476 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
frontal area, more shining. Mandibles densely striated and coarsely 
punctate. Legs and gaster shining, the latter delicately and trans- 
versely shagreened, with the same peculiar luster as in F. truncicola 
obscurwentris. 
Hairs golden yellow, short, obtuse, suberect and very sparse on the 
upper and lower surfaces of the head, thoracic dorsum, and gaster. 
Legs without erect hairs on the extensor surfaces; antennal scapes 
occasionally with a few short hairs on their anterior surfaces. Eyes 
hairless. Pubescence whitish, very short and sparse, visible on the 
antennae, pleurae, and gaster, but not concealing the shining surface 
of the gaster. 
Mandibular teeth and gaster black; remainder of body and appen- 
dages deep red; antennal funiculi, legs, especially the tibiae, mandibles, 
and anterolateral corners of the head, darker and more brownish. 
Ocellar region and mesonotum slightly infuscated even in large 
workers, but there is no increased tendency to infuscation in the 
smaller workers. 
FreMALeE. Length 4-5 mm. 
Mandibles and clypeus like those of the worker, except that the 
latter is more convex and less prominently keeled. Head slender, 
without the mandibles distinctly longer than broad, with long, 
anteriorly converging cheeks. Thorax distinctly narrower than the 
head. Petiole similar to that of worker but with sharper superior 
border, often slightly notched in the middle. Gaster small. Legs 
slender. Wings somewhat longer than the body (5.3 mm.). 
Body smooth and shining, very finely shagreened, posterior portion 
of head and mesonotum more opaque; gaster very glabrous, being 
much more delicately shagreened than in the worker. 
Hairs golden yellow, suberect, slender, pointed, much longer than 
in the worker and more abundant, especially on the upper surface of 
the head and thorax. Legs with rather long, scattered, subappressed 
hairs. There are a few conspicuous erect hairs on the anterior surface 
of the antennal scapes, on the gula and border of the petiole. On the 
gaster the long hairs are sparse and arranged in three regular rows on 
the first and second, in two rows on the succeeding segments. 
Mandibular teeth and gaster black, remainder of body dull yellowish 
red. Antennae, legs, posterior portion of head, mesonotum, scutellum, 
and metanotum decidedly darker. The anteromedian and parapsidal 
blotches are faintly indicated on the mesonotum. Wings rather 
opaque, grayish hyaline, with fuscous veins and black stigma. 
Mate. Length 6.5-7 mm. 
Mandibles pointed, edentulous. Head short, broadest through 
the eyes, which are large. Posterior corners broadly rounded; cheeks 
short, flattened, converging in front. Clypeus carinate in front, 
depressed behind. Thorax just in front of the wings hardly broader 
