Vot. I] STEWART—BOTANY OF THE GALAPAGOS ISLANDS 241 
From the above table it is seen that in the majority of 
instances the islands of the northern group have a larger per- 
centage of their floras common with the islands of the southern 
group than with each other, a condition hardly to be expected 
if oceanic currents were an important factor in transporting 
seeds to them. Robinson (1), p. 258, has already mentioned 
the small chance that many seeds would have of surviving even 
if they were washed up on the shores of the islands, a fact that 
can not be too strongly emphasized. While it is entirely possi- 
ble that the seeds of xerophytic plants might be able to grow if 
they were cast up in this way, it is hardly likely that mesophytic 
plants would be able to survive, because there are but two 
places on the islands—at the present time—where conditions at 
sea level are such as to offer them a suitable habitat. One of 
these places is Iguana Cove, Albemarle Island, and the other is 
Villamil on the same island, at neither of which places are 
there plants which do not have a wide distribution over the 
islands. While it is possible that the Humboldt current may be 
responsible for much of the xerophytic flora, it is hardly likely 
that the Panama stream could have played much of a role in 
this respect, as it flows from a region in which the flora is any- 
thing but xerophytic in character. 
Birds 
I am indebted to Mr. Edward W. Gifford, joint ornithologist 
to the expedition, for the following list of birds occurring as 
migrants and stragglers on the Galapagos Islands. 
Arenaria interpres Turnstone Common 
Heteractitis incanus Wandering Tattler Common 
Phalaropus hyperboreus Northern Phalarope Great numbers of phal- 
aropes, probably this 
species, were seen pass- 
ing through the archi- 
pelago. 
Zgialeus semipalmatus Semipalmated Plover Fairly common 
Numenius hudsonicus Hudsonian Curlew Fairly common 
Calidris arenaria Sanderling Fairly common 
Limonites minutilla Least Sandpiper Fairly common 
Querquedula discors Blue-winged Teal Fairly common 
