Fig. 1. 
Fig. 2. 
HYBODUS DUBRISIENSIS, n.s., Mackie. 
From the Lower Chalk of Dover (Kent*, nat. size. 
[In the National Collection, British Museuir;.] 
Fig'. 1. Side View. Fig. 2. Base of Lower Jaw. seen from above. 
3. J. Mackie del. 
