70 CETACEA. 



The majority of the undermentioned specimens belong either to the 

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

 from the lied Crag of Suffolk. 



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

 Fig. 14. 



Mesoplodon longirostris. The left periotic ; from the Red 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 tho periotic of Mesoplodon auslralis, 

 and shows the marked concavity of the anterior tympanic 

 acette, which is wanting in the periotic of ChonezlpJiius ; 

 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 rarai. The 

 specimen agrees very closely with the corresponding por- 

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



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

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

 wise agroes very closely. Purchased, 1874. 



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

 from Palkcnham. 



Weiherell Collection. Purchased, 1871. 



44036. A rolled middle caudal vertebra. This specimen indicates 

 a smaller individual than an adult M. australis. 



Purchased, 1873. 



