JUNE, 1901. LIST OK NORTH AMERICAN MAMMALS ELLIOT. 513 



Order viii. Pinnipedia, 



Fam. I. Otariidae. 



88. Eumetopias. Gill, 1866. 



PAGE. 



545. Eumetopias stelleri. (Less.) 355 



89. Zalophus. Gill, 1866. 



546. Zalophus californianus. (Less.) 356 



90. Callotaria. Palmer, 1892. 



547. Callotaria ursina. (Linn.) 357 



Fam. II. Trichechidae. 



91. *Tricheclms. Linn., 1766. 



548. Trichechus rosmarus. Linn 358 



549. Trichechus obesus. Illig 358 



Fam. III. Phocidae. 



Sub. Fam. I. Cystophorinae. 



92. MacrorMnus. F. Cuv., 1824. 



550. Macrorhinus angustirostris. Gill. . 359 



93. Cystophora. Mills, 1820. 

 55i- Cystophora cristata. (Erxleb.) 360 



* Three genera have been employed for the Walrus: Rosmarus, applied to it in the sixteenth 

 century by Gcsner, &c.; Odobaenus, Linnaeus in 1735, and Trichechus, Linnaeus in 1766. For 

 those who take the I2th edition of the Systema Naturae as the starting point, there is no difficulty 

 about a selection, for Trichechus is made to include both Walrus and Manatees, and as Manitus 

 was taken lor a genus ol Sirenians, Trichechus naturally becomes the term for the Walrus. It is 

 those who reject Linnaeus' more matured and completed edition of 1776, and select that of 1758 for 

 their starting point, that trouble begins, and they are obliged to search for a generic term. In the 

 loth edition Trichechus includes the Manatees, and the Walrus is placed among the seals in Phoca. 

 The edition of 1735 offers Odobaenus, passing over, however, to reach it, Rosmarus, employed for 

 the Walrus, as stated, in the sixteenth century, and used generically by Klein in 1751, and Scopoli 

 in 1777. Authors have at various times employed all of these terms, and there has been much dis- 

 cussion as to which should be preferred, but no agreement has been reached, and there is not likely 

 to be any until it is finally decided and accepted generally which edition of Linnaeus shall be the 

 starting point, and how many years previous to that shall genera be recognized, and what authors 

 shall be authorities for them. At present it would seem that the advocates for the i2th edition 

 have the best of the argument, for there appears no doubt as to their genus for the Walrus. Mana- 

 tus having been eliminated, aud as it may be said that probably the majority of Naturalists still 

 employ Trichechus, it would seem more advisable to continue that term, the one finally adopted 

 by Linnaeus himself, and also the one most familiar to all, than to select either of the others with 

 their contested claims. 



