PLATE XXIV. 
Phylloceras umzambiense. 
Fig. i. Lateral view, x 1*87. 
,, 2. Half outline of transverse section at greatest diameter. Natural 
size. 
,, 3. Suture. Natural size. 
Gaudryceras amapondense. 
,, 4. Lateral view. Natural size. 
,, 5. Half outline of transverse section at diameter of 99 mm. 
Natural size. 
