1891.] D. Prain— TAe Vegetation of the Coco Or'oup. Z&1 



And in addition to these instances it may be remarked that the 

 whole group of species -which may possibly have been introduced in the 

 crops of grain-eating birds can be only considered as indirectly bird- 

 introduced, since some accident must have happened to account for the 

 death of the introducing bird in order to explain the germination of the 

 seed and final introduction of the plant. 



The "migrant" species, meaning thereby all that have certainly 

 been introduced and all for which introduction is conceivable, may be 

 divided into "civilized" species introduced by man, and " sylvestrian " 

 or wild species. The wild species may be divided into "coast" 

 species, further subdivided into "marine" and "littoral" species, the 

 whole of the coast species being sea-introduced; and into "inland" 

 species. These latter, which may of course also occur on the shore, but 

 for the introduction of which the sea has not been responsible, may 

 best be classed as " wind-introduced " and as " bird-introduced " species 

 Species introduced by birds may have been introduced either attached, 

 to the bodies of these or carried in their crops. These different groups 

 will be discussed in detail ; last of all the " remanent " species will be 

 considered. 



The "civilized" species comprise cultivated plants and weeds of 

 cultivation or of waste places ; the former corresponding practically to 

 domestic animals like the cow or horse, and to domestic insects like the 

 bee or silk- worm, the latter to the vermin that associate themselves with, 

 or accompany man and his domestic creatures. This group therefore 

 contains the species that may, directly as economic or aesthetic plants, 

 or indirectly as weeds, have been inti-oduced by man. The list subjoined 

 includes the whole of the species present in the islands that are known 

 to be sometimes thus introduced ; those that are likely to be here in- 

 digenous, or to have been introduced by other than human agency, are 

 enclosed within brackets and will be found again in one or, at times, more 

 than one of the subsequent lists. 



List of Civilized s^qciqs found in the Coco Grotip. 



* Nymphaea rubra. This variety has perhaps been introduced 



intentionally into Great Coco, where 

 it occurs in the small lake. It has 

 to be recollected that it is a favourite 

 flower with the Burmese and is sold 

 for votive purposes in the Pagodas 



volving ifc more hopelessly in the tangled sticky mass. After the snake died its body 

 was caref ally examined and it was found that it had suffered no previous physical 

 injux-y which could account for its inability to escape. 



