486 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Hairs yellowish; those on the upper surface of the body very long, 
slightly curved, of uniform thickness and blunt, arranged very regu- 
larly in pairs. On the head nearly all of them arise from the edges 
of the frontal carinae where the insertion of each hair is a minute 
tubercle; on the thorax the hairs are inserted along the ridges connect- 
ing the humeral angles with the epinotal spines. The petiole bears 
three, the postpetiole two pairs of these peculiar pairs. On the gaster 
there are four regular equidistant rows, with about six hairs in each 
Fic. 1.— Blepharidatta brasiliensis, sp. nov. a, worker, lateral view; 6, head of 
same from above; c, mandibles, clypeus and antenna of same from the front. 
row. Each fore coxa bears a single long hair and there is a pair of hairs 
on the gula. Legs, antennae, and terminal gastric segments with 
numerous, short, appressed pointed hairs and the dorsal surface of 
the gaster also with a few scattered reclinate hairs. 
Color ferruginous; antennae, legs, tip and sides of gaster somewhat 
paler and more yellowish. 
Described from ten specimens; Cotype M. C. Z. 9040. 
This extraordinary ant is evidently to be placed in the tribe Attiini, 
