A Monograph of the Formicidae of South Africa. 605 



3rd Section. EUCAMPONOTINAE. 



Tribe PRENOLEPIDINI, Forel. 



Genus PRENOLEPIS, Mayr. 



Europ. Formicid , p. 52, 1801. 



Characters. 



^. Antennae 12-jointed, the scape sometimes very long, inserted 

 at the sides of the frontal area, not far from the hind margin of 

 the clypeus. Maxillary palpi 6-jointed. Mandibles rather narrow, 

 not large. Clypeus large. Frontal carinae short; frontal area not 

 sharply defined. Eyes usually large. No ocelli. Pro-mesonotal, meso- 

 metanotal and meta-epinotal sutures distinct. The nietanotum short 

 in the middle but fairly apparent at the sides, lower than the meso- 

 or the epinotum. The latter unarmed. Petiole short, bearing a scale 

 which is inclined forwards. Abdomen widest in front, somewhat 

 overhanging the petiole. A coarse and long pilosity frequently present. 



9- Antennae 12-jointed. Pronotum not exposed above, or only 

 very narrowly so in the middle. Mesonotum and scutellum fairly flat 

 above, the former with well defined parapsidal sutures, and the scu- 

 tellum sometimes with a median longitudinal impression. Abdomen 

 large. Scale of petiole thicker than in the ^ and also lower. Wings 

 with I cubital cell. 



cf. Antennae 13-jointed, smaller than the 9: or even smaller than 

 the ^. Eyes and ocelli very large. 



Distribution. Both hemispheres. 



We have only two species in our region ; they are easily distin- 

 guishable by the length of the scapes. 



P. longicornis, Latreille. (Plate IX, fig. 133). 



(as Formica) Hist. Nat. Fourmis, p. 113, $ 1802. 



Jerdon, Madras Jour. Litt. Sc. vol. 17, p. 124, 9. 1851. 



Andre. Ann. Soc. Ent. France, (6) vol. I, p. 60, cT- 1881. 



§. 2'7-3 nun. Pale smoky-brown, mandibles, antennae and legs 

 much paler, the tarsi slightly ochreous. Smooth and moderately 

 shining. Pubescence microscopic, present only on the legs andantennae. 

 The body has a moderately abundant, coarse, blunt, erect, long and 

 greyish white pilosity, less plentiful on the thorax than elsewhere. 

 A few thinner hairs on the femora. The chitinous integument is 

 rather thin. Head oval, excluding the mandibles and eyes not quite 



