58 



Scaldicetus carreti, Du Bus ' . 



The type species. 



Hab. Europe (Belgium). 



M. 3658. Cast of a tooth. The original, which is from the Antwerp 

 Crag, is preserved in the Museum at Brussels. The pulp- 

 cavity is still open. 



Presented by E. T. Newton, Esq., 1887. 



Genus BAL3NODON, Owen 2 . 



Of uncertain affinities. Identified by the present writer in the 

 ' Quart. Journ. Gcol. Soc.' vol. xliii. p. 14, with the preceding genus, 

 but later observations tend to render this very doubtful ; it has been 

 identified by Gervais with Hoplocetus. 



Balaenodon physaloides, Owen 3 . 

 Hob. Europe (England). 



27862. The lower portion of an imperfect tooth ; from the Ked Crag 



(Fiy.) of Felixstowe, Suffolk. This specimen is the type, and 



is described and figured by Owen in the ' British Fossil 



Mammals and Birds/ p. 525, figs. 119, 226, 227, where 



it is regarded as a complete section of a tooth and the 



external layer described as cement and the axis as dentine. 



Presented by John Brown, Esq., 1852. 



Genus PHYSODON, Gervais 4 . 

 Syn. Pakeodelphis, Du Bus s . 



The teeth of this genus indicate animals much inferior in size to 

 the Cachalot. The whole tooth is subcylindrical and frequently 

 curved ; the crown is comparatively short and coated with a finely 

 grooved enamel, and the layer of cement is generally of considerable 

 thickness ; there is no constriction at the base of the crown, which 

 is larger than in Hoplocetus. The teeth sometimes present a con- 

 siderable resemblance to those of some of the larger Seals, but are 

 readily distinguished by the thickness of the cement, which fre- 

 quently splits off in the characteristic Cetacean manner, and exposes 

 the dentine core marked by the peculiar horizontal lines. 



Bull. Ac. E. Belg. s6r. 2, vol. xxiv. p. 568 (1867). 

 British Fossil Mammals and Birds, p. 536 (1846). 

 Loc. cit. 



Bull. Soc. G6ol. France, ser. 2, vol. xxix. p. 101 (1872). 

 Bull. Ac. E. Belg. s6r. 2, vol. xxxiv. p. 503 (1872). 



