7927 



TYPE AMMONITES— VI 



DCCVlB 



Fig. I 



Fig. 2 



Ammonites planicosta 

 Lyme Regis, Dorset ; Lower Lias, [planicosta bed] 

 S.B. Coll. 596, purchased ; bituberculate form 

 S. 36, 28, 42 (29), 51-5 ; 54. 28, 34-5 (30), 52 ; size c. 60 



XIPHEROCERAS BINODULATUM, nov. 

 Asteroceratan, planicosta ; Paratype. See DCXXXII 



