

PLATE V. 



Figs. 1 4. ENDOTHYRA BOWMANI, Phillips. (Page 92.) 



Figs. 1, 2 a lateral, 2 b periphero-lateral aspect. English Carboniferous 

 specimens. Magnified 50 diameters. 



Fig. 3. Subcarboniferous specimen from Southern Indiana. X 30 diam. 

 Fig. 4. Horizontal section. X 50 diam. 



Figs. 5, 6. ENDOTHYRA AMMONOIDES, Brady. (Page 94.) 



Fig. 5. a lateral, b periphero-lateral aspect. X 60 diam. 



Fig. 6. Portion of horizontal section, from a photograph, x 100 diam. 



Figs. 7 9. ENDOTHYRA GLOBULUS (d'Eichwald}. (Page 95.) 



Fig. 7. a lateral, b periphero-lateral aspect. X 50 diam. 



Fig. 8. Young specimen. X 50 diam. 



Fig. 9. Cast of interior of a large specimen. X 50 diam. 



y Figs. 10 12. ENDOTHYRA RADIATA, Brady. (Page 97.) 



Figs. 10, 11 a, 12. Lateral aspect. 11 b. Periphero-lateral aspect. X 50 diam. 



Figs. 13, 14. ENDOTHYRA MACELLA, Brady. (Page 98.) 



Fig. 13. a lateral, b periphero-lateral aspect. X 30 diam. 

 Fig. 14. Smaller specimen, x 50 diam. 



- Figs. 15 17. ENDOTHYRA CRASSA, Brady. (Page 97.) 



Fig. 15. Lateral aspect. 



Figs. 16, 17. Anterior and posterior peripheral aspects. The three drawings 

 of this species are from different specimens. X 30 diam. 





