The Ants of the Baltic Amber. 
51 
Tribe Myrmicini Emery. 
Genus Vollenhovia Mayr. 
Vollenhovia beyrichi (Mayr). 
Macromischa beyrichi Mayr, Beitr. Naturk. Preuss. I, 1868, p. 84, Figs. 80, 81 $; 
Propodomyrma samlandica Wheeler, Ants, Their Structure etc.. 1910, p. 163, Fig. 93$. 
Worker (Fig. 17). Length 4 mm. 
Head, excluding the mandibles, but little longer than broad, 
subrectangular, with straight posterior border and rather straight sides. 
Eyes moderately large, somewhat flattened, near the micldle of the 
sides. Mandibles 5-toothed; the two apical 
teeth largest; basal tooth prominent. Cly- 
peus short and broad, convex in the middle, 
depressed on the sides, its anterior border 
with a faint but distinct median sinuosity. 
Antennal fovese large. Frontal area small, 
triangulär. Frontal carinse short. Antennse 
rather stout, 12-jointed; scapes not reaching 
to the posterior corners of the head; funi- 
culus terminating in a 3-jointed club which 
is distinctly shorter than the remainder of 
the funiculus; first funicular joint as long 
as the two succeeding joints together; joints 
2 — 7 broader than long, joint 8 as long as 
broad, terminal joint as long as the two pre- 
ceding subequal joints of the club. Thorax 
stout, somewhat narrower behmd than in front; pronotum with 
prominent transverse anterior portion rising abruptly above the neck; 
lmmeri prominent tliough rounded. Mesoepinotal constriction faint, 
especially on the dorsal side, so that the surface of the mesonotum 
and base of the epinotum in profile form a nearly continuous hori- 
zontal line. Epinotum armed with two teeth which are longer than 
Broad at their bases, as long as far apart, somewhat blunted at their tips 
and directed backward and slightly outward and upward. Epinotal base 
and declivity subequal, meeting at nearly a right angle, the declivity 
concave, the metasternal angle rounded. Petiole from above twice as 
long as broad, with subparallel sides, a little narrower in front than 
behind, in profile with a short peduncle and a prominent anteromedian 
ventral tooth; node rather high and angular, with subequal anterior 
and posterior slopes, the former concave, the latter convex above and 
concave near the border of the postpetiole. Postpetiole a little broader 
4 * 
Fig. 17. Vollenhovia beyrichi 
Mayr. Worker, K 904. 
