18 Transactions South African Philosophical Society. [vol. xii. 



sometimes in incredible numbers. The true Sericides, as represented 

 by Triodonta, Serica, Omaloplia, Trochalus, and Pleophylla, are very 

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

 Ablahera, with fairly numerous species, Camenta, Ahlaheroides , and 

 Ttdhaghia are indigenous. The true Melolonthini 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, Onochceta, Macrophylla, 

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

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



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

 Anomala, Popilia, PhcBuomeris, and Adoretiis, none of which are 

 restricted to South Africa. 



But the Cetonin^ are very numerous in genera and species, and 

 some of the purely South African forms are very peculiar ; such are 

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

 Heteroclita, immbering two ; Bhinocoeta, also with two species liviDg 

 in cattle enclosures, Xiphoscelis, Anoplochilus, Odontorhina, &c. 



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

 be myrmecobious, Genuchus, Scaptohius, Trichoplus, Nyassiniiis, 

 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 Melolonthincs from the 

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

 tion of the spiracles on the abdomen as follows : — 



^ . . ( Covrince, 



Laparosticti] ^^. 7 ,7 • 

 -^ I Melolonthtnce. 



iUutelince, 



Pleurosticti-lDynastincB, 



CetonincB. 



This arrangement throws, however, the CJiironiiice, Orphnince, 

 HybosorincB, and Geotrupinm, which are certainly not coprophagous 

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

 Coprina and AphodiincB, whereas their truest affinity lies with the 

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

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

 Melolonthmm in the pleurostictic division, as proposed by Lacordaire 

 and other authors. 



