

1907.] Catalogue of the Coleoptera of South Africa. 383 



aciculate and punctate like the scutellum ; the elytra have the same 

 aciculation but the punctures are plainer, they each have a white 

 cretaceous band reaching from near the humeral angle to the suture, 

 and ascending there to a very short distance from the apex ; 

 pygidium white with the apical margin green ; under side aciculate 

 and punctate as on the prothorax ; metasternum grooved from the 

 base to the apex of the mesosternal process which is glabrous ; 

 anterior tibiae with 5 or 6 remote conspicuous inner teeth, hind ones 

 without a tooth on the upper side. 



Female : Colour of the male but less shiny, especially on the 

 prothorax, the upper part of the head is covered with the same 

 cretaceous coating, except for a median longitudinal black line ; the 

 prosternum is broadly, deeply, and very closely punctate, the outer 

 marginal white band is narrower than in the male, the scutellum 

 and elytra are strongly punctate, but not so closely or deeply as 

 on the prothorax; the outer marginal band of the elytra is continued 

 along the suture to one-third of the length, and the punctures on the 

 under side are more numerous than in the male. 



Length 29-47 mm. ; width 13-22 mm. 



This is the typical insect described by Westwood, and procured 

 for the first time by Burton in Rustenburg (Transvaal). 



It is this form which occurs in the Transvaal (Lydenburg, 

 Pretoria, Rustenburg, Potchefstroom, Zoutpansberg, Waterberg, 

 Barberton, Pietersburg, Waterval, &c. ; also in Natal (Tugela River), 

 Southern Rhodesia (Umtali, Matopos, Salisbury, Mazoe, Enkeldoorn, 

 Sebakwe), and Mozambique (Lourenco-Marquez, Inhambane teste 

 Klug, Beira). 



Feeds on Acacia gum, but is also found on the wounded branches 

 of a species of Gombretum (G. A. K. Marshall). 



Vak. layaedi, Per., pi. xlv., fig. 2, Trans. S. Afric. Phil. Soc. 

 vi., 1892, p. 38. 



This variety differs from the type form in having the cretaceous 

 band of the elytra prolonged slantingly in both sexes from the apex 

 of the suture to the base at a point equi-distant from the humeral 

 angle and the scutellum. 



This variety, for it can hardly be called otherwise, seems to have 

 a different habitat from that of the type form. The latter is restricted 

 to the Transvaal and parts of Natal, but the variety layardi is to 

 be found in Damaraland and Ovampoland ; it occurs also on the 

 Zambesi near the Victoria Falls, and it has been recorded from the 

 neighbourhood of Salisbury in Southern Rhodesia. Some males 

 of this variety are considerably larger than any male of the 



