278 Wisconsin Academy of Sciences, Arts, and Letters. 
The shores support many of the smaller halophytic plants 
found on these islands, and ‘ ‘ large mangroves ’ \ probably Lagun- 
cularia racemosa, and Rhizophora Mangle, occur abundantly in 
places. The older lava around the base of the mountain is cov¬ 
ered with forms usually found in the dry regions. There are 
occasional specimens of an arborescent Cereus, and a low species 
of Opuntia occurs abundantly around the base, and on the sides 
of the mountain to an elevation of 1,600 ft. The trees in the 
lower regions are mostly of Erythrina velutina and Bursera 
graveolens, the last one of which was found to extend up to an 
elevation of 1,700 ft. on the side of the mountain. Many bushes 
and shrubs occur on the lower parts, but with the exception of 
Lipochaeta lariciTolia, the names of these are not known. They 
are probably all of species usually common on the lower parts of 
these islands. Beds of “maidenhair fern”, probably Adiantum 
Henslovianum, were found in a lava cavern at the base of the 
mountain. All together six species of ferns were noticed on this 
part of the island, but it is very likely that many more could be 
found if careful collecting were done in this region. Croton 
bushes are abundant, and occur to an elevation of 2,300 ft. as 
high as this mountain was explored by the members of the party 
who visited this part of the island. A “broad-leaved variety of 
Croton”, probably C. Scouleri var. grandifolius, occurs high up 
on the side of the mountain, and ‘ 1 small-leaved varieties of Cro¬ 
ton” occur around its base. There are one or more flows of re¬ 
cent lava down the west side of the mountain which are bordered 
by a heavy growth of bushes and morning glory vin$s around an 
elevation of 2,300 ft. Above this there are forests which are ap¬ 
parently made up of an arborescent species of Scalesia, and other 
trees. Orchids, and “sword ferns” were also noticed in the up¬ 
per regions visited. 
Tagus Gove. 
Tagus Cove is located on the wnst side of the island about op¬ 
posite the northeast corner of Narborough Island. It has been 
formed from and old tufa crater the southwest side of which has 
'been removed leaving a small and well protected bay inside. 
The inner walls of the crater form steep bluffs which surround it 
on all sides except the one open to the sea_. In some places these 
bluffs are 600 ft. high, but they are much lower than this towards 
the north end of the cove at which place a small ravine enters it. 
