26 



ON THE CETONIID^ OF SOUTH AFRICA. 



probable that the above description is rather the character of a section than that of the sub-genus to which 

 this section belongs. I beheve that this sub-genus contains many forms, all resembling Goliathus. Mr. 

 Hope, for instance, indicates, as a section, a genus called Jumnos which may possibly come here. But I 

 know it not. 



Sub-genus 2. Agestrata, Eschscholtz. 



50. This groupe agrees with Philistina, inasmuch as the maxilla is armed with a corneous 

 tooth, which is covered with a long pencil of hairs, while the clypeus is quadrate and formed 

 like that of the female of the foregoing sub-genus. But here the mentum is deeply emargi- 

 nate, the mesosternmn is advanced, the scutellum is minute, and the sexes differ in only one of 

 them having the anterior tibiae externally tridentate. The type is the common Agestrata 

 chinensis, and there is no other section as yet known, although Mr. Hope says that he is 

 acquainted with ten species. 



Sub-genus 3. Lomaptera, G. P. 



51. This sub-genus differs from Agestrata in having the clypeus and mentum deeply cleft, 

 while the maxilla terminates in a mere pencil of hairs, the mesosternum is produced into a 

 spine, and the scutellum disappears under the enormous sharp-pointed lobe of the thorax. In 

 neither this nor the preceding sub-genus are the pseudonychia very distinct. Lomaptera is a 

 groupe composed of beautiful insects, which appear to have their metropolis in Timor and New 

 Guinea. A good type is the splendid Lomaptera bivittata of MM. Quoy and Gaimard. But 

 the truth is, that only one of the sections is known. 



Sub-genus 4. Gymnetis, M'L. 



52. This sub-genus has the clypeus entire, and the quadrate mentum simply emarginate at 

 the front. Here, moreover, the scutellum altogether disappears under the great lobe of the 

 thorax. Only two American sections have as yet been characterised, viz. 1. Sub-cornut^, 

 of which the type is Gymnetis nitida (Horai Entomologicse, p. 153,) which may be charac- 

 terized by their sub-cornute clypeus, and very minute scutellum ; and 2. Marmorin^, K., of 

 which the type is Gymnetis marmorea, (Zool. Journal, vol. 3. p. 153,) and which may be 

 distinguished by their simple clypeus, and their having no visible scutellum. But there are 

 other sections known, one at least of which is Asiatic, 



Sub-genus 5. Macronota, Wiedemann. 



53. MM. Gory and Percheron exhibit their acquaintance with the signification of this name 

 by always terming it " Macronata." The sub-genus comes very close to Philistina. As in it, 

 the elytra are here much wider than the thorax, which is not deeply lobed, and the scutellum 

 is conspicuous, while the mesosternum is not far advanced. But, on the other hand, the 

 deeply emarginate mentum, and the maxilla without corneous teeth, serve to separate it from 

 Philistina, and to join it to Gymnetis. Macronota is an extensive groupe, offering sections and 

 sub-sections. I am not aware, however, that any have been hitherto separated except the 

 genus Dorysceles of Dejean, which is merely a section of the sub-genus Macronota, and of which 

 the type is Macronota calcarata of Klug, which is a native of Madagascar. This section is to 

 be known from the rest of the sub-genus Macronota by the clypeus being narrower at the 

 apex, and by the mentum not being so deeply emarginate. The male of the only known 

 species has two long spines inserted in the extremity of the posterior tibia, and articulating 



