The Ants of the Baltic Amber. QC) 



Tribe Tetramoriini Emery. 



Paratneranoplus, gen. no v. 



Worker. Resembling Meranopliis but more primitive in structure. 

 Head large, subrectangular, somewhat flattened above, convex below, 

 with broadly and deeply excised posterior border and large frontal 

 carinse which are continued back above the eyes as prominent ridges 

 forming the mesial borders of a pair of antennal scrobes which seem 

 to be much shallower than in Meranoplus. Eyes small, near the middle 

 of the sides of the head. Ocelli absent. Frontal area rather large, 

 deeply impressed. Clypeus not visible in the specimen. Mandibles 

 large, apparently bluntly dentate. Antennae 11-jointed, scape curved 

 at the base, funiculus terminating in a 3-jointed club, which is about 

 as long as the remainder of the funiculus. Thorax with pointed 

 humerial angles and flattened upper surface. Promesonotal and 

 mesoepinotal satures distinct. Epinotum armed with two spines. Petiole 

 and postpetiole small, the former distinctly pedunculate, the latter 

 constricted behind. Gaster as large as the head, flattened dorso- 

 ventrally, apparently with very large basal segment. Legs with clavate 

 femora; middle and hind tibiae furnished with simple spurs. 



Paratnefanoplus primcevus sp. nov. 

 Worker (Fig. 28). Length about 4 mm. 

 Antennal scapes reaching to about 2/3 the distance from their 

 bases to the posterior corners of the head; first funicular joint somewhat 

 longer than broad, shorter than the 

 two succeeding joints together; joints 

 2 — 7 a little broader than long, joints 

 8 and 9 as broad as long and toge- 

 ther somewhat shorter than the ter- 

 minal joint. Pronotum marginate in 

 front and apparently with a raised and 

 flattened circular disc on its upper sur- 

 face, mesonotum semicircular, its an- jf 



terior border straight, joining the ^ 



1 c i.1 i. 1 J ■ J. Fig. 28. Parameranoplus primaevus 



posterior edge oi the pronotal disc at " ^rr i %.< 



^ " ^ sp. nov. Worker, « (4. 



the promesonotal suture. Base of 



epinotum short and flat, extending on each side behind into the spines 

 which are flat, pointed, directed backward and curved inward so that 

 they seem to form a crescentic plate. Epinotal declivity abrupt and 

 apparently concave. Petiole about 1^2 times as long as broad, gradn- 



