By G. Poulett Scrope, Esq., MP. 107 
Fig. 21 (276). 
Fig. 23, (271) 
Pecten 5-costatus. 
Ostrea columba. Plagiostoma spinosum, Sow. White chalk, Upper, 
Syn. Gryphea columba. Syn. Spondylus spinosus. and Lower -green- 
Upper greensand. Upver white chalk. sands. 
Fig. 26 (261). 
Fig. 24 (268). hea 
Fig. 25 (264), 
Terebratula biplicata 
Sow. Upper Creta- Terebratula Defrancii. Scaphites equalis. Chalk and 
ceous. Upper Cretaceous. Upper Green sand. 
Fig. 27 (256). 
a 6 
a. Belemnites mucronatus. 
b. Same, showing internal structure. Upper and Lower chalk. 
Fig. 28 (255). Fig. 29 (254) 
f, Galerites albogalerus, Lam. Micraster cor anguinum. 
; White chalk. White chalk. 
; Fig. 30 (253). 
ok. 
Ananchytes ovatus. White chalk, upper and lower. 
, 
a. Side view. 
6. Bottom of the shell on which both the oral and anal apertures are placed ; 
anal being more round, and at the smaller end. 
