FISH-REMAINS OF THE CARBONIFEROUS ROCKS. 91 



spines of OracantJuis were different parts of the same fish. 

 Mr. R. Etheridge, junr., has given the arguments in favour 

 of their being associated with Psainmodus. Polyrhizodns 

 (one of the Petalodontidw) has been suggested in like con- 

 nection ; but teeth of this genus are not found in the Bristol 

 limestone, while Oracanthus spines abound. The type speci- 

 mens of two species, 0. Miller I and O-inistulosits^ are in the 

 Bristol Museum. 



It now only remains to add a list of the species of teeth 

 and spines which have been found in the Bristol limestone. 

 A capital T has been placed after the names of those species, 

 type specimens of which are preserved in the Bristol 

 Museum. It will be seen at a glance how rich that collection 

 is in type specimens of these interesting fish-remains. 



TEETH. 



Cladodontidci'. 



Cladodus marginatus (conicus) (Ag) (mirabilis McCoy), T. 

 Cochliodontidcc. 



Streblodus Egertoni (Ag. MS.). 

 Psej^liodus Isevissimus (Ag.), T. 



„ magnus (McCoy). 



Chomatodus cmctus (Ag.), T. 

 Tomodus convexus (Ag. MS.), T. 

 Deltodus gibbus (A. Smith Woodward), 

 Delto^jtychius gibberulus (Ag. MS.). 

 Xystrodus Egertoni (J. W. Davis). 

 Sandalodus Morrisi (J. W. Davis), T. 

 Helodus turgidus (Ag.), T. 

 Cestraciontidte. 



Orodus cinctus (Ag.), T. 

 „ ramosus (Ag.), T. 

 „ sculptus (J. W. Davis), T. 

 Petalodontidcc. 



Petalodus linearis (Ag.), T. 



,, recurvus (J. W. Davis). 



,, acmninatus (Ag.), (Hastingsise [Owen]). 



