296 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTO 
most eastern of all those along the northern coast of Venezuela. 
other islands to be considered are Testigos, Blanquilla, 
Los Aves, Los Roques, Cubagua, Tortuga, Aruba, Buen Ay 
Cura¢oa, the respective positions of which may be seen by 
to the accompanying map of the Carribean Sea and its surro 
lands (Pl. 23). All of these islands are identical in topog 
features with the plains and hills of Margarita. 
Of this group Cubagua is eight and one half kilometers (5.25 1 
from Margarita and twice the distance from Coche, of which 
almost a counterpart in size and physical characteristics. Nok 
cal research has been made upon it, though I have passed very 
the shore several times and have observed that it has the same 
features that Coche possesses. ‘There is no water on the is 
never has been any within historical time, and though in the 
sixteenth century it was the site of a thriving city of Spanish 
fishers, at present there may be seen only a few fishers’ huts. 
The next nearest island is La Tortuga, ninety kilometers ( 
from Margarita and the same distance from the coast of Ve 
The island is twenty kilometers (12 mi.) from east to west 
kilometers (6 mi.) from north to south. It is merely a raised 
reef and presents the appearance of a low waste of land with: 
most level surface and a very narrow beach. The vegetation 
ported by Ernst consists of sixty-nine different species of plants k 
ri 
common to American tropics of which, however, twenty-three a! 
is somewhat larger, being twenty-five kilometers in ci 
1s seventy kilometers north of Margarita. 
recorded visits to these islands, the flora may be assumed 
Roques is a group of islands one hundred and thirty ki 
(80 mi.) from the coast of Venezuela and consists of a 4 
rocky islands none over a kilometer in length. ‘The flora 
