Physiography of the Isthmus of Chocé. 369 
: “commencing on the Atlantic shore in the Gulf of Uraba may be 
added to the table just given. ; 
Section I. Mangroves and Tidewater Be et Ae ay 
ol 
hacer, Aroides, lacustric Palmacez and Musacez, all ‘hich 
This section, of an extent of about twelve English miles by 
Way of the river, may be characterized geologically as floating 
alluvium, which is covered by a low but densely interwoven 
arboreal vegetation. Mages? 
Section II. The Atrato Levees—Where the surface of the © 
* Varied in habit, and the division of Scandentes is a provans 
» we find a close analogy to them in the member ie 
> 
"ream ag taking to the water. 
Phasti %® are leading forms, together with the i 
SECOND SERIES, Vou, KXVIE, No-6L—MAY) 1958 © 
Pe Oe 
