras: Progresso. 



Cotyves.—Q^t. No. 2M46, U.S.N.M. 



Described from workers of an army that swarmed upon me while 

 I was sitting on the ground in the forest examining a Pheidole nest. 

 The sting is temporarily painful, but the effects of short duration. 



E. impuden.s is near E. alfaroi Emery, described from Costa Rica, 

 which differs in having the thorax flatter, the head longer and more 

 pointed at the occipital corners, in lacking the distinct eyes, in the 

 widely separated, coarse punctation of the pro-mesonotum, the more 

 elongate and coarsely sculptured epinotal base and in the shorter and 

 triangular anteroventral spine on the petiole. 



The distinct eyes, the sharp anteroventral petiolar spine, the 

 strongly shining head and the bright color of impudens make it an 

 easily recognizable species. 



Subfamily PsEUDOMYR:NriNAE. 



PSEUDOMYRMA GRACILIS (Fabricius). 



Honduras: San Pedro Sula. 



PSEUDOMYRMA GRACILIS (Fabricius). variety MEXICANA Forel. 



Honduras: Tela. 



PSEUDOMYRMA CAROLI Forel. 



Honduras: San Pedro Sula. 

 In Bull's Horn Acacias. 



PSEUDOMYRMA DISTINCTA F. Smith, variety PULCHELLA Forel. 



Honduras : Tela. 



One worker of this beautiful little species was found on a leaf. 



Subfamily Myemecinae. 



STENAMMA DIVERSUM, new species. 



Worker. — Length, 2.25 mm. 



Head a little longer than broad and slightly narrowed in front, 

 sides in front nearly straight ; occipital corners very broadly rounded ; 

 occipital border shallowly concave. Mandibles thick, their blades 

 with three strong teeth on apical half and three short, blunt teeth on 



