CXXXV1 



INFERIOR OOLITE AMMONITES. 



11. Cotteswoldia distans (S. Buchman). Plate XXXIII, figs. 1, 2; SuppL, Plate 



XXIII, fig. 8. 



1890. G-rammoceras distans, This Monogr., PI. xxxiii, figs. 1, 2; p. 196. 

 1902. Cotteswoldia distans, Emend. Amni. Norn., p. 3. 



Remarks. — In the figured specimen the ribs are distinctly joined near the 

 inner margin in two or three cases. The duplication of ribs towards peripheral 

 area, shown in the figure, is a mistake of the draughtsman. 



Locality and Stratum. — Gloucestershire : Haresfield Hill, Cephalopod bed, 

 upper part. 



Date of Existence. — Aide axis hemera. 



12. Cotteswoldia bifax, S.Buckman. Fio-. 110a in text. 



. 



..ttesa-oblin hi/,,,, 



side view ; b, section. 



Description: — Connaticostate, declining to subcostate and striate ; periphery 

 fastigate, passing on to become convex ; carina subdistinct, but failing where 

 periphery tends to convexity. 



Uemarlcs. — Costse are irregular in size, and tend to join on inner border. The 

 species is remarkable for the two distinct phases — costate and striate — both so 

 marked and well developed ; also for the great likeness to Dumortieria Moorei. 

 Therefrom, however, the laterally curved radial line with longer peripheral 

 projection distinguishes it. 



Locality and Stratum. — Gloucestershire: Buckholt Wood (Frocester), Cephalopod 

 Bed, Moorei (aalensis ? ) beds. 



Date qf Existence. — Moorei (aalensis?) hemera. 



