124 



MIALL: ON MEGALICHTHYS. 



Some further anatomical details, of interest only to special students, 

 are to be found in the description published in the Quarterly Journal 

 of the Geological Society for August, 1884 (xl., 347-352) from which, 

 by permission of the Society, the figures here reproduced have been 

 taken. 



Fig. 6. — Anal fin of Megalichthys Hibberti, the very convex surface 

 represented as plane (one-half natural size). 



b. Basal scales. 



Other specimens of Megalichthys, and in particular the fine skull 

 previously obtained for the Leeds Museum, yield full information 

 respecting the outward form and component bones of the skull. It 

 is further known that the teeth were unequal, very large teeth occurring 

 at regular intervals in the rows of small teeth which beset the jaws. 

 Two patches of small teeth occupied the roof of the mouth. The 

 vertebrae were incompletely ossified, and in the fossil state form 

 rings of bone with attached processes, the central part having been 

 cartilaginous and incapable of preservation. 



Naturalist, 



