18 Transactions South African Pliilosopltical Socictij. [vol. xii. 



sometimes in incredible numbers. The true Scricidcs, as represented 

 iDy Triodonta, Serica, OmalopUa, Trochalus, and Plcophiilla, are very 

 numerous, but only the last genus is peculiar to South Africa. 

 Ahlahera, with fairly numerous species, BfsMOiitk, Ablaberoides, and 

 Tulbaghia are indigenous. The true MelolontJiini are not numerous, 

 and only two genera are purely South African, but in the Macro- 

 ■phyllini five genera having a very peculiar facies are not found 

 elsewhere; they are Sparrmannia, Sebaris, Onochata, Macroplnjlla, 

 Encylophylla ; and in the Pachypodini, Acliloa, Paraclitopa, Clitopa, 

 j^danomerus, &c., can be considered as South African genera. 



The sub-family Eutelin.e is only represented by the genera 

 Anomala, Popilia, Phcenomeris, and Adoretus, none of which are 

 restricted to South Africa. 



But the Cetonin.e are very numerous in genera and species, and 

 some of the purely South African foi'ms are very peculiar ; such are 

 Hypsclogenia, with a most variable species ; Ischnostoma, with five ; 

 Hcteroclita, numbering two ; Bhinocoeta, also with two species living 

 in cattle enclosures, Xiplioscelis, Anoplochilus, Odontorltina, &c. 



In the tribe CremastocJtiUni, of which several genera are known to 

 be myrmecobious, Gcnnchus, Scaptobius, Trichoplus, Nyassinius, 

 Placodidus, are, so far as we know, restricted to the South African 

 fauna ; and among the Trichini, Agcnius and Stcgopterus are also 

 South African. 



A full table of the distribution of the genera will be found appended 

 to this part of the Catalogue. 



Classification. — Sharp has slightly altered Lacordaire's arrange- 

 ments, which excluded the sub-family Melolonthina from the 

 Lapaeosticti, and he divides the Family according to the disposi- 

 tion of the spiracles on the abdomen as follows : — 



. . ( Coprina, 

 Laparosticti \ ^,^17 n ■ 

 ^ y MeloiontkincB. 



iRutelince, 



Pleurosticti - Dynastina, 



{ CetonincR. 



This arrangement throws, however, the Chironince, Orphnince, 

 Hybosorince, and Geotrupina, which are certainly not coprophagous 

 insects, and the Trogince, which are still less so, among the true 

 CoprincB and ApJiodiince, whereas their truest affinity lies with the 

 DijnastincB, which, however, are pleurostictic ; and in spite of the 

 slight difference in the position of the spiracles, I prefer to leave the 

 Mclolonthime in the pleurostictic division, as proposed by Lacordaire 

 and other authors. 



