A Monograph of the Formicidae of South Africa. 135 



segment is smooth and shining, without deep punctures. A yellowish 

 and slightly erect pubescence is present all over, except on the head, 

 where it is sparser, and on the legs and mandibles, where it is 

 absent. On the abdomen it hides the puncturation to a certain 

 extent. There is a yellow and rather woolly pilosity abundant on 

 the coxae, base of the femora, clypeus, metanotum, petiole and 

 extremity of the abdomen, and ventral surface of the thorax, very 

 sparse or wanting elsewhere. Scapes, tibiae and mandibles smooth, 

 shining and glabrous, except for a small row of little hairs on the edge 

 of the tibiae. The colour is pale testaceous yellow. Head, mandibles, 

 tarsi and a narrow border at the apical margins of all the abdominal 

 segments, rusty red. A transverse brown streak on the vertex. 

 Wings feebly tinged with brown, especially the radial cell which 

 is dark brown. Described from the type." 



D. (Sub-G. Alaopone) montanus, Santschi, var. bondeoiti, Santschi. 



(Type) Eev. Suisse Zool., vol. 18, p. 750, $, 1910. (Variety) Ann. 

 Soc. Ent. Belg., vol. 56, p. 162, «? , 1912. 



" $ . 22-5 mm. Width of head, 3*8 mm.; width of thorax 1 mm.; 

 width of abdomen 3 - 8-l mm. Length of front wing, 20 mm. Light 

 testaceous yellow ; margins of abdominal segments narrowly reddish 

 yellow. Head brownish black, slightly reddish in front. Mandibles 

 and legs ferruginous. Wings slightly tinged with brown, stigma and 

 nervures brown. Head finely punctured, dull ; frontal area, man- 

 dibles, scape and first 2 joints of the flagellum, legs and last 

 segment of abdomen smooth and shining. Abdomen and the 

 thorax dull, as finely punctured as the head, but less densely, 

 thorax slightly shining. A yellow and woolly pilosity is plentiful 

 on the coxae, base of femora, sternum, the sides, the ventral surface 

 of the petiole and last abdominal segment. On the dorsum of the 

 thorax and petiole there is a more erect and silky pilosity, fine and 

 fairly long. The pubescence is downy, short and dense on the head, 

 denser on the abdomen, and less so on the thorax. Head slightly 

 convex above, the frons prominent. The frontal sulcus extends 

 to the anterior ocellus. The lateral ocelli separated farther from 

 each other than from the eyes ; the latter shining, with indistinct 

 facets. Frontal area wide and short. Clypeus feebly lobed in the 

 middle. Mandibles short, as wide as half their, length, the internal 

 margin as strongly excised as in diadema, with the apex bevelled 

 off. There is a wide and shallow impression near their external 

 angles. Petiole cubic, slightly rounded, a little narrower in front, 

 wider than long. Abdomen almost cylindrical. The stipites of the 



