EXPLANATION OF PLATE XX. 



Fig. 



50. Belemnites elegans. 



/. Lateral view of a specimen in the Whitby Museum, " No. 967, Robin Hood's 

 Bay, north side." 



/'. Lateral view of a specimen in Collection of Prof Phillips. Huntcliff. 

 d, V. Dorsal and ventral aspect of the same specimen. 



I" . Lateral view of a specimen in the Whitby Museum, " No. 458, Robin Hood's 



Bay." 

 •s. Transverse section. 



s. Longitudinal section of a specimen in Prof. Phillips's Collection. Robin Hood's 

 Bay. 



51. Belemnites scabrosus, n. s. 



/. Lateral view of a specimen in the Whitby Museum, " No. 976." From north 

 side of Robin Hood's Bay. 

 d, V. Dorsal and ventral aspects. 



53. P./. Belemnites CYLiNDRicus. Lateral view of a specimen from Rosedale (near 

 Staithes), in beds below the Jet-rock. 

 P. V, P. d. Ventral and dorsal view^ of the same. 



52. M./. Belemnites paxillosus. 



M. /. Ventral aspect of a specimen from the marlstone of Ilminster, in the 

 Collection of Mr. Moore. (The figure should have been marked M. v. ; 

 the slight seeming ventral groove near the apex is an accidental effect of 

 the shading.) 



