102 Annals of the South African Museum. 



are proportionately larger. The posterior angles of the head are not 

 so round, thereby making the head look longer and more rectangular 

 than in nitida. The 3rd-5th abdominal segments are narrower, 

 being rather strongly compressed laterally. 

 Algoa Bay. (Brauns.) (S.A.M., G.A. colls.) 



L. (Lobopelta) pakva, Forel. 

 Eev. Suisse Zool., vol. 9, p. 332, g $ , 1901. 



" $ . 33-31 mm. Eelated to castanea, but the head is square, 

 hardly longer than wide, the scapes not extending beyond the occiput, 

 the flagellum with the 2-10 joints transverse, a little wider than long 

 and the last joint moderately thick and long; the eyes are very 

 small and flat, with a dozen atrophied facets; the node of the petiole 

 is much more squamiform, wider than long. Mandibles narrow, 

 smooth and shining, punctured, nearly as narrow at the apex as at 

 the base, the terminal margin concave. The lobe of the clypeus 

 forms a narrow beak, pointed and sharply carinate. Dorsum of 

 thorax horizontal, without sutures. Declivity of epinotum oblique, 

 but quite distinct from the dorsum. Legs shorter than in castanea. 

 Otherwise in colour, sculpture and pilosity resembling castanea, 

 which however is much narrower and differently shaped. 



" $ . 3-5 mm. Mandibles very short, not reaching together in the 

 middle. Scape hardly shorter than the 2nd joint of the flagellum, 

 the 1st joint of which is globose. Head sub-circular, a little longer 

 than wide. Eyes small. Thorax as wide as the head ; mesonotum 

 with two convergent sulci. Wings sub-hyaline, nervures and stigma 

 very distinct. Dark brownish yellow, antennae brown. 



Natal. (Haviland.)" 



Teibe ODONTOMACHINI, Mayr. 



Characters. 



£ and ? . The head has an irregular hexagonal outline ; this is 

 due to the inflection of the sides, at about the level of the eyes, so as 

 to form two oblique minor sides anteriorly. Mandibles inserted near 

 the middle of the anterior margin of the head, parallel, pointing 

 forwards and furnished with two or three teeth. When quite open, 

 the mandibles lie parallel with the anterior margin of the head, and 

 can be shut by an instantaneous movement which in some species is 

 done with such force as to produce a very distinct clicking noise. 



