A Monograph of the Formicidae of South Africa. 507 



the peduncle, viewed in front, pear-shaped, with the broad end down- 

 wards ; the 2nd node ovate, with a deeply impressed line above. 

 Hab., Port Natal." 



(Mayr.) loc. cit. " Mr. W. F. Kirby sent me for examination a 

 typical example of C. arbor ea, Smith, from the British Museum. This 

 £ agrees with C. tricolor, G-erst., only the pronotum has more and 

 stronger longitudinal rugae than is the case in the examples in my 

 collection, in regard to which I should say that in many specimens of 

 the latter the longitudinal rugosity is quite obsolete, in some only feebly 

 indicated, and in others quite distinct, so that I do not consider it 

 justifiable to base a variety on the specimen referred to." 



C. aeboeea, Mayr. 



Ent. Tidsk., pp. 250-251, 1896. 



"Abdomen dark brown, the 1st segment above brighter, especially 

 in front and in the middle. The exserted pilosity is almost entirely 

 wanting, on the ventral surface of the abdomen very sparse, the 

 external margins of the tibiae without exserted hairs ; the deciimbent 

 pubescence is sparse on the upper surface of the head and abdomen, 

 The head is almost a little wider than long, nearly quadrate, the 

 posterior corners more rounded off than the anterior ; it is longi- 

 tudinally striate near the inner margin of the eyes. Mandibles 

 quadridentate. Clypeus moderately arched . . . its anterior 

 margin fairly straight, without a depression behind. . . . The 

 scape of the 11-jointed antenna extends bej^ond the posterior margin 

 of the head, all the joints of the flagellum longer than wide. The 

 indistinctly defined frontal area is closely and longitudinally striate 

 like the frons. The eyes are placed distinctly .behind the middle of 

 the sides. The pronotum above is somewhat smooth near the suture 

 and has a broad obtuse hump on each side. The mesonotum is feebly 

 arched from side to side and obtusely marginate on both sides. The 

 dorsum of the epinotum has a transverse impression in front of the 

 base of the spines, less distinct in the middle. . . . The 1st seg- 

 ment of the petiole is widest between the anterior and middle third, 

 but yet very little wider there than behind ; there is a small and not 

 very evident tubercle on the sides in front of the posterior corners. 

 The abdomen is almost smooth or very delicately rugulose only on the 

 1st segment, but all the segments are finely coriaceous-rugulose near 

 the posterior margins. The upper surface of the abdomen has pili- 

 gerous punctures and the 1st segment is broadly truncate at the 

 base." 



