82 CETACEA. 



to the same species as the smaller type tooth. The close resemblance 

 existing between the remains noticed below and the corresponding- 

 elements of the skeleton of G. melas indicates the near affinity of 

 the two forms. Some unnamed vertebrae in the Brussels Museum 

 probably belong to this species. 



Hob. Europe (England and [?] Belgium). 



46754. An anterior tooth, agreeing with one of the type-specimens 

 figured by Lankester, op. cit. pi. viii. fig. 12, and corre- 

 sponding in size with the first two teeth of G. melas ; 

 from the Hed Crag. ' PurcJiased, 1875. 



43402. Two hinder teeth ; from the Eed Crag. These specimens 



correspond with the teeth figured by Lankester, op. cit. 

 pi. viii. figs. 14-18 as D. orcoides, and are slightly larger 

 than the hinder teeth of G. melas, although otherwise in- 

 distinguishable \ Purchased, 1872. 



44632. A very similar tooth, but with a straighter root ; from the 

 Red Crag of the Butley Eiver, Suffolk. Purchased, 1873. 



43403, 44609-10, 46753. Eour teeth of the same type as the pre- 



ceding ; from the Red Crag of Suffolk. Purchased. 



36657. The associated left periotic and tympanic ; from the Coral- 



{Fig.) line Crag of Orford, Suffolk. The periotic (woodcut, 



fig. 17) has been described and figured by the present 



Fig. 17. 



Glohicephalus uncidens. — The left periotic ; i'rom the Coralline 

 Crag of Orford. |. 



^ The crowns of these teeth present considerable resemblance to the canines 

 of certain Seals ; their Cetacean nature is, however, indicated by the frequently 

 irregular root, by the absence of a distinct curve in the whole tooth and of 

 antero-posterior ridges on the crown. Seeing, moreover, that molars of Seals 

 are not recorded from the Crag, it would be very strange to find such a large 

 number of canines. 



