66 THE AMERICAN NATURALIST. (VoL. XXXIV. 
to the natural history of Bering Sea. It was prepared under Dr. Jordan’s 
direction, under the editorial supervision of Mr. Frederic A. Lucas. It 
contains the following articles, most of them fully illustrated: 
I. * The Main Divisions of the Pinnipedia,” by Mr. Lucas. In this 
paper the distinctions between the Otariidea, or eared seals (with the wal- 
rus), and the Phocoidea, or true seals, are fully developed. 
2. “ The Species of Callorhinus, or Northern Fur Seal," by Dr. Jordan 
and Mr. George A. Clark, Secretary to the Commission. In this paper 
three closely related species or subspecies are indicated and named, corre- 
sponding to the three well-known herds. These are Callorhinus ursinus ` 
(L), the fur seal of Komandorski, Callorhinus alascanus, the fur seal of the 
Pribilofs, and Callorhinus curilensis, the fur seal of Robben Island and 
the Kuriles. As the differences are slight, these may well be regarded as 
subspecies, but from the nature of things they do not intergrade. The 
generic name Callorhinus is retained as sufficiently distinct from the earlier 
Callorhina, the two words being spelled differently. Those who hold other- 
wise may call the fur seal Callotaria Palmer. 
“ Variations in Size and Color of the Fur Seal,” by Mr. Lucas. 
* Dentition of the Fur Seal," by Mr. Lucas. 
4 Anatomy of the Fur Seal," by Robert E. Snodgrass. 
* Brain of the Fur Seal," by Dr. Pierre A. Fish. 
* Breeding Habits of the Fur Seal," by Mr. Lucas. 
“Food of the Fur Seal," by Mr. Lucas. This is shown to consist 
mainly of the seal-fish (ZAZerobromus callorhini), a species of smelt 
hitherto undescribed, of the Alaskan pollock (Theragra chalcogramma), 
and of a squid (Gonatus amenus). Practically no species available as 
human food are commonly eaten by the fur seal. 
9. * Mental Traits of the Fur Seal," by Mr. Lucas. 
to. “ Causes of Mortality among Fur Seals," by Mr. Lucas. 
11. “Internal Parasites of the Fur Seal," by Charles Wardell Stiles 
and Albert Hassall. Of these’ the most important is the strongyle worm, 
Uncinaria, which destroys large numbers of the seal pups on the sandy 
rookeries on St. Paul. The eggs of this worm lie in the sand, adhere to 
the fur of the mother, and are swallowed by the young. Most of the rook- 
ery ground is rocky, but on sandy tracts, as on parts of Tolstoi and Zapadni 
rookeries, the mortality is very great, the pups affected dying of anazmia. 
In this paper fourteen species of Ascaris are described besides the Unci- 
naria and a small tapeworm. 
12. “The Beasts of the Sea," a translation from Steller’s original 
account by Professor Walter Miller. This remarkable work (De Bestiis 
Marinis), published in 1751, gives the first account of the sea cow, the sea 
otter, sea lion, and sea bear, or fur seal. 
13. “The Sea Bear,” a translation of an essay by Bishop Ivan Venia- 
minof, 1839, by Dr. Leonhard Stejneger. 
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