Physiography of the Isthmus of Chocé. 371 
of the river’s annual overflow. Here forest-vegetation is almost 
n. , 
This region is preéminently aquatic and characterized as such 
“waders” 
ng flakes of Tillandsia usneoides are suspended from the tree- 
tops, playing in the wind like nature’s funeral streamers. In 
many of the trees life seems to be extinct, and a host of para- 
atives), They are frequently interspersed with a conspicuous 
arborescent Aroid (perhaps the poisonous Caladium arboreum) in 
Water, The margin of such growth appears frequently lined 
wiih patches of Pontederia azurea (perhaps crassipes ) and th 
ms, 
. Corresponding to the dense herbaceous cover of the evergne 
m Which millions of ichthyophagous alligators are found, is 
innd numeric display of mading birds. Among them 
f, rominent for its size is the her 
—e cb alamedea chavarilla). Seansores are also fully repre- 
also 
ot ‘ e *. ’ ° f £, 
Ni everglades are uninhabited, and from their nature will 
sO 
adas 
‘verglades as a fresh water repetition of the tide-water touts 
below, the section of the so-called palisades may be looked gre 
“Hesponding to the Atrato levees only with this difference, 
