The Ants of the Baltic Amber. 127 



the flexor surfaces of the tibiae and metatarsi and a number of short, stiff 

 hairs at the tips of the femora and scapes. The body is coarsely 

 shagreened and finely punctate and was probably opaque or subopaque 

 in life, the mandibles are striatopunctate. The color is black as seen 

 through silvery air -films. 



Described from two specimens in the Klebs Coll. (a 229 and 

 K 1673). There can be no doubt that these represent a species quite 

 distinct from F. flori, one which belongs to the rufa group and in its 

 pilosity resembling the recent tnincicola Nyl. of Europe, except that 

 the hairs on the body are much longer. Both specimens, and especially 

 « 229, are somewhat decomposed and seem to have lost many of the 

 hairs from the thorax. It must be remembered, however, that certain 

 existing subspecies of F. triincicola, e. g. sinensis Wheeler of Central 

 China and integra Nyl. of North America, show a peculiar absence 

 of the erect hairs on certain portions of the body. 



Formica clymene, sp. nov. 



Worker. Length about 9 mm. 



Allied to F. rufa. Body more robust than in f.ori or even in 

 phaetJwsa, and the head differing in shape, having the posterior border 

 broadly but distinctly excised, with more prominent posterior corners 

 and somewhat flattened vertex, much as in large workers of the 

 recent rufa and sanguinea forms. Clypeus, mandibles and palpi as in 

 j)ha'et}iusa\ antennae shorter, the scapes stouter and extending less than 



1/ 



/g their length beyond the posterior corners of the head; joints 1 — 3 

 of the funiculi slender, twice as long as broad, 4—6 a little longer 

 than broad, the remaining joints, except the last, as broad as long. 

 Eyes rather small and round. Thorax very robust, pro- and mesonotum 

 together not longer than broad, convex and rounded above, the meso- 

 notum circular. Mesoepinotal constriction short and deep. Epinotum 

 short and broad, with subequal base and declivity meeting at a blunt 

 but distinct angle. Petiolar node broad and much compressed antero- 

 posteriorly, with convex anterior and flattened posterior surface, its 

 border very sharp, slightly produced and notched in the middle and 

 abruptly turned backward with a small concavity on the anterior sur- 

 face just in front of the border. Gaster large; legs robust. 



Body and appendages densely shagreened, mandibles densely, 

 head and base of gaster more sparsely punctate. 



Erect hairs absent, except on the tip of the gaster, where they 

 are short and coarse. 



Color black. 



