250 PROCEEDINGS OF THE AMERICAN ACADEMY. 
NarBorouGH ISLANnpD. 
In proportion to its size and interest Narborough has received the 
least botanical attention of any of the islands. This is to be regretted, 
as it is not only the most remote from the mainland, but is much shielded 
by the neighboring long and lunate island Albemarle from any direct 
drift from the other islands or from the continental coast. Although it 
is to be expected that Narborough would on this account possess a 
decidedly peculiar flora, the single collection made there by Messrs. 
Snodgrass and Heller and including 59 different plants, contains only 
4 species confined to the island and only 26 which are confined to the 
archipelago. ‘hus the percentage of peculiar and strictly Galapageian 
plants is less rather than more than on the other large islands. This 
lack of peculiarity may well be due to recent volcanic activity on Nar- 
borough, since this would tend to impoverish the flora except as it was 
replaced by recent immigration from the other islands. 
Tue Seymour IsLAnps. 
North and South Seymour are two islets lying just north of Inde- 
fatiyable, from which they are separated by channels only 1 or 2 km. 
broad. They are of relatively low altitude. South Seymour is some- 
what larger than North Seymour and lies directly between it and 
Indefatigable. The Seymour Islands have been visited for botanical 
purposes only by Messrs. Snodgrass and Heller, who collected upon 
‘the north island 18 plants and on the south 34. As upon the adjacent 
Indefatigable no ferns have been found on the Seymour Islands. On 
South Seymour there are 2 endemic species not known to occur upon the 
other islands, namely, Bursera malacophylla and Euphorbia nesiotica, 
while North Seymour has an as yet indeterminate plant (Nyctaginacea ?) 
which may well prove peculiar to it. It is noteworthy that less than 
half the plants of the Seymour Islands have as yet been found upon 
Indefatigable, near as it is ; indeed the common element is considerably 
greater with the much more distant islands of Charles, Chatham, and 
Albemarle. Halophytes form a noteworthy part of the vegetation of 
the Seymour Islands. 
Tower IsLANpD. 
Tower is a small triangular island some 3 km. in breadth. It lies = 
the northeast of the main archipelago and is nearest Bindloe, which 18 
