The Ants of the Baltic Amber. 
31 
Black; the chitin of the body more or less decomposed. Wings 
dark brown. 
Described from one rather poor worker specimen from the Klebs 
Coli., K 5793, which, however, shows very clearly the palpi and the 
sculpture of the sides of the body, three good worker specimen s from 
the collection of the Geolog. Inst. Koenigsberg, No. IV, 7, 8094/702, 
and two without numbers. One of the latter (the ergatotype) is the 
largest of the series and has ocelli and the promesonotal ridge described 
above; the other lacks the head. The numbered specimen also has 
ocelli. We may infer, therefore, that in this primitive genus there 
was a tendency to produce ergatoid females like those we find today 
in various species of Cerapachys ( C. peringueyi) and Sphinctomyrmex 
(S. hedwigce). The series comprises two males, B 5471 and II B 225, 
both in the collection of the Geol. Inst.; the former very poor, the 
latter (androtype) beantifully preserved and represented in Fig. 2 c. 
Procerapachys favosus, sp. nov. 
Worker (Fig. 3). Length 6 mm. 
Closely resembling the preceding species in form but differing 
in sculpture. The head, thorax, petiole and postpetiole are coarsely 
reticulate-rugose, the head and postpetiole less sharply and distinctly than 
Fig. 3. Procerapachys favosus sp. nov. Worker, B 18239. 
the thorax and petiole, and in addition finely and densely punctate. 
On the thorax the sculpture stops behind at a ridge bordering' the 
smooth and abrupt declivity of the epinotum and anteriorly at the 
transverse pronotal ridge. The neck is smooth and shining, at least 
in the mid-dorsal region. The sculpture of the gaster cannot- be 
determined as the segments are obscured by small bubbles and a white 
film. Ocelli are present. The sides of the thorax and petiole are 
flatter than in annosus, but the shape of the head, antennae and legs, 
