PLATE 65. 
Fig. 1. 661. 5. CoNULARIA NIAGARENSIS. (Pag. 294.) 
1 a. A fragment of a small specimen preserving the shell in great perfection. 
1 b. An enlargement of this surface, showing the character of the strife and intermediate spaces. 
1 c. An impression of the exterior of a similar specimen, where the depressions between the striae are 
distinct, and show the longitudinal striae, with the narrow punctured depressions between. 
1 d. An enlargement of the same. 
1 c. The interior of the shell of a large specimen, showing the characters of the preceding, but proportionally 
stronger. 
1 f. An enlargement of the same. 
1 g. A cast of the interior, from near the base of-the shell. 
1 g f. An enlargement of the surface of 1 g. 
1 h. The interior of a shell, showing only transverse ridges, except at intervals where broken. 
Fig. 2. 662. 6. Conularia longa. ( Pag. 295.) 
2 a. A part of a large individual, showing one obtuse angle, with the strong channel, and a part of each of 
the adjoining sides. 
2 b. A portion of the same enlarged. 
2 c, d. A fragment of another individual, and an enlargement showing the character of the mould. 
Fig. 3. 660. 37. Orthoceras undulatum. ( Pag. 293.) 
A fragment of this species from near the aperture. 
Fig. 4. 658. 35. Orthoceras cancellatum. ( Pag. 292.) 
4 a, b. An impression of the exterior of this species, in iron pyrites, in which the sharp strire are well pre¬ 
served. 
