EXPLANATION OF PLATE XXXL 



Fig. 



7fl Belemnites Owenii, var. Puzosianus. Specimens from the Oxford Clay of 

 St. Neot's, presented by Mr. J. F. Walker. 



/, full-sized specimen seen laterally ; f', middle-sized individual, showing the 

 apicial groove distinct; v" , younger individual seen ventrally, with its 

 apicial groove ; side view of the same ; v" , still younger example 

 seen ventrally ; and /"', seen laterally. 

 77. Belemnites Owenii, var. verrucosus. From St. Neot's, presented by Mr. 

 J. F. Walker. 



v , seen ventrally ; laterally ; d' , dorsally ; s , cross section in the alveolar 

 region. 



