PLATE /.* 



Belemnites, Sp. ur.dt. (page 11.) 



Figure 1. Guard of the most perfect specimen yet obtained. See also wood-cut 

 No. 1. 



" 1 a. Phragmocone of another individual of the same species. 



" 1 b. Outline of transverse section of the original of figure 1, near the apex. 



" 1 c. Outline of transverse section of ditto, at the anterior or thickest end. 



Ammonites Breaverii, Gabb (page 21.) 



Figure 2. Side view of the largest example collected. Normal form, with faintly- 

 striated surface. 



" 2 a. Outline of aperture of do. The sides are represented as too straight 

 below, they should curve slightly inwards, from a little beneath the 

 middle of the whorl, to its base. 



" 3. Side view of a specimen of the dwarfed costate variety. 



" 3 a. Outline of aperture of the same. 



Unless there is a distinct statement to the contrarj', the figures in all the Plates are of natural size. 



