308 bulletin: museum of comparative zoology. 



impressed border; transverse impression of vertex strong. Mandibles stout, 

 bluntly dentate apically; outer border a little concave in front of middle. 

 Clypeus flat, its borders poorly defined, carinate, concave at middle of anterior 

 border. Frontal area deeply impressed. Frontal carinae divergent, as long 

 as the scape and bordering a moderately well-defined scrobe. Antennal 

 scapes extending a little more than half the distance to occipital corners. 

 Club slender, funicular joints longer than broad. Eyes small and convex, 

 situated a little in front of anterior third of sides. 



Promesonotum convex. Pronotmn with a pair of spines pointing upward 

 and outward, about two thirds as long as width of pronotum, thick basally and 

 acuminate at tips. Mesonotum transversely ridged and with two small 

 denticles. Epinotum with a narrow margin between basal and declivous 

 surfaces; both surfaces concave; spines twice as long as their distance apart 

 at base, only slightly divergent and curving a little backward, angulately 

 denticulate at anterior third. Petiolar node with flat anterior and concave 

 and margined posterior surfaces; impressed at upper border, sides elevated 

 and bluntly triangular. Postpetiole a little broader than long; broadest in 

 front, with rather prominent, bluntly angulate anterior corners. 



Moderately shining, except gaster, which is subopaque. Mandibles shining, 

 with coarse scattered punctures. Sides of clypeus striate. Head with coarse 

 ii'regular striae extending as far as tips of scapes, intervening spaces rugulose, 

 vertex, occiput, pronotum, and mesonotum very coarsely rugose-striate. 

 Scrobe granulose. Base of epinotum finely and transversely striate. Post- 

 petiole with broad, longitudinal sulci. First gastric segment very densely 

 striate and punctate tlu-oughout; granulose basally; second and third seg- 

 ments densely punctate. Legs smooth and shining. 



Scattered, erect, yellow hairs present on head, body, and appendages. 



Color brownish red, mandibles red. Legs yellow. 



Worker. Length 2 mm. 



Head as long as broad, rounded at sides and behind. Mandibles 7-dentate . 

 Clypeus flat, broadly rounded anteriorly. Antennal scapes surpassing occipi- 

 tal corners by more than one fourth their length; funicular joints two to seven 

 about as broad as long. Pronotum flat, pronotal spines slender, as long as 

 their distance apart at base, directed forward and outward and slightly curved 

 downward. Epinotum concave between the spines, which are twice as long 

 as distant apart at base, erect and rather strongly curved backward. Petiole 

 four times as long as broad; node feebly margined in front and sides. Post- 

 petiole longer than broad, broadest behind, with slightly convex sides. 



Mandibles shining. Head subopaque, granulosely punctate with a few 

 fine longitudinal striae on front and cheeks. Promesonotum punctate simi- 

 larly to head, but more shallowly, with striae more abundant and more shining. 

 Epinotum subtly punctate and shining. Petiole, postpetiole, gaster, and legs 

 shining. 



