PLATE XXXII. 



Opalinum-zone (Moorei-beds). 

 Figs. 1 — 12. — Geammoceras aalense {Zieten). 



Fig. 1. — Side view of a very fine adult example with its test well preserved and 

 showing the shape of the mouth-border, though the edge is not quite perfect and 

 the ventral process is not complete. Frocester Hill (Coaley Peak). My Collection. 

 (Page 192.) 



Fig. 2. — Front view of the same specimen. 



Fig. 3. — Side view of a young example, showing the complete mouth-border 

 with its elongated lateral process. Frocester Hill (Coaley Peak). My Collection. 



Fig. 4. — Side view of another form with a portion of test preserved. Frocester 

 Hill (Coaley Peak). My Collection. 



Fig. 5. — The sharp ventral area of the whorl in outline. 



Fig. 6. — The suture-line of the same specimen. 



Fig. 7. — Side view of a form showing the early accession of the smooth or 

 senile stage. Test complete. Frocester Hill (Coaley Peak). My Collection. 



Fig. 8. — Front view of the same form. 



Fig. 9. — Side view of another form with single ribs in the inner whorls, causing 

 it to appear like Gramm. lotharingicum. From towards the upper part of the Yeovil 

 Sands at Burton-Bradstock Cliff. Collection of Mr. W. H. Hudleston, F.R.S. 



Fig. 10. — The aperture in outline. 



Figs. 11, 12. — Geammoceras sp. 



Fig. 11. — Side view of a variety with single and equal ribs apparently much 

 like the figure given by Yacek of Harpoceras fiuitans (" Oolithe Cap San Vigilio," 

 ' Abh. k.-k. geol. Reichsanstalt,' Bd. xii, No. 3, Plate IX, fig. 6). The test and the 

 centre are wanting. Haresfield Hill. My Collection. (Page 191.) 



Fig. 12. — Front view of the same specimen. 



