﻿PLATE XXXIX. 



Fig. 

 1 . TrN/oiiia PeUati. Man. Glial. . O.vford Clay, St. Ives. See also PI. VII, figs. \,ia, b, 



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

 1 II, it. „ liiidlestoni, Lye. Coral Rag, Cawkley. Also PI. XXXIV, figs, -j, G. 



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

 ;}. „ irregularis, Seeh. Var. Kinimeridge Clay, Wotton Basset. The costae 



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

 (Page 39.) My collection. 

 4. „ Upwarensis, Lye. Neocomian formation, Upware, Cambridgeshire. 



See also PL XXIII, figs. S, 9. (Page 143.) Coll. .1. F. 

 Walker, Esq. 



