700 Annals of the South African Museum. 



the convexity behind it appear gibbous. The fairly thick scale has 

 four whitish hairs ; there are 5 or 6 on the epinotum, and some on the 

 thorax and head. ..." 



Sub-genus MYRMAMBLYS, Forel. 

 For characters see table of sub-genera. 



Key to the species, 2J. and 9. 



(2) 1. Body entirely dull ; 1st segment of abdomen closely reticulate -punctate 



Berthoudi, Forel. 

 (1) 2. At least the abdomen shining ; no part of the abdomen reticulate -punctate. 

 (6) 3. 2J., Head steeply and rather abruptly truncate in front; <3 minor, head clearly 



narrower in front than behind ; colour either yellowish brown or black. 

 (5) 4. 2J.j Head strongly reticulate-punctate, the truncate face very coarsely 



rugoso-reticulate ; meso-epinotal suture not deep ; ^ minor, colour yellowish 



brown ...... ostiarius, Forel. 



(4) 5. 2j_, Head evenly reticulate-punctate all over ; meso-epinotal suture wide and 



very deep ; ^ minor, colour black . . . aequitas, Santschi. 



(3) 6. 2)., Head not clearly truncate, seen in profile it has a steep anterior face 



Which forms a continuous curve with the frons and vertex ; ^ minor, head 

 oval, hardly narrower in front than behind , . . Brookei, Forel. 



C. Berthoudi, Forel. 



Bull. Soc. Vaud. Sc. Nat., vol. 16, p. 108, 21, 1879. 



"ijj ( = 2J.), 7-5 mm. Head trapezoidal, the posterior margin straight, 

 the sides convex. Mandibles short, thick, moderately pilose, 7-dentate, 

 with numerous and deep, large punctures ; very finely reticulate 

 between the punctures. Clypeus narrow, feebly convex, almost rect- 

 angular and parallel-sided, not carinate, barely lobed. Its anterior 

 margin is straight in the middle, and fairly deeply emarginate on 

 each side. Clypeal pits deep. Frontal area very small but distinct. 

 Frontal carinae long, longer than the clypeus, strongly curved. 

 Thorax fairly short, evenly arched from front to back, widened in 

 front, compressed behind. The pronotum has in front on each side 

 a slight tubercle or obtuse angle, (like that of C.fulvopilosus, but much 

 less distinct). Pro-mesonotal suture distinct, meso-epinotal suture 

 entirely obsolete. The dorsal surface of the mesonotum is fairly 

 wide and feebly convex. The epinotum is tectiform and has no basal 

 face ; its sides rise in a slope up to the summit winch forms a distinct 

 but obtuse longitudinal ridge. The declivity is triangular and 



