I 



1925 



TYPE AMMONITES— VI 



DCIV 



Fig. I 



Fig- 3 



Fig 2 



Ammonites rotundus 



" Hartwell, [Bucks] ; Lower Portland, Pebble Bed ; Hunt Coll." 



Blue-grey stone with rather large lydites ; " Bucks C. Mus. 108/25 



S- 53, 33. 32, 36 ; ribs 32 ; 68, 32, 32, 40 ; ribs 29, biplicate, zigzag 



S.l. 40, 37, 17 at I7'5. Diff. A. rotundus, arcuate, zigzag per. ribs 



PALLASICERAS LYDIANITES, Nov. 

 Paravirgatitan, lyditicus ; Holotype. See DXC 



