EXPLANATION OF PLATE XXXIIL 



Fig. 



82. Belemnites spicularis, n. s. 



Specimens from Sliandwick and Eathie, on the coast of Cromarty, collected 

 by Lieut. Patterson ; ventral aspect of one of the larger specimens, showing 

 the apicial groove ; /, lateral view, showing the long side flattening, and a 

 trace of short apicial grooves ; d, the dorsal aspect, marked by some small 

 striae ; /', one of the youngest specimens in Lieut. Patterson's series ; s, cross 

 section of guard at the alveolar apex ; s . section of a smaller specimen 

 toward the apex ; s' , still nearer the point. 



83. Belemnites obeliscus, n. s. 



Specimens collected by Lieut. Patterson at Shandwick and Eathie ; one of the 

 longest examples, seen sideways; /", one somewhat smaller, /"', still smaller, 

 and one of the smallest observed ; v" , ventral aspect of a small specimen, 

 and of a still smaller ; .s', alveolar cross section ; post-alveolar section 

 across the guard ; s'", farther backward in the guard. 



