﻿PLATE XXIX. 

 Fig. 



1, i, 3. Trigouiu denticulata, Ag. Inf. Oolite, grey limestone. Cloiightoii, near 



Scarborough. (Page 152.) My collection. 



4. „ „ Id. Small variety. Great Oolite, South Lincolnshire. 



My collection. 



5, 6, 7. S. „ costata, Sow. The typical form. Inf. Oolite, Bradford Abbas. 



(Page 147.) My collection. 

 9, lU. „ „ var. lata. Lye. Inf. Oolite. (Page 149.) Cotteswold 



Hills. My collection. 

 11, 12. „ J'ormosa var. lata. Lye. Inf. Oolite, Bradford Abbas. See also 



PI. XXXV, fig. 7. (Pages 35, 202.) My collection. 



