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



P. plana ; in Western Africa is another colour variety, P. mecliana, 

 Westw., differing from the type form in being greenish bronze 

 instead of dark bronze, and having a slightly narrower elytral 

 band. 



Length 22-23 mm.; width 11-11J mm. 



Hah. Cape Colony (Graham's Town, Albany, East London, Port 

 St. John, Kimberley) ; Natal (the whole Colony) ; Orange Eiver 

 Colony (Vredeford, Bloemfontein, Kroonstadt) ; Transvaal (in 

 every district) ; Southern Ehodesia (Umtali, Salisbury, Mazoe, 

 Matopos). 



In the Cape Colony this species, like Genyodonta maculata, is 

 injurious to cultivated fruit ; Mr. G. A. K. Marshall informs me that 

 in Ehodesia it feeds on gum of Combretum and Acacia; also on 

 flowers of Acacia, Protea, and Zizyphus, on roses, and on various 

 wild and cultivated fruit. 



Pl^siorrhina (Dyspilophora) trivittata, Sch., 



Anal. Entom., p. 41. 

 Westw., Arcan. Entom., i., p. 186, pi. 46, tig. 3, $ . 

 Var. nigricans, Kraatz, Entom. Monatsb., ii., 1880, p. 27. 



Chestnut-red, with three black longitudinal discoidal bands reach- 

 ing from near the apex to a short distance from the base on the 

 prothorax, elytra with a very large, median yellow patch, somewhat 

 sinuate in the posterior part, occupying about one-third of the 

 length, slanting towards the suture which it does not reach, and con- 

 nected with the outer margin, this patch is usually edged with 

 fuscous; pygidium rufescent, somewhat infuscate longitudinally in the 

 centre. The colour of the type form is, however, very variable, and 

 as often as not the whole dorsal part of the prothorax, except for a 

 narrow flavescent margin, is fuscous or almost black and the elytra 

 also totally fuscous with the exception of the dorsal flavous patches ; 

 this is the variety nigricans, Kr. ; but I have examples from the same 

 locality in which the elytra are fuscous from the base to four-fifths of 

 the length only, with the prothoracic black bands of the normal 

 shape, or forming a wide black triangle enclosing two short bands of 

 the reddish background. Head and clypeus covered with round, 

 closely set punctures ; prothorax almost impunctate in the centre 

 and along the base, but deeply punctate on the sides ; scutellum im- 

 punctate : elytra deeply sinuate laterally, and slightly attenuate in 

 the posterior part, not costulate, and covered with somewhat closely 

 set non-seriate punctures ; under side glabrous, scabrose punctate 

 and plicate in the male, sparsely pubescent in the female ; inter- 



