38 
William Morton Wheeler 
robust, 12-jointed; scape not reaching the posterior corner of the head; 
all the funicular joints, except the first and last, distinctly broader 
tlian loDg. Thorax of the usual shape. Petiole as high as the epinotum, 
higher than long and about ld /2 times as broad as long; its anterior 
surface somewhat concave, its upper surface rounded and convex and 
passing through an obtuse angle into the flattened posterior declivity; 
the sides rounded. Gaster of the usual conformation. All the legs 
with pectinated spurs ; middle and hind pairs each also with a pair 
of small simple spurs. Middle tibise and metatarsi short, with numerous 
stout bristles on their extensor surfaces. 
Mandibles coarsely striato-punctate; head, thorax and petiole 
finely and densely punctate; gaster smooth, apparently. 
Hairs long, suberect and scattered, rather uniformly distributed 
on the head, thorax and gaster; shorter, more abundant and appressed 
on the legs. Antennse with only a few short, erect hairs near the 
bases and at the tips of the scapes. 
Dark brown or black; legs somewhat reddish: wings yellowish, 
with brown veins and Stigma. 
This is evidently a true Euponera of the subgenus Trachymesopus, 
on account of the short and bristly middle tibia and metatarsus and 
the character of the spurs on the middle and hind tibise. 
In addition to one of Mayr’s types (No. 640/10 277) I have seen 
eighteen specimens from the Geolog. Inst. Koenigsberg Coli., namely, 
Nos. III B 250, B 5478, B 5064, B 19 074, B 18 632, B 19 093, B 5450, 
B 19 027, B 5222, B 5253, B 18 594 and seven without numbers; and 
three specimens from the Klebs Coli, namely K 1094, X 11 and A 140. 
All the specimens bear wings and all are in amber of such similar 
color and texture, and are in such a uniform state of preservation, 
with more or less of the gaster, usually its tip, enveloped in large 
bubbles or masses of white substance, that I am inclined to believe 
that all came originally from the same locality and even formed part 
of the same nuptial flight. 
Genus JPonera Latreille. 
JPonera atavia Mayr. 
Ponera atavia Mayr, Beitr. Naturk. Preuss. I, 1868, p. 72, Taf. IV, Figs. 66—69 9 cf 
Dalla Torre, Catalog. Hymen. VII, 1893, p. 37; Handlirsch, Foss. 
Insekt. 1908, p. 879. 
Worker (Fig. 9a— c). Length about 3,6 mm. 
Head rectangular, longer than broad, with evenly rounded sides 
and its posterior border feebly but distinctly excised in the middle. 
