WHEELER, NORTH AMERICAN ANTS 349 



Female. Length, 6.5-8.5 mm. 



Resembling the worker major, especially in the shape of the head. Thorax 

 robust and flattened dorsally. Petiole broader and more compressed than in 

 the worker major, its apical mai'gin sharper and with a rather deep and broad 

 median notch. Hairs much shorter and less glistening than in the worker, 

 though abundant and erect. Wings rather short (7 mm.) ; almost colorless, 

 with pale yellow veins and dark brown stigma. 



Male. Length, 4.5-5 mm. 



Head slightly longer than broad, with large eyes and ocelli, its posterior 

 border broadly rounded ; cheeks subparallel, straight, somewhat shorter than 

 the eyes. Clypeus convex, bluntly carinate, with somewhat projecting, rounded 

 and entire anterior margin. Mandibles edentate. Antennae very slender, first 

 funicular joint swollen, longer than the second. Thorax robust, with convex, 

 rounded epinotum. without distinct basal and declivous surfaces. Petiole low, 

 thick and transverse, with rather sharp, entire dorsal border. Gaster and legs 

 of the usual conformation. 



Whole body subopaque. finely shagreened or punctate. 



Pilosity much as in the worker minor, but less abundant. Scapes naked. 

 Cheeks with a few blunt, erect hairs. Hairs on legs short, subappressed. 

 longest and most conspicuous on the gaster. Pubescence apparently absent. 



Black ; mandibles, mouthparts, tarsi, genitalia and articulations of legs and 

 thorax bi-ownish. Wings like those of the female, but with even paler veins. 



Described from nnmeroiis specimens of all four phases taken in the 

 following localities : 



Florida: Miami, Card's Point and Planter, Key Largo (Wheeler). 



Texas: Esperanza Eanch, Brownsville (C. Schaeffer). 



This tropical species is widely distributed through Central America, 

 Mexico and Cuba, but enters the United States only at the two points 

 mentioned above, namely, at the southern extremit}^ of Florida and at 

 the mouth of the Eio Grande del Forte. Like the other species of tbe 

 senex group, it forms rather small colonies and is exquisitely arboreal in 

 its habits. On Key Largo and at Card's Point, I foimd it nesting in 

 epiphytic Tillandsias in mangrove thickets : at Miami I saw a fine colony 

 nesting under a piece of loose bark on the trunk of a living tree. 



VL Novogranadensis Group 

 52. Camponotus bruesi sp. nov. 



Worker major. Length, about 6 mm. 



Head rather small, subrectangular, a little broader behind than in front, 

 with feebly excised posterior border and slightly convex sides ; anterior corners 

 lobular and rounded, slightly reflected. In profile the head is obliquely trun- 

 cated anteriorly, but the truncated surface has rounded lateral borders. Eyes 

 rather large, slightly convex. Clypeus flattened, about one-third again as long 



