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



type form I have met with, but the genitalia do not in the least 

 differ. 



Length 26-48 mm ; width 13-23 mm. 



Var. oberthuri, Deyr., Bull. Soc. Entom. Franc, 1876, p. lxxxii. 



If the type form, and especially the variety layardi, seem to have 

 a somewhat restricted range, the same cannot be said of the var. 

 oberthuri, which ranges from the Zanzibar mainland to Lourenco- 

 Marquez. 



It is quite similar to D. layardi, except that it has no white bands 

 on the elytra. But several examples of this species which I have 

 examined exhibit patches, and occasionally traces of such bands. 

 When I add that such examples have been noticed and described 

 under the varietal names of bifasciata, Kr., cyanea, Kr., lucida, Kr., 

 I have shown to what length "splitters" have gone in the determina- 

 tion of Cetonini. 



Length 33-47 mm. ; width 16-22 mm. 



My examples from Delagoa Bay are females. Kolbe records this 

 so-called species and the 3 varieties above-mentioned from Usam- 

 bara, Zanzibar, Dar-es-Salaam, and Bagamoyo in Eastern Africa. 



Gen. EANZANIA, Bertol., 

 Mem. Ac. Bologn., 1855, p. 420. 



Mentum ampliate rounded laterally, ligular part narrower than 

 the mentum and divided by a very deep, straight notch into two 

 parallel lobes truncate at apex, palps cavity very long, deep and 

 broad and quite lateral, the outer face of the cavity is narrower than 

 the inner ; maxillae robust, inner lobe simple, upper lobe elongated, 

 styliform, slightly hooked inwardly at tip, and very densely peni- 

 cillate on the upper and outer edge ; head and clypeus of male 

 produced into a long, deeply concave, shovel-like, sub-parallel 

 process slightly broader at apex than at base, curving upwards in 

 the anterior part the margin of which is briefly bi-dentate in the 

 centre, and the angles dentate ; there is a small tooth on each side 

 of the lateral margin at about the median part, and a long, hook-like, 

 sub- vertical one on each side of the base above each eye ; in the 

 female the clypeus is nearly parallel and slightly tri-sinuate in front ; 

 prothorax one-fourth broader than long, and ampliate rounded 

 laterally in the anterior part, the base is very slightly sinuate on 

 each side of the scutellum, but straight above it ; elytra elongated, 

 moderately attenuate towards the apex which is two-thirds of the 

 width of the base ; mesosternal process parallel, truncate at tip ; 



