PLATE LXXVIII A. 
Orthoceras procerus. 
, Page 249. 
See Plate 35, 79. 
Fgi. 1. An individual with more distant septa and larger apical angle than usual. Schoharie, N. Y. 
Fig. 2. A smaller septate fragment, with the. suture lines of t^ie septa somewhat oblique from pressure. 
The apparent constriction of the tube is only a break in the continuity of the substance. Scho¬ 
harie, N. Y. 
Fig. 3. A septum of preceding specimen, showing- the excentric siphuncle. 
Fig. 4. An individual retaining the longitudinal keel on the chambers, indicating the ventral side. Scho- 
harie , N. Y. 
Fig. 5. A septum showing the size and position of the siphuncle. An areola, shown on the specimen, is not 
represented. 
Fig. 6. A small, compressed, chambered fragment, with the septal sutures somewhat curved; due to the 
compression. 
Fig. 7. A septum of preceding specimen showing the siphuncle participating in the general compression. 
Fig. 8. Longitudinal section of an individual. No traces of the siphuncle can be observed. The raised 
areola on the septum, around the siphuncle, is shown in section at the lower extremity. 
