The Ants of the Baltic Amber. 
33 
thorax, tliough without traces of wing-insertions. The pro- and me- 
sonotum and the scutellum are coarsely and umbilicately punctate like 
the head, and the basal portion of the first gastric segment is covered 
with coarse, sparse punctures in addition to the general fine and dense 
punctnation of the surface. 
As Mayr pointed out, the genus Bradoponera is allied to Proceratiiim. 
It is still rhore closely related to Discothyrea, of which five species 
are known: D testacea Roger of North America, antarctica Emery of 
New Zealand and clavicornis Emery of German New Guinea, globus 
Forel of Java and oculata Emery of Kamerun. 
In this genus, liowever, the antennse of the worker are 9- instead 
of 12-jointed, the eyes are minute and the frontal carinse, clypeus 
and petiole have a different confoimation. These differences show 
that Bradoponera is much more primitive than any of the recent 
genera of Proceratini. The workers of all of these genera, moreover, 
are hypogseic in their habits, whereas B. meieri was, in all probability, 
an epigseic or even arboreal species. 
Tribe Ectatommini Emery. 
Genus JEctatomma J. Smith. 
Ectajtomma (Rhyti(loponera) europceum Mayr. 
Ectatomma europceum Mayr, Beitr. Naturk. Preuss. I, 1868, p. 76, Taf. IV, Figs. 72, 
73, $; Dalla Torre, Catalog. Hymen. VII, 1893, p. 24; Handlirsch, 
Foss. Insekt. 1908, p. 879. 
Male (Fig. 5). Length 3,5 — 3,75 mm. 
Head, including the mandibles longer than broad, with very large 
and prominent eyes and ocelli. Mandibles well-developed. Clypeus 
convex, with entire, subangular anterior border. Antennse very long 
and slender, 13-jointed; scape more than twice as long as broad, first 
funicular joint half as long as the scape, remaining joints cylindrical, 
subequal, seven or eight times as long as broad. Mesonotum with 
well-marked Mayrian furrows. Epinotum in profile with subequal 
base and declivity forming an obtuse angle with each other. Petiole 
nearly twice as long as high; its node low and rounded posteriorly. 
First gastric segment with a small protuberance on its anteroventral 
margin. Genital appendages and pygidium short and rounded. Legs 
slender. Wings large and broad. 
Head, gaster and much of the thoracic dorsum and petiole covered 
with a white air-film so that the sculpture cannot be clearly seen. 
Schriften d. Physikal. -Ökonom. Gesellschaft. Jahrgang LV. 3 
