EXPLANATION OF PLATE XXXV. 



Fig. 



86. A specimen of Belemnites abbreviatus (seen laterally), compressed, and 



unusually bent at the apex; Heddington. 



87. Section of Belemnites abbreviatus, with the phragmocone in situ. The 



bending of the axial line of the guard is not often so remarkable as in this case, 

 even in old specimens ; it is characteristic of full growth. 



88. A specimen with less curvature at the point, and less flexure of the axial line. 



From the Drift of Finchley, in Mr. Wetherell's collection. 



89. Natural section to show the decay of the axial laminae at their apex ; Bullington, 



near Oxford. 



The following figures are taken from specimens in the Collection of Mr. 

 Wetherell, from the Drift at Finchley. 



90. Section showing the formation of an axial canal and a vicinal fissure on the 



ventral side. 



91. Section of another specimen. 



92- Other sections, in which a small collateral ventral slit appears in the laminae. 

 93. Section in which the canal appears interrupted. 



m , m , 111." , m" . Magnified views of the laminae in relation to the canal. 



