PLATE VIII. 



Ammonites Loganianus. Form B. (page 30.) 



Figure 1. Side view, partly restored. 

 " 1 a. Front of the same specimen. 



Ammonites Loganianus. Type, (page 27.) 



Figure 2. The most perfect side of a crushed and distorted example of this species. 

 The wood-cut (figure 3, on page 28) showing the outline of the 

 aperture, is drawn from another individual. 



