The Ants of the Baltic Amber. 7l 



figured to show the peculiar, umbilicate punctures covering the head 

 and thorax. These punctures, however, are somewhat too large in 

 the figure. Mayr's description is, on the whole, very accurate and 

 enables one to recognize the species easily. The antennae are 10-jointed, 

 the eyes a little in front of the middle of the head, the petiole is not 

 pedunculate in front and the femora and tibiae are distinctly incras- 

 sated, the middle and hind pairs of the latter being without spurs. 

 The hairs are absent on the legs, but long, suberect and moderately 

 abundant on the head, thorax, pedicel, gaster and anterior surfaces of 

 the antennal scapes. The funiculi are pubescent. Tlie gaster is 

 apparently opaque and shagreened or finely punctate, with larger, 

 more scattered, piligerous punctures. All the specimens are reddish 

 brown. Length about 2,6 mm. 



Genus Enneamerus Mayr. 

 Enneatnerus retimdatiis Mayr (Fig. 30). 



Enneamerus reticulatus Mayr, Beitr, Naturk. Preuss. I, 1868, p. 100, Taf. V, Figs. 102, 

 103, $; Dalla Torre, Catalog. Hymen. VII, 1893, p. 78; Handlirsch, 

 Tert. Insekt. 1908, p. 873. 



I have seen ten specimens of this peculiar 

 little ant with 9-jointed antennae, five in the 

 Klebs collection (K 4248, with two specimens 

 in the same block of amber, K 1698, K 1682, 

 and K 820) and five in the Geolog. Inst. 

 Koenigsberg Coll. (B 18306, B 18227, B 18179, 

 1003 14362 and one without a number). It -p. 



resembles the members of the paleotropical Enneamerus reticulatus 

 genera Myrmicaria and Pristomyrmex in form Mayr. Worker, K 820. 

 and sculpture, but the worker of Myrmicaria 



has only seven and Pristomyrmex has eleven antennal joints. The 

 resemblance to Myrmicaria was noted by Mayr, who has described 

 the species sufficiently. 



Sub family Dolichoderinfe* 



Tribe Aneuretini Emery. 



Protaneurettis gen. nov. 



Worker. Allied to Aneuretus Emery. Head somewhat longer 



than broad, somewhat narrower in front than behind, with rather 



convex sides. Eyes moderately large and convex, near the middle of 



the sides of the head. Ocelli absent. Mandibles triangular, well-developed, 



