J01 
FLUVICOLA, 
the chief type of this sub-family. A great uni- 
formity of plumage runs through all the species we 
have seen of this group, so that very many, we 
doubt not, have been overlooked or disregarded as 
varieties ; the predominant colour is pure white, 
with deep black wings and tail; sometimes the whole 
or a part of the hack and head is grey ; the largest 
species is the Fluvicola nengeta , which is clothed 
in the same coloured plumage as the American, 
mock -bird, while the smallest* is so like the Euro- 
pean Muscicapci atricapella, that it is not surpris- 
ing the old ornithologists in their systems placed 
it immediately after that bird. The aspect of all 
these birds, in short, will remind every one of the 
stone-chats and wheat-ears, and thus will do away 
with the necessity of proving that they represent each 
other. One of the most remarkable species is the 
Fluvicola cursorial, because in this we see the tail, 
although not unusually long, is so. much graduated 
as to assume something of the same shape and ap- 
pearance as that of the next genus Rhipidura ; an- 
other of the most typical species is the 
* Fluvicola bicolor, Sw. j Muscicapa bicolor, Gm., Latham, 
&c. PI. Enl. 675. f..l. 
T Zool. Illustrations. 
