70 William Morton Wheeler 



ally widening posteriorly, where it projects above in the form of 

 a prominent node distinct from the peduncle. Postpetiole somewhat 

 broader than the petiole and slightly broader than long, with rounded 

 sides and dorsal surface. 



Head between the carinse regularly and coarsely longitudinally 

 rugose, the occipital region coarsely and indistinctly reticulate-rugose. 

 The sculpture of the thorax and pedicel cannot be determined. The 

 disk of the pronotum and the sides of the petiole and postpetiole seem 

 to be longitudinally rugose. The gaster and legs are smooth. 



Hairs long and slender, sparse on the head and thorax, more 

 abundant on the gaster, shorter on the femora and tibiae. 



Black, much of the gaster yellowish and decomposed. 



Described from a single specimen (a 74) in the Klebs Coll. The 

 amber is cloudy and full of small cracks and the clypeus, mouth parts 

 and tip of the gaster are enveloped in a dense white substance so 

 that the details of their structure cannot be clearly seen. The paleotrop- 

 ical genera Meranoplus and Triglyphothrix seem to comprise the nearest 

 living allies of this insect, but more and better material will be 

 required to establish its true position. 



Genus Stigtriomi/rmex Mayr. 

 Stigmomyrmeoc vennstus Maye (Fig. 29). 



Sligmomyrmex venustus Mayk, Beitr. Naturk. Preuss. I, 1868, p. 97, Taf. V, Figs. 99, 

 100, $; Dalla Torre, Catalog. Hymen. VII, 1893, p. 78; Ern. Andre, 

 Bull. Soc. Zool. France, XX, 1895, p. 82; Handlirsch, Foss. Insekt. 

 1908, p. 873. 



I have seen four worker specimens of this species in the Geolog. 

 Inst. Koenigsberg Coll., namely, No. 5/20 (Mayr's type), XX B 1294, 



Fig. 29. Stigmomyrmex venustus Mayr. Worker, B 1407. 



B 18921 and XX B 1407. Of these the last is in a fine state of 

 preservation in a very clear block of amber. This specimen I have 



