The Ants of the Baltic Amber. 



131 



has no differentiated base and declivity. Mesonotum from above 

 nearly as broad as long. Petiolar scale as high as the epinotum, com- 

 pressed anteroposteriorly, convex in front, flattened behind, with sharp, 

 entire, broadly rounded superior border. Gaster rather large, ellip- 

 tical. Legs stout. 



Fig. 62. Formica strangulata sp. nov. Worker. From the type in the Econ. Soc. ("oil. 



Surface apparently shining, finely shagreened and sparsely punctate. 



Hairs erect, coarse, moderately long and abundant, especially on 

 the gaster and thorax, sparser on the head and confined to the 

 vertex, front and clypeus. Legs and antennal scapes without erect 

 hairs; flexor surfaces of middle and hind tibise with rows of slanting 

 biistles. 



Color black. 



Described from two specimens (without numbers) in the Geolog. 

 Inst. Koenigsberg Coll. Both are much decomposed and partially 

 covered with white films, but the form of the thorax is clearly seen 

 to be very characteristic and unlike that of any other living or extinct 

 species of Formica, owing to the peculiar mesoepinotal strangulation, 

 which is not unlike that of the worker Prenolepis henschei Mayr. 



Glaphyromyrmex, gen. nov. 



Worker. Allied to Formica. Body short and thickset. Head 

 broadly elliptical, without posterior corners. Eyes very large, elliptical, 

 flattened, nearly ^j^ as long as the head and situated a little behind 



