WHEELER: ANTS OF THE GENUS FORMICA. 451 
Mate. Length 7.7 mm. 
(After Forel). Differs from all the known species, except F. san- 
guinea in its mandibles armed with 5-6 teeth, which are even more 
distinct than in the male sanguinea. The basal half of the mandibles 
is, moreover, very narrow, but the terminal half is enlarged. Clypeus 
carinate, with perfectly entire anterior border, thus distinguishing 
the species from sanguinea. Head very short, more than 14 times as 
broad as long, with very large eyes, occupying ¢ of its sides. Petiole 
with its superior border notched in the middle. In other respects 
like F. sanguinea. The same is true of the thorax. Wings shorter 
than in F. sanguinea, not surpassing the gaster and hyaline through- 
out, with brownish veins and stigma. Color, sculpture, and pilosity 
in other particulars as in F. sanguinea but the legs are brown, the pilos- 
ity is sparser (almost absent except on the lower surface of the gaster), 
and the sculpture and pubescence are a little finer. 
Oasis Satsch-zou in the desert of Gobi (Roborovsky and Kozlov). 
The affinities of this species, which is known from only a single 
male specimen, are not at all clear. Forel evidently believed it to be 
related to F. sanguinea, whereas Emery places it near wralensis. Its 
exact position cannot be determined till the worker and female have 
been discovered. 
43. F. FORELIANA, sp. nov. 
WorkKeER. Length 4-6 mm. 
Mandibles 8-toothed. Head, excluding the mandibles, a little 
longer than broad, a little narrower in front than behind, with straight 
posterior and feebly convex lateral borders. Clypeus strongly 
carinate throughout its length, with broadly rounded, projecting 
anterior border. Frontal carinae very slightly diverging behind, 
nearly parallel. Antennae long and slender, joints 2-4 of the funi- 
culus longer and more slender than joints 8-10. Maxillary palpi 
very long, decidedly longer than in any of the preceding species of the 
rufa group. Thorax rather long, the pro- and mesonotum not very 
convex, the mesoépinotal constriction rather shallow, the epinotum 
with subequal base and declivity, both straight in profile and meeting 
at a pronounced angle. Petiole rather narrow, cuneate in profile, 
with feebly convex anterior and more flattened posterior surface, blunt 
lateral and rather sharp, rounded, superior margin which is either 
entire or very feebly notched in the middle. Legs moderately long 
and slender. 
Body including frontal area opaque, very finely shagreened; man- 
dibles somewhat coarsely striatopunctate. 
Hairs golden yellow, long, slender, erect, sparse; present only on 
