PLATE IV. 



Ammonites Stoliczkanus, G-abb, var. spiniferus (page 24.) 



Figure 1. A broken but nearly adult example, drawn in such a position as to show 

 the depth and abrupt truncation of the inner edge of part of the 

 body whorl. 



Ammonites Loganianus. Form A. (page 29.) 



Figure 2. Side view of the only spcicimen in the collection. 

 " 2 a. Front aspect of the same. 



