CEICK : ARMS OF THE BEIEMNITE. 279 



is the animal known as the Belemnite; (3) that the six uncinated 

 arms were arranged in three pairs of unequal length, of which the 

 longest pair was lateral, the medium- sized pair probably dorsal, and 

 the shortest pair probably ventral ; (4) that the presence of tentacular 

 arms is doubtful. 



EXPLANATION OF PLATE XXIII. 



Fig. 1. — Belemnites sp. Lias: Lyme Eegis, Dorset. In the British Museum 



(No. C. 3,007). (p. 274.) 

 2. — Belemnites sp. Anterior portion of the type-specimen of BelemnoteuDiis 



Montefiorei, J. Buckm. Lower Lias Shales: between Charmouth and 



Lyme Regis, Dorset. In the British Museum (No. C. 5,026). (p. 273.) 

 3. — Belemnites sp. Lower Lias : L}Tne Regis, Dorset. In the British Museum 



(No. 82,895). (p. 278.) 

 i.— Belemnites sp. Lias : Charmouth, Dorset. In the British Museum 



(No. 39,901). (p. 275.) 

 5. — Belemnites sp. Lias : Lj-me Regis, Dorset. In the British Museum 



(No. 47,020). (p. 277.) 

 6. — Belenmites sp. Lower Lias : Lyme Regis, Dorset. In the British Museum 



(No. 47,716). (p. 276.) 

 All the figures are about three-fifths of the natural size ; in figs. 1-5 only the cephalic 

 portion of each specimen is represented. 



