The Ants of the Baltic Amber. 
53 
as broad. The mesoepinotal constriction is feeble and the shape of the 
pedicel, gaster and legs seems to be much as in beyrichi, jndging from 
the description. The femora, too, are strongly clavate, and the middle 
and hind tibise probably have no spurs. That this species cannot be placed 
in the West Indian genns Macromischa, as at present defined, is certain. 
I have placed it provisionally in Vollenhovia, notwithstanding its 
11-jointed antennse. This character would carry it into the genus 
Podomyrma, but the thorax is too simple and too unlike that of any 
of the living species of this gronp with which I am acqnainted. 
Genns Stenamma Mayr. 
Stenamma berendti (Mayr). 
Aphcenogaster berendti Mayr, Beitr. Naturk. Preuss. I, 1868, p. 82, Tat. IV, Figs. 78 
79, cf; Dalla Torre, Catalog. Hymen. VII, 1893, p. 100; Handlirsch, 
Foss. Insekt., 1908, p. 874. 
Mayr described this species from a single male specimen in the 
Berendt Coli. I have fonnd another male, which agrees very closely 
with his description, in the Geolog. Inst. Koenigsberg Coli, (no number). 
The small size of these specimens (2,2 — 2,5 mm) and their venation 
show that they belong to the genns Stenamma and not to Aphceno- 
gaster. Mayr snpposed the venation of his specimen to be anomalons, 
bnt we now know that a single cnbital cell is characteristic of Stenamma, 
whereas Aphcenogaster has two cubital cells. Curiously enough, the 
venation of S. berendti is like that of our North American S. brevicorne 
Mayr and not like that of the Enropean S. westwoodi Westw., in that 
the posterior brauch of the cnbital vein comes off near the middle 
of the cnbital cell and not from the base of the radial cell. Mayr 
describes the Mayrian furrows of the thorax as absent in S. berendti, 
bnt in the specimen before me they are present, thongh not very deep. 
In Mayr’s Fig. 78 the eyes are too small. The body of the specimen 
from the Geolog. Inst. Koenigsberg Coli, is black, the legs and gaster 
are brownish, the wings are pale brown with concolorons veins. 
Genns Aphcenogaster Mayr. 
Aphcenogaster sommerfeldti Mayr, (Fig. 18.) 
Aphcenogaster sommerfeldti Mayr, Beitr. Naturk. Preuss. I, 1868, p. 81, Taf. IV, 
Figs. 76, 77 5 ? Dalla Torre, Catalog. Hymen. VII, 1893, p. 104; 
Ern. Andre, Bull. Soc. Zool. France, XX, 1895, p. 82; Handlirsch, 
Foss. Insekt. 1908, p. 874. 
This species, as Mayr observed, is allied to the recent Aphceno- 
gaster subterranea of the warmer portions of Europe. It resembles 
