PLATE CIV. 



Gyroceras Cyclops. 



Page 387. 



See Plates 101, 103, 103. 



Fig. 1. Lateral view of a large, nearly entiie individual, preserving the test on some portions of the surface, 



and showing the lainellose expansions extending into the matrix on the concave doraal side. 

 Fig. 2. A transvei-se section of another individual, showing the convex side vt the septum and the position 

 of the siphuDcle. 



