The Ants of the Baltic Amber. 
29 
In one specimen (Fig. 2 a) there is also a transverse ridge separating 
the pro- and mesonotal regions. Petiole narrower than the epinotum, 
distinctly longer than broad, as broad in front as behind, evenly 
rounded on the sides and above, with a flat, abrupt and vertical anterior 
Fig. 2. Procerayachys annosus sp. nov. a) Worker, dorsal view; b) Worker, K 5793, 
lateral view; c) male, TI B 225. 
surface bordered by a ridge like that surrounding the epinotal declivity. 
Postpetiole l 1 ^ times as broad as the petiole, subcampanulate, broader 
behind than in front and scarcely longer than broad. First gastric 
segment somewhat broader than the postpetiole, as long as broad, with 
convex sides and dorsum ; remaining segments very short, convex, and 
taken together much shorter than the first gastric segment. 
