1923 



TYPE AMMOMTES~IV 



CCCLXXI 



Fis. I 



Fig. 2 



Macrocephalites sp. 



"Troll, near Thornford, Dorset"; Fullers' Earth Rock 



Thornford Beds. Troll §, 7, or j-cf : S.B., ex J.B.. Coll. 1927 



S. 60, 41, 69, 25 ; 92. 40. 55, 27 : ribs c. ^2 ; max. c. 105 



PLEUROPHORITES POLYPLEURUS. S. Bickman. iq2i. Ill, 47 

 Tulitan, Plcnroplioritcs ; Holotvpe. See CCCLXX 



