PROVIXCIAL MUSEUM, HALIFAX, X. S. — PERKINS. 159 



thereto seciu tu be essciuially similar to the eorrespciuling pans 

 of the skeleton of the Beluga from Cornwall Pleistocene and 

 that of a recent specimen of the white whale from Metis in the 

 musenm of the survey." 



In Bulletin 179, U. 'S. Geological Survey, Mr. O. P. llav 

 e^niimerates seventy-eight species of fossil cetac^a. Most of 

 these species are not now living. Of the whole number, forty- 

 three are found in the ]\liocene, eleven in the Eocene, seventeen 

 in the Tertiary, epoch not stated,, and six in the Pleistocene. 

 There is oae species not assigned. Of the six Pleistocene 

 species, one found in Louisiana is a doubtful fossil^, Pltyseter 

 macroceplialus. Another, Pliyseter vetus, is from South Carol- 

 ina, one from Vermunt, Delphiuapterus vermontanus. one from 

 Alaska, Monodon monoceros, two from Canada, Delpliinapterus 

 leiicas and Megaptera hoops. To the above should be added the 

 Halifax specimen, that from Pakenham, and sundry isolated 

 bones found in Canada, all oi which are given in the foregoing 

 list. 



As many of the references given show, nearly all of 

 the Canadian specimens have been referred, by those geologists 

 who have had occasion to mention them, either to the living 

 Delpliinaplerus leucas or to Thompson's 1). vermontanus, 

 mostly to the former. 



In those s])ecimens which are very im])erfect, it is not 

 possible to determine as to the correctness of these identifica- 

 tions, since the resemblances, which always exist in most of the 

 bones of allied species of cetacea, are so close as to render separ- 

 ation useless. This Avould be emphatically true when only a 

 few vertebra^ were found. When the jieriotic is ]-)resent it 

 should be ])(is>ible to conu^ to more satisfact(jry (■< inclusions. 



Dr. Dawson says that tlie Cornwall specimen was compared 

 by Mr. Dillings with recent l)0ue3 of D. leucas. a'nd as a result 

 of this comparison ^li'. Hillings " concdudod that it belonged to 

 the modern species, and 1 I (dicve extended his conclusion to Mr. 



