246 D, Prain — The non-indigenous species of the AndanwM Ilora. [No. 3, 



that affect a drier climate than that of the Andamans ; such species 

 have been distinguished by an (*) : — 



2. Siich as might he expected to hold their oivn in the struggle for 

 existence should the Settlement happen to be abandoned — a class the 

 precise limits of which cannot be laid down with certainty ; this is the 

 class not marked (*) and at the same time not noted as occurring spon- 

 taneously ; it is moreover from this that the next class is recruited ; 



3. Such as are naturalized in the Andamans noiv — the species for 

 which there was evidence either in 1866 or 1890 that spontaneous 

 appearance has actually commenced. 



The two former classes do not require further consideration ; taken 

 in detail we find that of the last class 14 species were naturalized prior 

 to 1866. These were :— - 



Impatiens Balsatnina. Lantana camara. 



Clitoria Ternaiea, Stachytarpheta indica. 



Cajanus indicus. Ocimuni sanctutn. 



Carica Papaya, Gomphrena glohosa. 



Vinca rosea. Ganna indica. 



Ipomoea Quamoclit. Cocos nucifera. 



Solanum Melongena. Cynodon Dactylon. 



Before 1889 14 other species, that had been introduced prior to 1866 

 but had not at that date become naturalised, had begun to appear spon- 

 taneously. These were : — 



Bixa Orellana. Capsicum minimum,. 



Gossypium harhadense. Datura fastuosa. 



Moringa pterygosperma. Vitex trifolia. 



Trichosanthes cucumerina. Mirahilis Jalapa. 



Luffa cegyptiaca, Hicinus communis. 



Zinnia elegans. Gasuaria equisetifolia. 



Tagetes, sp. Goix Lachryma. 



At the same time 9 other species not present in the Andamans at 

 all in 1866 were nevertheless appearing spontaneously in 1890. These 

 were : — 



Fhaseolus trilohus. Ipomoea coccinea. 



Bauhinia acuminata. Torenia, sp. 



Pithecolohium dulce. Thunhergia alata. 



P. Saman. Beeringia celosiodes. 



Golocasia antiquorum. 

 So that in 1890 there were in the Andamans no fewer than 37 

 species occurring spontaneously that had originally been intentionally 

 introduced, as against 14 species of this kind in 1866. 



It is necessary to note further that one species, Zea Mays, which 



I 



