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 % Euchlora b , 

 Colliuris, Catascopm c , ^Apogonia d , a peculiar type of 

 Horia, &c. In America, Agra, Galerita, Nilio, another 

 type of Horia, Tetraonyx, Rutela, Doryphora, Alurnus, 

 Erotylus, Scotimts e , Cupes, Corydalis, Labidus, Heli- 

 conms, Castnia, &c. And in New Holland, Helluo, Ele- 

 phastomus, Anoplognathus, Diphucephala f , Cerapterus, 

 Helens, Adelium, Notoclea, Achihis, 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 Coleoptem,of the genera Lixus and 

 Brachycerus, and of the conical Buprestes %. 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/on?* / others also in their 



a Linn. Trans, xiv. t. iii./. 4. " Hor. Entom. 147. 



c Linn. Trans, ubi supr./. 1. 



* Ibid. xii. t, xxi./. 9. e Ibid.f. 14. 



* To this genus belong Melolontha aurulenta. Ibid. 400 ; and 

 M. sericea. Ibid. 463. g Latr. Geograph. 7- 



