PLATE XCV. 



Concavum-zone. 



Fig. 1. — Sonninia dominans, 8. Buckman. 



Fig. 1. — Outline of the whorl-section of the specimen depicted in PI. XCIV, 

 fig. 1. (Page 435.) 



Fig. 2. — Sonninia dominatrix, 8. Buckman. 



Fig. 2. — Outline of the whorl-section of the specimen depicted in PI. XCIV, 

 fig. 3. (Page 392.) 



Figs. 3 — 5. — Sonninia modesta, S. Buckman. 



Fig. 3. — Side view of the type-specimen alluded to in page 326. The central 

 whorls are damaged. Reduced to one-half natural size. Bradford Abbas. From 

 my father's Collection. (Compare PL LXVIII and PI. XCVI, figs. 1, 2.) 

 (Page 422.) 



Fig. 4. — Outline of the front view to show the whorl-section restored as if test 

 all over, and the size of the fairly distinct carina. 



Fig. 5. — The ornate, rather involved septal margins ; L asymmetrical, the lateral 

 lobules very anisometric, the inner lobules much abbreviated, the terminal lobules 

 very anisosceloid. This drawing is a copy of a photograph. 



Figs. 6 — 8. — Sonninia sobsimplex, 8. Buckman. 



Fig. 6. — Side view reduced to one-half natural size. Bradford Abbas. My 

 Collection. (Page 427.) 



Fig. 7. — Outline of the front view reduced to one-half natural size, showing a 

 subcarinate ventral area. 



Fig. 8. — The somewhat ornate, somewhat involved septal margins ; L some- 

 what asymmetrical, but inner lobule not much abbreviated ; terminal lobule 

 somewhat anisosceloid. This drawing is a copy of a photograph. 



Figs. 9, 10. — Sonninia, sp. 



Fig. 9. — Side view of a young specimen showing plain costae in the earlier 

 whorls, and developing subbullicostge later. Bradford Abbas. My Collection. 

 (Page 440.) 



Fig. 10. — Outline of the whorl-section of the same shell. 



