1921] Wheeler: Tachigalia Ants 151 



10. — Crematogaster (Orthocrema) limata F. Smith 

 var. palans Forel. 



A single colony with two dealated females, of what I take to 

 be this variety, was found August 6, nesting in a small Tachigalia 

 petiole at Kartabo. The workers are smaller than those of the 

 typical limata, possibly because the colony was young. The anten- 

 nal scapes are longer than in the type from Panama, but Forel 

 mentions specimens from Para Brazil, with longer antennae. 



The female measures nearly 6 mm. and is very deep brown, 

 almost black, with the mandibles, legs and antennal clubs yellow- 

 ish brown, the femora and tibiae somewhat infuscated in the 

 middle. Head subrectangular, broader than long, nearly as broad 

 in front as behind, with straight, subparallel cheeks as long as 

 the eyes. Antennal scapes extending a short distance beyond 

 the posterior corners of the head. Thorax a little more than 

 twice as long as broad ; slightly narrower than the head, elongate 

 elliptical from above, the nearly vertical epinotum with a pair of 

 slender, pointed spines, longer than broad at their bases. Petiole 

 subelliptical, truncated behind, its posterior corners distinctly 

 angular ; in profile twice as long as high, with nearly flat dorsal 

 surface and a small tooth at the anteroventral margin. Post- 

 petiole as broad as the petiole, somewhat depressed above, trun- 

 cated behind. Gaster rather large, convex on the sides and 

 above, pointed behind and emarginate anteriorly. Legs moder- 

 ately slender. Surface of body very smooth and shining. Mand- 

 ibles smooth, with a few small, scattered, piligerous punctures. 

 Cheeks, sides of front, sides and declivity of epinotum longitud- 

 inally striate; mesonotum with coarse, scattered, piligerous 

 punctures, the punctures on the gaster quite as sparse, but 

 smaller. Hairs golden yellow, moderately abundant, erect, of un- 

 even length, most numerous on the head, well-developed on the 

 scapes and legs. 



12. — Crematogaster {Orthocrevia) limata F. Smith subsp 



ludio Forel. 



Two colonies with dealated females, taken August 10 and 

 September 3 from petioles of young Tachigalias on the Cuyuni 

 trail at Kartabo. The workers agree well with Forel's descrip- 



