98 
William Mouton Wheeler 
Erect hairs very few and widely scattered on the body, short 
and more numerous on the gaster; tibiae and tarsi with a row of 
slanting bristles on their flexor surfaces. Gaster, scapes and legs covered 
with short, dilute pnbescence. 
Color ferruginous red. 
Described from ten specimens. Three of these, K 4305 (type), 
and K 5590, are in the Klebs Coil. K 4305 is very transparent amber 
but is in such a position that parts of the head cannot be seen. The 
block K 5590 contains two workers which are curled up and mucli 
obscured by white films. One of them, however, shows the dorsal 
surface of the head very clearly. The 7 remaining specimens are in 
the Geolog. Inst. Koenigsberg Coli. (XXB 264, B 19509, B 19413, 
XXB 4358, B 19036 and two without numbers). Several of these 
are either in unfavorable positions or more or less clouded but they 
can be nevertheless definitely assigned to this species. 
I have deemed it necessary to establish a new genus for this 
ant, because the shape of the head and thorax, and the absence of 
spurs on the middle and hind tibim remove it from any of the des- 
cribed Dolichoderine genera. The absence of these spurs and the 
abbreviation of the palpi show that it is a highly specialized form 
which became extinct without leaving any descendants to come down 
to recent times. 
Tribe Pityomyrmecini, trib. nov. 
Genus Pityomyrmex , gen. nov. 
Work er. Body slender, with very long legs and antennse. 
Head about as long as broad, nearly as broad in front as behind, 
with straight sides and rounded convex posterior border. Clvpeus 
large, with broadly rounded, entire anterior border. Eyes rather large 
and convex, apparently behind the middle of the sides of the head. 
Ocelli absent. Mandibles inserted far apart at the anterior corners of 
the head, triangulär but very long and slender, their blades full\ T 
4 times as long as broad. The external and apical borders are rather 
straight except at the tip, where both are slightly curved, the apical, 
which is separated from the basal border by a sharp angle, is furnished 
with numerous subequal denticles. Maxillary palpi long, 6-jointed. 
Antennae probably 12-jointed, the funiculus but slightly enlarged at 
the tip, consisting of joints much longer than broad and without 
a differentiated club. Thorax long and narrow, somewhat resembling 
that of Paraneuretus ; the pro-, meso- and epinotum seen from above 
subequal, the pro- and epinotum both convex, especially the latter, 
