508 GEOGRAPHICAL DISTRIBUTION OF INSECTS. 
Let us next particularize a few of the peculiar types 
that distinguish particular continents and countries. The 
genera Manticora, Graphipterus, Glaphyrus, Eurychora, 
Pneumora, Masaris, and many others, are peculiar to 
Africa. In Asia alone we find Mimela a , Euchlora b , 
Colliuris, Catascopus c , Apogonia d , a peculiar type of 
Horia, &c. In America, Agra, Galerita, Nilio, another 
type of Horia, Tetraonyx, Rutela, Doryphora, Alurnus, 
Erotylus, Scotinus e , Cupes, Corydalis, Labidus, Heli- 
conius, Castnia, &c. And in New Holland, Hettno, Ele- 
phastomus, Anoplognathus, Diphucephala f , Cerapterus, 
Helens, Adelium, Notoclea, Achilus, Thynnus, Nyctero- 
bius, &c. 
The countries bordering upon the Mediterranean, the 
Black, and the Caspian seas, agree in producing similar 
insects. These countries, and the Cape of Good Hope 
though so distant from them, appear to be the principal 
seat of Heteromerous Coleopt era, of the genera Liocus and 
Brachycerus, and of the conical Bnprestes s. But the in- 
sects of Guiana, on one side the Cordilleras, differ from 
those of New Granada and Peru on the other ; and simi- 
lar differences are observed in other neighbouring coun- 
tries separated by natural boundaries. 
iii. Another head connected with the topographical 
distribution of insects relates to their representation of 
each other. Here we may observe, that some insects re- 
present each other only in their form ; others also in their 
a Linn. Trans, xiv. t. iii./. 4. b Hor. Entom. 147. 
c Linn. Trans, ubi supr./. 1. 
d Ibid. xii. t. xxi./. 9. e Ibid.f. 14. 
f To this genus belong Mclolontha aurulcnta. Ibid. 400 ; and 
M. sericea. Ibid. 463. * Latr. Gcograph. 7. 
