1926] 
Some New Neotropical Ants 
101 
Described from a female found with a cluster of workers 
beneath a stone on the edge of the Barranca de Oblatos at Guada- 
lajara, Jalisco, Mexico. 
Alfaria bufonis, new species. 
Worker . — Length 5 mm. 
Head one fourth longer than broad, as broad behind as in 
front, sides feebly convex, occipital corners broadly rounded, 
border shallowly concave. Clypeus slightly convex, broadly 
rounded at anterior border. Frontal area very distinct, the 
surface immediately in front strongly, transversely impressed. 
Antennal scapes slender basally, clavate toward apex, surpassing 
occipital corners by a distance nearly equal to their width at tip. 
Eyes small, round, convex, situated at middle of sides of head. 
Promesonotum widest in front of middle, sides very feebly 
rounded, surface slightly convex; inferior corners obtusely an- 
gulate. Epinotum separated from mesonotum by a distinct 
though narrow transverse groove, its basal surface on a lower 
plane than the mesonotum, as long as the declivity, broadened 
behind; slightly convex in profile. Petiolar node in profile longer 
than high, convex above, with a sloping anterior face; from above 
longer than broad, with sides rounded behind and nearly straight 
in front. Gaster similar to that of Alfaria simulans Emery. 
Subopaque. Head, thorax and abdomen with coarse, irregu- 
lar punctures, approximate and with the surface between appear- 
ing as a reticulum on the head and especially the pronotum, less 
approximate on dorsal surface of petiole and abdomen and widely 
separated on metapleurse, the entire surface with a silk-like 
sheen; front of head at middle with a subtlely striate area; 
frontal lobes and mandibles rather coarsely striate; antennal 
scapes and legs with distinct, separated shallow punctures and 
dense microscopic striolse. 
Fine and silky, yellowish hairs moderately abundant on 
head, body and appendages. 
Dark brown to black, with a red-brown tinge, mandibles 
and appendages lighter. 
Type locality. — Choapam, Oaxaca, Mexico. 
Type.— Cat. No. 29047 U. S. N. M. 
