A Monograph of the Formicidae of South Africa. 687 



C. eugeniae, Forel. 

 Bull. Soc. Vaud. Sc. Nat., vol. 16, p. 78, «, 1879. 



21, 11-12 mm. Very similar to Petersi but smaller, differing from it 

 only as follows : — 



Head relatively shorter and wider, more shallowly emarginate 

 behind. Excepting a few yellowish hairs on the apical margins of 

 the abdominal segments and on the anterior margin of the clypeus, 

 the pilosity is entirely black, and much more abundant, especially on 

 the clypeus, pronotum and mesonotum. The cheeks have a few 

 exserted pilose hairs in front, in addition to the decumbent pubescence. 

 Mandibles ferruginous. Metanotum much shorter. The scale of the 

 petiole shorter, the anterior face less oblique in its upper half. The 

 extreme apical margins of the abdominal segments flavous. The 

 tibiae densely pilose as in Petersi. The sculpture is finer all over, 

 and the petiole is merely rugulose or shagreened, not reticulate as 

 in the other species. 



y minor, 9 mm. Pilosity, pubescence and sculpture like that of 

 the 21. It differs from the £ minor of Petersi chiefly in the shape of 

 the head, which is much shorter in proportion to its length, barely 

 one-third longer than wide, semicircular behind the eyes, the sides 

 in front of the latter feebly convex and moderately convergent 

 anteriorly. Mandibles shorter, ferruginous. 



$, (hitherto undescribed), 16 mm. Very similar to the $ of Petersi, 

 but with the head relatively shorter and wider behind, the thorax 

 narrower, the whole body covered with an exceedingly fine and 

 pruinose pubescence which is most abundant on the abdomen. 

 Sculpture of head and thorax finer. Abdomen reticulate-rugulose, 

 not merely rugulose as in Petersi. Wings subhyaline, tinged with 

 yellow only near the nervures, which are yellowish brown, the stigma 

 pale brown. 



cJ, (hitherto undescribed), 8-5 mm. Black ; mandibles and clypeus 

 reddish brown, flagellum and tarsi dark brown, scape brownish 

 ochreous. Abdomen, petiole and epinotum slightly shining, the rest 

 dull, (entirely in Petersi). Like Petersi, but the sides of the head 

 behind the eyes are more convex, the posterior margin narrower, not 

 as wide as the anterior. Declivity of epinotum oblique, not clearly 

 delimited from the dorsum. The anterior face of the petiole more 

 oblique, almost dorsal in position, nearly as long as wide, (wider than 

 long in Petersi). Wings hyaline, nervures pale ochreous, stigma 

 brownish yellow. Otherwise like the $ of Petersi. 



