256 Annals of the South African Museum. 



Bulawayo. Two 1/ 1/ and about three dozen $ $ were taken in a 

 rotten beech-nut in the ground. On another occasion one 1/ and half 

 a dozen £ ty were found in a decaying grain of maize. Also taken 

 running under a stone. I have also received specimens from Durban 

 (Marley and Cooper), which do not differ from this race except in the 

 carinae on the clypeus being a little more distinct and a little closer 

 together posteriorly. 



(S.A.M., K.M., G-.A. colls.) 



Genus AEROMYRMA, Forel. 

 Grandidier's Hist. Madagascar, 20, p. 198, 1891. 



Characters 



Strongly dimorphic. 



1/. Antennae 10-jointed ; club 2-jointed. Head much longer than 

 wide ; sometimes with a small tooth on each side above. Mandibles 

 with about 6 teeth. Eyes small; composed of a single facet. Thoracic 

 sutures distinct. Epinotum dentate or unarmed. Abdomen long, 

 longer than the rest of the body. 



$ . Head not much longer than wide. Abdomen of the usual 

 shape ; not longer than the rest of the body. Otherwise like the 1/ . 

 This genus contains three species, one of which is found in Madagascar. 



A. African a, Eorel. 



Schultze's Reise Siidafrika, vol. 4, p. 15, 1/, 1910. 



"1/. 2 - 7-2 - 9 mm. Mandibles smooth and shining, with about 

 6 teeth. Clypeus very short, arched, without emargination, not 

 truncate, with only a small impression in front in the middle, hardly 

 produced backwards between the frontal carinae. Frontal area, 

 triangular ; frontal carinae very short, hardly divergent, not far apart, 

 without lobes. Head large, rectangular, quite one-quarter longer than 

 wide, the sides hardly convex in front and behind, with a small tooth 

 or horn at about the outer fourth of the width of the head, like that 

 of Oligomyrmex corniger, Eorel, but somewhat smaller. The margin of 

 the head behind, between the two teeth, is concave. The exceedingly 

 small eye is composed of a single facet, and is placed within the 

 anterior third of the head. The scape of the 10-jointed antenna 

 hardly extends beyond the middle of the head. Last joint of flagellum. 

 quite three times as long as the preceding joint. The pronotum is 

 strongly convex, and steep in front. . . . Thorax with both sutures 

 distinct, but not in the least constricted, shoi't and wide. Epinotum 



