132 William Morton Wheeler 



its median transverse diameter. Ocelli present, small flattened. Man- 

 dibles rather small, triangular, with about 7 small, subequal teeth on 

 the straight apical borders. Maxillary palpi rather long, 6-jointed; 

 labial palpi short, 4-jointed. Clypeus rather large, ecarinate, its sur- 

 face flush with that of the head and eyes, its anterior border entire, 

 not projecting. Frontal area triangular; frontal groove distinct only 

 in front, obsolete behind. Frontal carinas very short and low, rather 

 straight, rapidly diverging behind. Antennal insertions just behind 

 the posterior border of the clypeus which does not project back 

 between them. Antennal and clypeal fovese very feebly developed, 

 apparently confluent. Antennae slender, 12-jointed; funicular joints 

 all longer than broad, not incrassated nor forming a club towards 

 the tip of the appendage. Thorax short, thickset, with distinct pro- 

 mesonotal and mesoepinotal sutures and distinctly constricted at the 

 latter, broadest through the pronotum which with the mesonotum 

 forms a single hemispherical mass, and surrounds and encloses the 

 semicircular mesonotum in front and on the sides. Epinotum smaller 

 and lower, as broad as long, moderately convex, but without distinct 

 base and declivity. Petiole surmounted by a low, blunt, transverse 

 scale. Gaster rather large, elliptical. Legs rather stout, their tibiae 

 with simple claws, their middle and hind tibiae with simple, non- 

 pectinated spurs. 



GlaphyroTnyrniex oligocenicuSf sp. no v. 



Worker (Fig. 63.) Length about 5 mm. 



Head very regularly elliptical, a little longer than broad. An- 

 tennal scapes straight, scarcely thicker at the tips than at their bases, 

 reaching a little beyond the posterior border of the head; joints 1 — 6 

 of the funiculi fully twice as long as broad; joints 8 — 10 only l^/g 

 times as long as broad. Petiole from above transversely elliptical, 

 somewhat more than twice as broad as long; in profile the 

 node is thick, low and rounded, with the posterior surface slightly 

 flattened. 



Body shining throughout, mandibles densely and finely striated, 

 remainder of body beautifully shagreened, the thorax more sharpl^^ 

 and finely than the head and gaster. Clypeus, cheeks and sides of 

 pronotum with a few scattered punctures. 



Hairs very sparse, erect, short and stiff, present only on the 

 clypeus, tips of antennal scapes, vertex and gaster. Flexor surfaces 



