so ON THE CETONIID^ OF SOUTH AFRICA. 



appear to be aberrant in the section, and to connect it with the following one called Diceros. 

 The following species indeed may perhaps represent so many sub-sections : — 



II Cetonia elegans, Fa5. Colour green. ^ Clypeus with no horn. 



[2 Cetonia MacLeaii, K. Colour green with black spots. $ Clypeus with a short vertical horn. 



fS Cetonia pretiosa, Esch. Colour green with black spots. $ Clypeus with two lateral horns. 



•{ 4 Cetonia guttata, Oliv. Colour green and red with white spots. $ Clypeus with two lateral horns. 



1^5 Narycius olivaceus, Dup. Colour green. $ Clypeus with two lateral horns. 



60. With respect to the section Diceros, it is true that MM. Gory and Percheron have made 

 a genus of it ; but except a slight difference in the form of the thorax, and the colour, we find 

 little to distinguish the groupe from the section Naricia,, which I have founded on the badly 

 characterized groupe which has been called Narycius by Dupont. The organs of the mouth 

 are the same in both. However, there are as yet only two species described of the section 

 Diceros; namely, the Cetonia hicornis of Latreille, a Timor insect, which is figured in the 

 fourth volume of the first edition of Cuvier's Regne Animal, and the Bicheros decorus of Gory, 

 which is a Javanese insect. The Cetonia hicornis of Latreille is called " hicornuta" by Gory, 

 and, what is singular enough, is erroneously assigned by Mr. Kirby to his own genus Gnathocera. 



61. The type of the third section RnoMBORHiNiE is the Gnathocera Hardwickii of Gory, a 

 Nepaul insect, which is horned, and comes very near to the Goliathus A-maculatus of Africa. 

 The difference between them consists in both sexes of Coryphe Hardwickii having the clypeus 

 alike, and in the female having the anterior tibise externally bidentate. Although I am not 

 acquainted with the insect, I suspect that the Goliathus opalinus of Gory, which Mr. Hope 

 is said to have made the type of his groupe Trigonophora, will eventually be found to form 

 a sub-section of Rhomhorhince, where the female has a simple clypeus. And I have reason 

 to suspect, moreover, that the insect called " Jumnos Rucheri" in Mr. Hope's Coleopterist's 

 Manual, forms still another sub-section of the RhomborhincR, which comes yet nearer to the 

 sub-genus Goliathus than either of the former sub-sections, and osculates with it. All the 

 species of this section are Asiatic. 



62. The fourth section, ScniippELLi^, is African, and may be easily known by the sharp 

 prominent sternum, and by the anterior tibise of the males being without teeth, while those of 

 the females have externally three. This groupe will admit of sub-sections, of which the 

 following insects appear to be types. 



A. — Males without teeth on f 1 Cetonia flavomaculata, Fa5. $ with clypeus horned. 



the outer side of an-<| 2 Cetonia tsenia, P. B. $ with clypeus simple. Posterior tibise without a tooth, 



terior tibise. [^3 Cetonia umbonata, Klug. $ with clypeus simple. Posterior tibise unidentate. 



B. — Males having the ante- f 4 Cetonia suturalis, Fal. 



rior tibise somewhat<^ 



bidentate. \j> Cetonia * * * * 



63. Dr. Smith has brought home the type of the first of the foregoing sub-sections, viz. : — 

 Sp. 17. (Cetoninus) Coryphe flavomaculata, Fab. 



Gnathocera flavomamlata., G. P. p. 139. tab. 21. fig. 5. 

 Note. MM. Gory and Percheron have only described the female. The male has a short horn on the 

 vertex, and the apex of its clypeus is recurved and emarginate. The male has also its anterior tibise 

 without teeth. By the way, the trivial name of this common species ought to be " himacidata " for no 

 less an entomologist than Degeer originally described and figured it under this name. If this change be 

 adopted, the Cetonia bimamla., Wiedem., which if it be the same as the Gnathocera Umaculata of Gory, 

 appears to belong to some sub-section of Diceros^ may then be called Coryphe Wiedemanni. 



