462 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
50. F. DAKOTENSIS Emery. 
F. dakotensis Emery, Zool. jahrb. Syst., 1893, 7, p. 652, taf. 22, fig. 5, 8. 
F. subpolita var. ? specularis Emery, Zool. jahrb. Syst., 1893, 7, p. 663, @ 
(in part). 
Worker. Length 5-6 mm. 
Mandibles 8-toothed. Head, excluding the mandibles, as broad 
as long, a little broader behind than in front, with feebly excised pos- 
terior margin, broadly rounded posterior corners, and convex sides. 
Clypeus convex, sharply carinate, its anterior border not produced, 
broadly rounded. Frontal area triangular, as long as broad; frontal 
carinae strongly diverging. Antennal scapes slender at the base, 
distinctly enlarged at their tips; funicular joints 2-4 a little more 
slender and not much longer than the penultimate joints. Palpi 
very short. Thorax shaped much like that of F. sanguinea, with 
moderately convex pro- and mesonotum, moderately deep mesoépino- 
tal constriction and the epinotum rather angular, with subequal base 
and declivity, the former straight and horizontal in profile, the latter 
slightly concave. Petiole narrow, in profile cuneate, thick below, 
with rather strongly convex anterior, more feebly convex posterior 
surface, and blunt superior margin. Seen from behind it is narrow 
below, but gradually broadening dorsally, with straight sides and hori- 
zontal or feebly and broadly excised superior border, so that it appears 
truncated above. 
Subopaque, very delicately shagreened; mandibles and clypeus 
more shining, the former finely striatopunctate; clypeus very finely 
longitudinally striated. Frontal area smooth and shining. Gaster 
more distinctly shagreened than the body, shining with the same luster 
as in F. truncicola obscuriventris and F. exsectoides. 
Upper surface of head, thorax, and petiole without hairs or with a 
very few scattered yellow hairs. Those on the gaster longer, blunt 
and scattered, apparently deciduous on the upper surface, longer and 
more abundant on the venter. Gula and eyes hairless. Pubescence 
very fine and sparse, scarcely perceptible on the body, more distinct 
on the legs and scapes. 
Light or dark red, funiculi darker, gaster black or very dark brown, 
the base of the first segment not distinctly reddish. 
FEMALE (After Emery). Length 7.5-8 mm. 
Antennae, metanotum, tibiae, tarsi, and whole of gaster brown, first 
gastric segment ferruginous red at the base. The whole insect very 
shining; mesonotum and gaster as smooth as a murror, the latter with 
only a few small punctures which bear the very sparse, short pubes- 
cence; erect hairs rather numerous on the base, tip, and venter of the 
gaster, sparse and very short on the head, thorax, and petiole; lower 
aa eae = 
<2 oe glare. — 
——— Ts 
ha eee Rs OSE eS Oe, SE 
