642 Annals of the South African Museum. 



as the latter, the head wider than in cognatus, less narrowed in front, 

 the cheeks entirely devoid of pilose hairs. The scale is also thicker 

 and more convex on hoth faces. The whole insect is dull above, 

 the abdomen shining below, the head and thorax very closely punc- 

 tured, the abdomen transversely striolate. A long, fine and decum- 

 bent pubescence on the whole body, sparse, more abundant on the 

 abdomen; in cognatus and compressus the decumbent pubescence is 

 just as abundant but shorter, and the punctures from which the 

 hairs arise are less evident; in addition, there are also some long 

 and erect hairs as in cognatus. The pubescence is very short and 

 entirely decumbent on the scapes, longer and more oblique on the 

 tibiae, which have numerous setae on the ventral margin; the 

 tibiae are compressed, but not at all prismatic, their sides barely 

 canaliculate in the larger examples. Delagoa Bay." 



Race knysnae, n. r. 



% 155-1G-3 mm. Black, the flagellum, lower third of the sides 

 of the thorax, the petiole and basal third of the femora reddish 

 ochreous; apical, margins of the abdominal segments testaceous and 

 translucent. Head and thorax nitidulous, abdomen smooth and very 

 shining. The sculpture of the head and thorax finer than in macu- 

 latus i. sp. Pilosity erect, fulvous, sparse on the head and abdomen, 

 fairly abundant on the thorax. Pubescence decumbent, very short 

 and sparse all over. Sides of head without exserted pilosity. Man- 

 dibles shining, coarsely punctured, the punctures larger and more 

 abundant than in race Liengmei or maculatus i. sp. Clypeus with a 

 few shallow punctures. Head, including the closed mandibles, like 

 that of Liengmei but more triangular, the occipital lobes larger and 

 more prominent posteriorly, the posterior margin much more concave ; 

 the head is as long as wide, and at its widest point (just behind the 

 2nd third) almost twice as wide as across the anterior margin of 'the 

 clypeus. The latter carinate, the anterior margin of the lobe sharply 

 crenulate. The scapes extend beyond the hind margin of the head 

 by one-fourth of their length. Eyes placed in the middle of the 

 sides. Frontal carinae as wide apart in the middle as they are long. 

 Mesonotum more convex lengthwise than in Liengmei or maculatus 

 i. sp., the metanotum indistinct. Dorsum of epinotum slightly flat- 

 tened transversely, distinctly delimited from the sides, about twice 

 as long as wide, longer than the subvertical declivity, its junction 

 with the latter being a wide but distinct angle. Scale of petiole 

 nearly twice as high as wide, the two faces only very slightly convex, 



