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 tibige. 
Black, much of the gaster yellowish and decomposed. 
Described from a single specimen (a 74) in the Klebs Coli. 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 Stigmomyrmex Mayr. 
Stigmomyrmex venustus Mayr (Fig. 29). 
Stigmomyrmex venustus Mayr, Beitr. Naturk. Preuss. I, 1868, p. 97, Taf. Y, 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 Coli., 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 
