218 Proceedings of the Biological Society of Washington. 
the same sense as did Kafinesqne. Gervais in 1855 (in Castelnan Ex])ed. 
Amer. Sud. Mamm. j). (iO) refers to Tadarida as one of Kafinesqne’s ^enera, 
but without niention of place or date of publication. 
The type of Nyctinomus Oken, 18U), (-leoffroy, 1818, is aeyypti.acus, a 
species with four lower incisors; the ty])eof T’adarida.liathiesqneiHteniotis, 
a species with six lower incisors. Recent workers (IMiller, Bull. U. 8. 
Nat. Mas. No. 57, p. 251, 1907) do not consider these dill'erences of generic 
value. — 31. W. Lyon, Jr. 
Cl, 
INTERESTING MAMMALS ON THE PRIBILOF ISLANDS. 
On February 14, 1914, a polar bear was seen and shot at by an Aleut 
at Zapadni Rookery, St. George Island. The tracks were seen on shore 
in the snow by tlie writer and others. This animal was formerly an 
abundant inbabitant of the northern part of Bering Sea, Init rarely came 
south of St. Matthew Island. If native reports are to be believed, it bas 
been seen on St. Paul Island on at least three different occasions, but 
this was many years ago. From the same source of information comes 
the only previous record of the animal on St. George. This was about 
1820, when a bear came ashore from the ice pack at the village and went 
westward to a small pond where it spent some time on the ice. There¬ 
after this has been known as Bear Lake. The numerous tracks along 
the beach in the snow show that the bear seen at Zapadni had been 
ashore also. During the winter no drift ice had been sighted from the 
island. But this could not have been seen unless it bad come within ten 
miles. Hair seals had been common about the beaches but in no unusual 
numbers. 
During the month of March, 1914, walruses were sighted three different 
times swimming along just off shore. They Nvere at no very remote time 
abundant on St. George as the skulls may yet be seen about tbe beaches. 
Five dead ones floated in at Garden Cove about 1907. 
A sperm whale or cachelot came ashore at Zapadni Rookery April 14, 
1914. It was a male 47 feet long and had probably been dead a week. 
About five tons of the blubber were saved for fox food when the head and 
carcass floated away. Although other species of whales are abundant 
about the island, the cachelot had never been seen before by any of tbe 
Aleuts. — G. Dallas Hanna. 
