120 bulletin: museum of comparative zoology. 



where they are twice as far apart as their distance from the lateral corners of 

 the head. Antennae short and slender, the scapes uniformly bent, slightly 

 flattened though narrow at the base, gradually enlarging towards their tips, 

 which reach the posterior corners of the head; funiculi of very uniform thick- 

 ness throughout, the joints subequal, a little longer than broad, the first and 

 last longer. Thorax much narrower and a little shorter than the head, the 

 pro- and mesonotum together forming a hemispherical mass, with strong 

 mesoepinotal suture, the mesonotum broader than long. Mesoepinotal 

 constriction rather deep and very short; metanotal sclerite distinct, short, and 

 convex; epinotum very small, its base long, flattened, nearly perpendicular, 

 the declivity extremely short and strongly concave. Petiole thick, and very 

 low; from above twice as broad as long and a little narrower in front than 

 behind, in profile truncated anteriorly, posteriorly, and dorsally, the posterior 

 surface higher than the anterior and distinctly impressed in the middle above. 

 Gaster elongate-elliptical, smaller than the head. Legs rather stout, slightly 

 flattened, the fore femora enlarged, the claws well developed. 



Mandibles shining, finely and evenly but not densely punctate; anterior 

 half of head subopaque, densely and finely punctate and minutely and in- 

 distinctly rugulose; remainder of body shining, distinctly shagreened, the 

 gaster transversely, covered with sparse, piligerous punctures. 



Hairs grayish, coarse, erect, of uneven length, longest and moderately abund- 

 ant on the dorsal surface of the head, thorax, petiole, and gaster; absent on 

 the gula; short, even, and oblique on the legs and distal portions of the antennal 

 scapes. Pubescence pale, long, coarse, and sparse, conspicuous on the sides 

 of the head, between the frontal carinae and on the gaster. 



Black; mandibles, cheeks, and clypeus cherry-red; antennal funiculi yellow, 

 except the first and last joint, which are black or piceous like the scapes; 

 tarsi and articulations of the thorax, petiole, and legs brown or reddish. , 



Worker minor. Length 3.5 mm. 



Head subtrapezoidal, as broad' as long, a little narrower in front than behind, 

 with feebly convex sides and posterior border, only moderately and evenly 

 convex above, with the eyes at the posterior third. Mandibles narrow, with 

 oblique, apparently 4-toothed apical and straight lateral borders. Maxillary 

 palpi much longer than in the major worker. Clypeus broader than long, 

 subtrapezoidal, feebly carinate, with nearly straight, entire anterior border. 

 Frontal area obsolete; frontal groove feeble; frontal carinae short, rather 

 straight, strongly diverging behind. Antennae long, the scapes extending 

 about I their length bej-ond the posterior corners of the head; first funicular 

 joint nearly as long as the second and third together, the second distinctly 

 shorter than the third, which like the fourth and fifth is nearly twice as long 

 as broad. Thorax in profile composed of two subequal hemispherical masses, 

 one formed bj' the pro- and mesonotum, the other by the meta- and epinotum, 

 meeting at a short, acute, mesoepinotal incision; the epinotum really without 



