A Monograph of the Formicidae of South Africa. 23 



(8). 8. Larger species, 12-13 mm. Node at least twice as long as wide. 



Arnoldi, Forel. 

 (8). 9. Smaller species, 6 - 5 mm. Node not more than half as long again as wide. 



Cooperi, Arnold. 

 (1.) 10. Dorsum of the mesonotum on a lower level than that of the epinotum ; 

 constriction between the 1st and 2nd abdominal segments very strong. 



(12). 11. Node of petiole truncate posteriorly lamellosa, Roger. 



(11). 12. Node of petiole rounded posteriorly. 



lamellosa, Roger, race longinoda, Forel, and var. rhodesiana, Forel. 



P. cribrinodis, Gerstaecker. (Plate I., fig. 4.) 



Monatsb. Akad. Wiss. Berlin, £ , p. 504, 1858. Emery, Ann. 



Mus. Stor. Nat. Genoa, vol. 37, p. 154, $ , 1896 ?. Forel, 



Deutsch. Bnt. Zeitschr. Beiheft, p. 208, $, 1913. 



£ . 14-16"5 mm. Black and dull, calcaria and last two joints of 



the tarsi ferruginous. Whole body covered with an exceedingly fine 



pruinose pubescence, yellow and somewhat longer on the clypeus ; 



apical abdominal segment clothed with short reddish-yellow hairs ; 



apex of anterior tibiae and anterior tarsus beneath clothed with 



short golden hairs. 



The head (excluding clypeus and anterior half of frontal carinae) 

 thorax, node of petiole and 1st abdominal segment, punctured ; the 

 spaces between the punctures are microscopically rugulose, the 

 punctures are fairly evenly distributed, round and shining, and 

 the floor of each puncture is pitted with two or three minute points. 

 The punctures are larger and closer on the posterior half of the head 

 and on the node. 2nd to 5th abdominal segments rugulose but 

 impunctate. 



Head with posterior angles well defined, occipital margin straight, 

 sides moderately convex. Eyes of medium size, situated at about 

 the middle of the sides of the head. Mandibles triangular, slightly 

 shining, and striato-punctate. Posterior margin of clypeus indistinct, 

 but produced into a wide angle between the frontal carinae. The 

 latter are broad in front and flat, much narrower and convergent 

 behind. The scape reaches beyond the occipital margin. The 

 nagellum is as long as the thorax, with the 2nd joint longer than 

 the 3rd. 



Pronotum wider than long, anterior margin arcuate and with 

 prominent anterior angles. Pro-mesonotal suture well defined, 

 meso-metanotal suture absent. 



The epinotum has a short triangular and blunt tooth on each side 

 above the declivity ; the latter is very steep, excavated, and with the 

 dorsal margin considerably raised, the lateral margins less so. Node 



