PSYCHE 
VOL. XXXIII. AUGUST-OCTOBER Nos. 4-5 
SOME NEW NEOTROPICAL ANTS 
By W. M. Mann 
U. S. National Museum, Washington, D. C. 
Descriptions of the new species given in the following paper 
are presented at this time so their names may be used in con- 
nection with new species of myrmecophilous beetles. One in- 
teresting new form, which has been collected from the stomach 
of a toad by members of the Bureau of Biological Survey, is also 
included. 
Eciton gracellae, new species. 
Worker . — Length 2.75-4 mm. 
Head a little longer than broad, broadest in front of middle, 
sides moderately convex, posterior corners narrowly rounded, 
border shallowly concave. Eyes very distinct, situated a little 
behind the middle of front of sides. Mandibular blades finely 
and bluntly denticulate. Antennal scapes extending a little 
beyond the eyes, all funicular joints longer than broad. Thorax 
rather slender, in profile evenly convex. Epinotum on a lower 
plane than the promesonotum, its surface shallowly impressed 
at basal half, very feebly convex behind, twice as long as broad 
and one and one half times as long as the declivity, into which it 
very broadly rounds. Petiole in profile a little longer than high, 
convex above, with the antero-ventral spine strong, elongate, 
curved and acute at apex, extending backward; from above 
longer than broad, with feebly convex sides, postpetiole in 
profile as long as high and convex above; from above a little 
longer than broad, with nearly straight sides. Legs long, rather 
slender, claws simple. 
