358 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [April 8, 



dicate, that at least a considerable part, if not the whole, of the *' Red 

 Crag " Cetacea are of the same age as the associated terrestrial 

 Herbivora. 



[Since the preceding pages were in type, I have had an opportu- 

 nity of examining specimens in some of the principal collections in 

 Essex, Suffolk, and Norfolk, which throw light upon some of the 

 points discussed above. In the Town Hall of Colchester there is a 

 fine specimen, comprising both maxillary bones of a young Elephas 

 {Eueleph^ antiquus, and presenting the last milk-molar (right side) in 

 place. The matrix is very ferruginous, and the bones and tooth are 

 of a dark-chocolate colour, with a vitreous polish. It was dredged 

 up from off the *' West Rocks " on the Essex coast ; and it resembles 

 in its mineral condition the large Cervine horn reputed to be from a 

 Crag-pit at Felixstow, and referred by Professor Owen to Megaceros 

 (see above, p. 354). 



In the rich and valuable collection of Red Crao; fossils belono-ing; 

 to William Whincopp, Esq., of Woodridge, there are two upper and 

 three lower molars of a species of Hippotherium from the Red Crag 

 pits at Sutton. They bear a close resemblance to the Miocene H. 

 gracile, Kaup, from Eppelsheim. The same collection contains several 

 molars, upper and lower, of the genus Rhinoceros^ one of which (an 

 upper antepenultimate milk-molar) agrees, in most of the characters, 

 with an original specimen of a corresponding tooth of Rhinoceros 

 Schleiermacheri from Eppelsheim, with which it was compared. Mr. 

 Whincopp also possesses an upper maxillary bone containing a series 

 of the molar teeth of Hyracotherium leporinum ; also detached 

 molars apparently of the smaller species, Hyrac. cuniculus, both said 

 to have been procured from the Red Crag at Felixstow. Besides 

 these, Mr. Whincopp possesses, first, several perfect Cetacean teeth, 

 resembling those referred to Hoplocetus by Gervais ; 2ndly, two re- 

 markable molar teeth of a form which has not hitherto been described 

 as a British fossil ; and, 3rdly, numerous remains of Red Crag Del- 

 phi nidce. 



In the rich collection of Edward Acton, Esq., of Grundisburgh, 

 there are specimens referable to both species of Hyracotherium, and 

 reputed to be from Red Crag localities in Suffolk, besides molars of 

 Tapirus and Rhinoceros. Mr. Acton also possesses a singularly 

 perfect antepenultimate true molar from the lower jaw of M. [Te- 

 tralophodon) Arvernensis, showing the peculiar characters of the 

 species strongly marked*. 



In neither of these collections did I observe any specimen refer- 

 able to M. (Tetraloph.) longirostris of Eppelsheim, nor to the pe- 

 culiar mammalian genera of the Upper Miocene period, enumerated 

 in a preceding paragraph as being usually associated with that spe- 

 cies (p. 355). It is manifest that the Hyracotherian remains must 

 have been derived from broken-up Eocene deposits ; and the teeth of 



* In Mr. Whincopp's collection there is a very beautiful specimen of an intact 

 germ of an antepenultimate upper milk-molar, from the Red Crag, closely re- 

 sembling the specimens figured by Croizet and Jobert. 



