1910] Heller—Mammals: Alaska Expedition, 1908. 335 
ELLAMAR. 
The vegetation about Ellamar has much the appearance of 
that about Canoe Passage, Hawkins Island. The proportion 
of tundra and forest is about the same. On the flat country 
near the coast Sitka spruce predominates, but on the hillsides 
this tree is replaced by mountain hemlock which ascends the 
steep mountain sides to approximately 1200 feet. Above this 
the arctic alpine shrubs occur. Permanent snow fields are 
found farther inland where the ridges attain altitudes of more 
than 2000 feet. Many of the higher ridges about Ellamar are 
bare of vegetation on their summits. 
VALDEZ NARROWS. 
This indentation is walled in by steep mountains. Only a 
few spruce and mountain hemlock occur about the bay, a few 
hardy individuals which have found a foothold near the beach 
on level land. The cottonwood has pushed down the inlet to 
this point where the trees occur solitarily on hillsides among 
alder thickets, very unusual situations for these riparian trees. 
The hillsides are uniformly covered by a heavy growth of alders. 
These thickets hold the ground everywhere up to 1000 feet or 
more. Above the alder zone the normal arctic alpine plants 
occur in a narrow zone below the bared or snow-covered 
summits. Shoop Bay is formed by a lateral cleft in the north 
wall of Valdez Inlet a short distance above the Narrows. The 
bay has been scooped out by a glacier which has since retreated 
a mile or so inland but continues to give off small beres when 
the waters of the bay reach it at high tide. 
GENERAL ACCOUNTS OF THE MAMMALS, WITH 
DESCRIPTION OF A NEW EVOTOMYS. 
The small number of species of mammals occurring in the 
drainage basin of Prince William Sound is due apparently to 
its unfavorable climatic conditions. The heavy precipitation 
which prevails in the region has made it unfit for a large number 
of species found in close proximity, but inhabiting districts where 
