The Ants of the Baltic Amber. 
41 
confined to the Old World tropics. The ocelli had already disappeared 
in the workers of three of the Baltic species, and four of the species 
are very closely related to the slender, black, recent forms of India, 
Africa and Madagascar. 
Sima klebst, sp. nov. 
Worker (Fig. 10). Length 8,5 mm. 
Head somewhat longer than broad, elliptical, with rounded sides 
and feebly excised posterior border. Eyes flat, in the middle of the 
sides of the head. Ocelli present. Mandibles convex, 5-toothed, with 
their masticatory border broader than the base. Clypeus short, obtusely 
bidentate. Antennse small; scapes reaching backward only to the 
middle of the head; first funicular joint as long as the two succeeding 
joints together; joints 3 — 6 broader than long, remaining joints as 
broad as long. Pro- and mesonotum somewhat broader than long, 
flattened above; mesoepinotal constriction distinct. Epinotum longer 
than broad, feebly rounded above and behind. Petiole longer than 
broad, laterally compressed, distinctly pedunculate, with evenly rounded 
node and concave lower surface. Postpetiole apparently longer than 
broad, pedunculate, its convex upper surface rather suddenly declivous 
