MILLER AND REHN: NORTH AMERICAN MAMMALS. 195 



*Halichoerus grypus (Fabricius). 



1791. Phoca grypus FABRICIUS, Skriv. af naturh.-selsk., i, 



2, p. 167, pi. xm, f. 4. 

 1841. Halichoerus grypus NILSSON, Wiegmann's Arch. f. 



Naturg., vii, bd. i, p. 318. 

 1885. Halichoerus grypus TRUE, Proc. U. S. nat. mus., vn 



(1884), p. 607. 1885. 

 TYPE LOCALITY. Greenland. 



Genus MONACHUS Fleming. 



1822. Monachus FLEMING, Phil, zool., n, p. 187. Type. 

 Phoca monachus HERMANN. 



Monachus tropicalis (Gray). 



1850. Phoca tropicalis GRAY, Cat. seals Brit, mus., p. 28. 

 1866. Monachus tropicalis GRAY, Cat. seals and whales Brit. 



mus., p. 20. 

 1885. Monachus tropicalis TRUE, Proc. U. S. nat. mus., vii 



(1884), p. 607. 1885. 

 TYPE LOCALITY. Jamaica. 



Genus CYSTOPHORA Nilsson. 



1820. Cystophora NILSSON, Skand. fauna, i, p. 382. Type. - 

 Oystophora borealis NILSSON = Phoca cristata ERXLEBEN. 



* Cystophora cristata (Erxleben). 



1777. Phoca cristata ERXLEBEN, Syst. regni anirn., i, p. 590. 

 1841. Cystophora cristata NILSSON, Wiegmann's Arch. f. 



Naturg., vii, bd. i, p. 326. 

 1885. Cystophora cristata TRUE, Proc. U. S. nat. mus., vii 



(1884), p. 608. 1885. 

 TYPE LOCALITY. Southern Greenland and Newfoundland. 



