﻿PLATE XXXIX. 



Fig 



1. Trigonia Pellati. Mun. Chal. . Oxford Clay, St. Ives. See also PI. VII, figs. 1, 2 a, b, 



and PI. XI, fig. 1. (Page 41.) Coll. J. F. Walker, Esq. 

 I a, 2. „ Hudlestoni, Lyc. Coral Rag, Cawkley. Also PI. XXXIV, figs. 5, 6. 



(Page 194.) Coll. W. H. Hudleston, Esq. 



3. „ irregularis, Seeb. Var. Kimraeridge Clay, Wotton Basset. The costae 



are nearly without the irregularity of the figures upon PI. V. 

 (Page 39.) My collection. 



4. Vpwarensis, Lyc. Neocomian formation, Upware, Cambridgeshire. 



See also PI. XXIII, figs. 8, 9. (Page 143.) Coll. J. F. 

 Walker, Esq, 



