ON THE CETONIID^ OF SOUTH AFRICA. 



39 



the marking of the elytra, we find G. giganteus to agree with G. regius. The three species are very close 

 to each other ; but G. Drurii is so different from them all, as almost to form another sub-section of 

 Gigantic Goliathi. 



Sp, (Cetoninus) Goliathus Princeps, Hope. 



Descr. Goliathus nigro-piceus, thorace vittato etc. (Vide Hope's Coleopterist's Mamial.) 

 $ Incognitus. 



$ Clypeo simplice sub-quadrato antice subsinuato, maculis duabus verticalibtis fere mediis 

 fulvis. 



Goliathus princeps, Hope, Col. Man. p. 117. 



Long. corp. 3 inches. 



Note. Mr. Hope has given a figure and an excellent detailed description of this insect, of which an 

 unique female specimen exists in his collection. To his work I refer the reader for observations on the 

 section, as weU as on the species. Although it remains doubtful whether this be not the female of C. 

 Cacicus, I am, for my part, inclined to believe Mr. Hope to be in the right when he considers it as the 

 female of a new species. 



71. In concluding my remarks on this interesting section, 1 have to state that it corresponds 

 exactly with the limits which Professor Klug, in the Appendix to Erman's Voyage, above 

 mentioned, has assigned to his genus Goliathus. Nevertheless, I consider the most typical 

 Ooliathi, in other words, those species of Goliathus, which are most distinct from all other 

 species of their common genus Cetoninus, to be contained in the section Inca, Thus Inca is 

 aberrant when we refer to the sub-genera of Cetoninus, but on the other hand it is typical 

 when we are referring it to the sections of Goliathus. 



Section 4. Inca, Lepell. et Serville. 



72. This groupe has been most properly placed by MM. Latreille and Kirby, among the 

 Goliathi of Lamarck. But MM. Gory and Percheron have more lately, with a singular 

 taste for affinities, interposed between Inca and the other sections of Goliathus, not only the 

 sub-genera Platygenia and Cremastocheilus, but I know not what besides. The section 

 of Goliathus, called Inca by MM. Lepelletier and de Serville, has the back even more 

 convex than that of any of the gigantic Goliathi; but it may easily be known from all 

 the rest of the sub-genus by its proximity to the genus Trichinus. It is, in fact, the Trichinus 

 form of the sub-genus Goliathus, and by it the genera Cetoninus and Trichinus meet so as to 

 close that circle which constitutes the family of Cetoniidce. The section may be characterized 

 by its labrum, which is almost lobate in the middle, by the subcircular convex thorax with 

 denticulated margin, by the convex elytra, by the internal spine of the fore femur, by the 

 epimeron not being prominent between the thorax and elytra, and, finally, by the bicornuted 

 clypeus of the male, although this last character is not to be considered by any means as 

 peculiar to the groupe. Here it may be noticed with respect to the whole sub-genus 

 Goliathus, that I consider the true clypeus of the groupe, that is, the clypeus of the female, 

 which is nearly of the same form and construction throughout the various sections, to be in 

 all essentially quadrate, having the anterior angles in general sharp, and the fore-margin 

 rather concave. This general form of clypeus becomes horned in two ways. In the section 

 of Gigantei, the trunk of the bifid horn proceeds from the middle of the emargination of 

 the anterior margin of the clypeus, and what are called the lateral teeth, are merely the angles 

 of the quadrate clypeus. In the section of Smithii, particularly in Goliathus Polyphemus, 



