60 



CETACEA. 



straight throughout their length ; the grooving of the enamel is 

 coarser than in the preceding s^Decies. 

 Bab. Europe (Belgium and (?) England). 



44109. A rolled tooth, with the inferior extremity broken oft and a 

 portion of the cement chipped away, provisionally referred 

 to this species ; from the Eed Crag of Woodbridge, 

 Suffolk. In the form of the dentine core this specimen 

 agrees very closely with the one figured by Van Beneden 

 and Gervais in the ' Osteographie des Cetaces ; ' but as the 

 enamel (if ever present) has been at least in great part 

 worn away, it is not certain that it may not have belonged 

 to Eucetus ; it is noticed by the writer in the ' Quart. Journ. 

 Geol. Soc' vol. xliii. p. 14. Purchased, 1873. 



Genus HOPLOCETUS, Gervais \ 



As already mentioned, this genus was considered by its founder ^ 

 as identical with Balmnodon. The teeth have very short crowns, 

 covered with a thin coat of grooved enamel ; the root is extremely 

 long in proportion to the crown, generally tumid in the middle, and 

 the layer of cement of great thickness ; the crown is separated from 

 the root by a constriction. The genus occurs in the Tertiaries of 

 both Europe and America. 



Hoplocetus crassidenS) Gervais^. 



The teeth are fusiform, with a slight arcuation and a flattening of 

 the root on one side ; the root is of great relative thickness. The 

 species was originally described from the Middle Miocene of Eomans 

 (Drome), France. 



Hah. Europe (France, Germany ^, Malta, and England). 



24596. A tooth, wanting the upper part of the crown and the 

 extremity of the root ; from the Middle or Lower Miocene 

 of Malta.* This specimen agrees precisely with the type 

 specimen figured by Gervais in the ' Zoologie et Paleon- 

 tologie Frangaises,' pi. xx. fig. 10, and the ' Osteographie 

 des Cetaces,' pi. xx. fig. 26. Purchased, 1850. 



1 Zool. et Pal. Fran9aises, 1st ed. vol. i. p. 161 (1848-52). 



2 Ost6ographie des Cetac6s, p. 345, 



^ Zool. et Pal. Fran9ai8es, loc. cit. (1848-52). 



* See Probst, Jahresh. Ver. Nat. Wiirtt. 1886, p. 106 



