EXPLANATION OF PLATE XXXIV. 



Fig:. 



84. Laro-e specimens of Belemnites abbreviatus, from the Coralline Oolite of 



Yorkshire and Wiltshire. 



/'. Side view, showing a broad lateral depression, and the incurved apex ; 

 v , ventral aspect, showing a flattening near the apex. The specimen 

 is from Malton, in Yorkshire. 



^. Showing the phragmocone in situ, and the numerous septa, at right angles 

 to the axis. The specimen is from the Calcareous Grit of Seend, in Wilt- 

 shire. The drawing was made by Miss Anne Cunnington. 



■s'. One of the septa seen axially ; s", cross section of the alveolar region ; 

 s", cross section behind the alveolus ; s"" , section near the apex, to show 

 the compression. 



85. Younger individuals from Hcddington, near Oxford, and Malton, in Yorkshire. 



/". Middle-aged specimen seen laterally ; s" , alveolar section of the 

 same. 



Specimen seen ventrally, with distinct apicial depression ; v" , smaller 

 example, a little hastate ; y", the youngest observed. 

 /"', A very young specimen seen sideways, a little hastate. 



