56 



has been described and figured by the writer in the ' Quart. 

 Jouru. Geol. Soc.' vol. xliii. p. 13, woodcut fig. 2. In its 



Fig. 11. 



? Eucctws amblyodon. The left periotic ; from the Bed Crag of Felixstowe. |. 

 a, anterior articular facette for tympanic ; b, posterior articular ridge for 

 do. ; c, hollow for accessory ossicle; d, e, f, unnamed ridges and hollows; 

 g, capsule of semicircular canals. (From the 'Quart. Journ. Geol. 

 Soc.') 



somewhat produced posterior extremity it agrees much more 

 nearly with the corresponding bone of Hyperoodon than 

 with that of Physeter, but the median tympanic ridge is 

 broader and lower ; the anterior articular facette for the 

 tympanic has been partially abraded, and the accessory- 

 ossicle on the posterior half of the tympanic face is wanting. 

 Presented by John Brown, Esq., 1852. 



TJie following rolled and imperfect teeth from the lied Gray may 

 probably be referred either to the present or one of the allied 

 forms. 



28255. The dentine cores of two teeth ; from Felixstowe. 



Purchased, 1852. 



37724. The dentine core of a tooth with a fragment of cement on 

 one side. Purchased, 1863. 



39024. Part of the dentine core of a tooth. 



BowerbanJc Collection. Purchased, 1865. 



36653. Part of a tooth, wanting some of the cement. 



Brown Collection. Presented by Prof. Sir E. Oiuen, 



K.C.B., 1859. 



