410 Transactions South African Philosophical Society, [vol. xiii. 



from the same locality, it may be altogether absent, or nearly as 

 strong as in Inhambane serripes. 



The type of this species I take to be the form occurring in the 

 Cape Colony, and also in Natal ; in the Transvaal the examples are 

 often partly melanic, but the size is about the same as that of the 

 type form ; in Northern Rhodesia, Beira, and Ovampoland the 

 examples are usually smaller, lighter in colour, and the lateral 

 clypeal ridge of the male as often as not is more vertically truncate. 

 It is this form which Boheman described as G. egregia, and 0. E. 

 Janson as G. quadricornis. The apical angles of the genital arma- 

 ture of the male are very slightly more angular in the variety than 

 in the type ; fig. 16 is not a faithful one. Fig. 17 is quite correct. 



Length 21-28 mm. ; width 10-14J mm. 



Hab. Cape Colony (the whole of the Eastern Provinces, Kim- 

 berley) ; Orange River Colony; Transvaal ; Natal ; Southern Rhodesia 

 (Salisbury, Mazoe, Sebakwe, Limpopo River, Tati, Victoria Falls, 

 Bulawayo) ; Ovampoland ; Nyassaland ; Mozambique (Beira). 



This species is very destructive to cultivated fruit (peaches, plums, 

 bananas, &c.) in the Cape Colony and Natal ; in Rhodesia, however, 

 where the cultivation of fruit is still in its infancy, it feeds on Acacia 

 gum (G. A. K. Marshall). 



Gen. ISANDULA, J. Thorns., 

 Le Natur., ii., p. 294. 

 Smaragdesthes (part), Kraatz. 



Mentum and ligula nearly straight laterally but slightly narrower 

 at base than at apex, where it is deeply sinuate in the centre and 

 hairy in the sinuation, the basal median part of the outer face is 

 broadly excavated, and the palps cavity moderately broad ; maxillae 

 short, robust, inner lobe with a strong tooth set at right angles with 

 the lobe, upper lobe short, sub-transverse, blunt inwardly and sub- 

 laminate ; in both sexes the clypeus is parallel, sub-carinate juxta 

 laterally, concave at apex with the anterior margin strongly reflexed 

 into a laminate wall in the centre, and over the basal part of the 

 clypeal excavation there projects slightly a short, horizontal, blunt, 

 transverse tooth which is the continuation of a median, rounded 

 longitudinal cephalic ridge beginning near the occipital part ; 

 antennal club of $ almost as long as the pedicel ; prothorax of the 

 usual sub-trapezoidal type ; scutellum longer than broad and very 

 acute, not grooved laterally, and slightly depressed in the centre ; 

 elytra very elongated, and only one-third narrower at apex than at 

 the base ; sternal process very long, slender, horizontal, but tapering 



