FOSSIL MAMMALIA. 149 



mer. This rib entirely resembles that of a small whale ; it was 

 found two leagues from the sea, in a sandy stratum, at a depth 

 of twelve feet. 



An enormous shoulder-blade was taken from the lake of 

 Geneva, which^ to all appearance, had belonged to a rorqual. 



A radius, disinterred in the neighbourhood of Caen, though 

 destitute of its epiphyses, exhibits the proportions and forms of 

 the radius of a whale. 



But all these last-mentioned fragments, though giving addi- 

 tional demonstration to the existence of the cetacea among the 

 fossils, afford no positive indication of the species to which 

 they belonged, whether living or extinct. 



It is sufficient to draw the reader's attention to the better- 

 determined specimens we have already noticed, and the incon- 

 testable result which flows from them. This result is, that all 

 the marine mammifera collected in the strata, and whose spe- 

 cies it has been possible to characterise, do not differ less from 

 their existing congeners in our seas, than the fossil land animals, 

 of which we have previously treated, do from theirs. Nay, we 

 may go farther and say, that they differ very sensibly from all 

 the cetacea that have been observed up to the present time in 

 every sea. 



Thus, the lamantin of the neighbourhood of Angers is not 

 only of a genus foreign to our climates, but of a different 

 species, both from the lamantins of Africa and America, and still 

 more so from those animals of the Indian and Pacific oceans, 

 which had hitherto been deemed as approximating to this genus. 



The dolphin again, with long symphyses, disinterred by M. 

 de Borda, is entirely unknown among the numerous species of 

 this genus described by naturalists. The dolphin with narrow 

 muzzle, of the environs of Angers, and the dolphin with broad 

 muzzle, discovered by M, Cortesiin Lombardy, though much 

 less remote from the living congeners, are yet distinguished 

 from them by characters of a nature perfectly specific. 



The same may be said of the rorqual of Lombardy, for the 



