Fig. 1. 
Ae. 
4 f; 
4h. 
44, 
4k, 
PLATE 40 A. 
245. 65.' Bucania PUNCTIFRONS. (Pag. 187.) 
. Dorsal view of a small specimen. 1b. Lateral view, showing the umbilicus. 
. Dorsal view of a larger specimen, showing the elevated carinal band, which does not rise above the sur- 
face on the lower part of the shell. 
Lateral view of another specimen, showing the side of the shell, which is obtusely angular, with obscure 
longitudinal ridges. 
. A portion of the surface enlarged. 
246. 1. CyrroLiTEs CoMPRESSUS. (Pag. 188.) 
. Lateral view of a specimen, having the sinuous lamelle at the ordinary distance asunder. 
. Dorsal view of the same. 
. Lateral view of a specimen, where the elevated lamelle are more distant. 
. Lateral view of another, showing the lamell closely arranged. 
. A cast, which is smooth, with the exception of the elevated carina. 
. A portion of the surface enlarged, showing the finer transverse and longitudinal stria, and the subnedu- 
lose appearance of the surface. 
247. 2. CyRTOLITES TRENTONENSIS. (Pag. 189.) 
b. View of the upper surface of two individuals. 3 ¢. Lower surface of the same. 3 d. Dorsal view. 
249. 1. TrRocHoLITES AMMONIUs. (Pag. 192.) 
. A small perfect specimen, showing the lamellose striz in great perfection. 
. A large specimen, preserving the lamellose surface. 
. Dorsal view, showing the archings of the striae upon the back. 
. A specimen denuded of the shell, showing the septa and deep outer chamber. 
Section, showing the position of the siphuncle. 
g. Lateral and dorsal view of a fragment of an inner volution, showing a slight undulation of the septa 
on the back. 
Lateral view of a fragment partially denuded of the shell, showing only the oblique transverse ridges. 
Dorsal view of the same, showing the arching of the striz upon the back. 
Section of the same, showing the position of the siphuncle. 
