262 



MR. G. BENTHAM 0> T EUPHORBIACEJE. 



Tetrorchidium 



Cunuria. 



Micrandra. 



Hevea. 



Joannesia. 



Garcia. 



Pausandra. 



Sagotia. 



4 species. 



2 species. 



2 species. 



9 species. 



1 species. 



1 species. West-Indian region. 



1 species. ~ 



1 species. 



Brazilian region. 

 Brazilian region. 

 Brazilian region. 

 Brazilian region. 

 Brazilian region. 



Brazilian region. 

 Brazilian region. 



Argithamnia. 37 species. From Chili and Buenos Ayres, over 



the Brazilian and West-Indian re- 

 gions, to Mexico and the Southern 

 United States. 



Caperonia. 

 Pseudocroton. 



Manihot. 



Pachystroma. 



Bernardia. 



A deli a. 



Leucocroton. 



Caryodendron 



Conceveiba. 



Gavarretia. 



Lasiocroton. 



19 species. Brazilian and West-Indian regions. 



West Indies. 



Brazilian region. 

 Brazilian region. 



1 species. 

 80 species. 



1 species. 

 24 species. Brazilian and West-Indian regions. 



7 species. 



2 or 3 species. West Indies. 



2 species. ~~ 



3 species. 



Astrococcus 

 Angostyles. 



1 species. 

 1 species. 



1 species. 

 1 species. 



Brazilian region. 

 Brazilian region. 

 Brazilian region. 

 West Indies (connected with the Asiatic 



Mai lotus 1 ?). 

 Brazilian region. 

 Brazilian region. 



It will be observed that these genera are mostly perfectly de- 

 tached, neither forming connecting-links between any two genera 

 nor passing gradually into any other one. Tw r o, Avellanita and 

 Lasiocroton, might perhaps be regarded as representatives of Old- 



World 



Micrandra, Hev 



be to a certain degree related to each other ; so also Bernardia 



and Adelia ; and Man 



in some measure as standing between Croton and Jatropha. 



(2) Old World. — In the following enumeration I include in the 

 A fricano- Australian region the whole of tropical Africa and Asia, 

 the Mascarene islands,the Malayan archipelago, tropical Australia, 

 and the South-Pacific islands. I distinguish as the Indo-Austra- 

 lian region the same area to the exclusion of tropical Africa and 

 Madagascar ; 



,scar ; tropical Asia includes the Malayan archipelago ; 

 and the Malayan region includes Malacca as well as the Archi- 

 pelago. The list, like the preceding American list, does not 



