96 



William Morton Wheeler. 



Dark reddish brown; mandibles, corners of clypeus, antennte, 

 tibiae and tarsi paler and more yellowish. 



Described from two specimens in the Klebs Coll., K 775 (type) 

 and K 1093. The former is broken at the petiole and has the gaster 



Fig. 46. Liometopum oligocenicum sp. nov. Worker. K 775. 



turned upside down. Though in clear amber, the lower surface of the 

 head and thorax and dorsal surface of the gaster are somewhat ob- 

 scured by a white film. The latter specimen is more decomposed. 



There can be no doubt that this species is a true Liometopum, 

 though the thorax is longer, less convex above and with a more dis- 

 tinct mesoepinotal constriction than in any of the recent species. The 

 pubescence is also much shorter than in these forms, but its feebler 

 development may be merely apparent and due to the effect of the 

 medium in which the specimens are embedded. 



Grenus Asymphylofnyrmex gen. nov. 

 Worker. Monomorphic. Body short and thick-set. Head suborbi- 

 cular, slightly flattened anteriorly, with the eyes on its sides, behind 

 the middle. Ocelli present, rather far apart. Clypeus large, convex, 

 with somewhat projecting, sinuately excised anterior border. Frontal 

 area large, triangular. Frontal groove very distinct, extending back 

 to the anterior ocellus. Antennae 12-jointed, their funiculi feebly 

 enlarged towards the tip, without a differentiated club. Mandibles 



