PLATE CIV. 
Gyroceras Cyclops. 
Page 387. 
See Plates 101, 102, 103. 
Fig. 1. Lateral view of a large, nearly entire individual, preserving the test on some portions of the surface, 
and showing the lamellose expansions extending into the matrix on the concave dorsal side. 
Fig - . 2. A transverse section of another individual, showing the convex side of the septum and the position 
of the siphuncle. 
