548 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
twice as long as broad. Pronotum large; mesonotum very distinctly 
concave and saddle-shaped in profile, with an obtuse projection in front 
resembling the pommel of a saddle and a feeble posterior thickening 
formed mainly by the two projecting spiracles. Epinotum rather 
broad, with strongly convex basal surface, rising behind the mesono- 
tum and a little longer than the declivity into which it passes insen- 
sibly. Petiole vertical, thick, much thicker than in F. nasuta, as thick 
above as at the base, convex in front, flat behind, with obtuse, rounded 
border, entire and rather transverse when seen from behind. Legs 
very slender. 
Mandibles striatopunctate, rather shining. Body very shining; 
gaster nearly smooth, other portions of the body very feebly sha- 
greened, a little more strongly and densely on the front of the head. 
Front of clypeus with a row of long hairs; remainder of body gla- 
brous, except for one or two small hairs on the head and towards the 
tip of the gaster. Mentum with ammochaetae. Tibiae with one, 
metatarsi with two rows of bristles on their flexor surfaces. Pubes- 
cence very short and very sparse on the appendages, almost nzl on the 
body. 
Black, scarcely tinged with brown. Mandibles, anterior border of 
head, antennae, legs, palpi, and the very narrow posterior border of 
each gastric segment brownish red; coxae and femora darker brown. 
Biskra, Algeria (A. Forel). 
This ant is remarkably like the species of Cataglyphis, especially 
in the structure of the thorax, petiole, and maxillary palpi and in 
possessing ammochaetae on the mentum. According to Forel, its. 
colonies are very small and inhabit little nests the entrances of which 
do not open on craters but are very small round holes in the sand, 
difficult to discover unless one follows up workers that are returning to. 
the nest. 
SuBGENUS NEOFORMICA, subgen. nov. 
132. F. (N.) PALLIDEFULVA PALLIDEFULVA Latreille. 
F. pallidefulva Latreille, Hist. nat. fourm. 1802, p. 174, 8 ; Dalla Torre, Cata- 
log. Hymen., 1893, 7, p. 203; Emery, Zool. jahrb. Syst., 1893, 7, p. 656, 
taf. 22, fig. 16, 8 9 &; Ibid., 1895, 8, p. 335; Wheeler, Bull. Amer.. 
mus. nat. hist., 1904, 20, p. 369. 
WorkKER. Length 4.5-6 mm. 
Body long and slender. Mandibles 8-toothed. Head, excluding 
the mandibles, about 14 times as long as broad, but little narrower 
