PLATE XV. 



SUBULITES VENTRICOSUS, HaLL. 

 Page 398. 



Fig. 1. View of an individual of this species, somewhat restored in the upper part. 



LOXONEUA LED A, HaLL. 

 Page 398. 



Pig. 2. Figure from a gutta-percha cast taken in the natural mould ; faint remains of indistinct 

 transverse striae are visible. 



EUNEIIA? TRILINEATA, HaLL. 

 Page 397. 



Fig. 3. Figure taken from a gutta-percha cast of the natural mould in the rock. 



Cylonema? elevata, Hall. 



Page 391. 

 Fig. 4. View of a cast of this species. 



r 



Trocmonema {Cyclonema?) pauper, Hall. ■ 



Page 395. 



Fig. 5. View of the aperture, taken from a gutta-percha cast made in the natural mould. 

 " 6. Basal view of the same specimen as fig. 5, showing the umbilicus. 

 " 9. A small internal cast of this species. 



Trocsonema {Eunema) fatua, Hall. 



Page 894. 



Fig. 7. View of an internal cast of this species. 

 " 8. The figure is from a gutta-percha cast, and shows the longitudinal stride very perfectly. 



Pleurotomaria (Trocsonema) soyi, Hall. 



Page 393. 

 Fig. 10. View of a cast of this species. 



Pleurotomaria occidens, Hall. 



Page 392. 



Fig. 11. Lateral view of a specimen of this species, which preserves a portion of the surface. 

 " 12. View of the spire, taken from a gutta-percha oast in the natural mould. 



Pleurotomaria halei, Hall. 



Page .392. 



Fig. 13. View of the spire of a cast of this species. 

 " 14. The elevation of the spire. 



. Pleurotomaria idja, Hall. 



Page 393. 

 Figs. 15, 16. Vertical and lateral views of a cast of this species. 



