70 CETACEA. ' 



The majority of the undermentioned specimens helong either to the 

 present or some of the following species; they ivere all obtained 

 from the Bed Crag of Suffolk. 



M. 3537. Cast of the left periotic. The original (woodcut, fig. 14) 



Fig. 14. 



'on hngirostris. — The left periotic ; from the Eed Crag of ■ 

 Woodbridge. \. 



is from Woodbridge, and is preserved in the Museum of 

 Practical Geology, Jermyn Street ; it is described and 

 figured by the present writer in the ' Quart. Journ. Geol. 

 Soc' vol. xliii, p. 15, pi. ii. fig. 8. This specimen agrees 

 almost precisely with the periotic of Meso])lodon australis, 

 and shows the marked concavity of the anterior tympanic 

 facette, which is wanting in the periotic of Choneziphius ; 

 the accessory ossicle on the posterior portion of the tym- 

 panic surface has disappeared. 



Made in the Museum, 1886. 



43526. The middle portion of the mandible, showing the hinder' 

 extremity of the symphysis and portions of the rami. The 

 specimen agrees very closely with the corresponding por- 

 tion of the mandible of M. australis. Purchased, 1872. 



45993. The eighth (?) caudal vertebra. This specimen is rather 

 smaller than the eighth caudal of M. australis, but other- 

 wise agrees very closely. Purchased, 1874. 



43183. An early caudal vertebra, much perforated by mollusks ; 

 from Palkenham. 



Wciherell Collection. Purchased, 1871. 



44036. A rolled middle caudal vertebra. This specimen indicates 

 a smaller individual than an adult M. australis. 



Purchased, 1873. 



