PLATE I. 



DEVONIAN SPECIES. 



Fig. 



1 — 8. ? Terebratula Sacculus, Martin, varr. Several modifications in shape. From the 



Middle Devonian Limestone of Barton 

 and Lummaton, near Torquay, Devon. 

 9. ,, olongata, Schl. ? Upper Devonian ? Brown grits of East Hill, 



Braunton, Devonshire. 

 10 — 15. „ juvenis, Sow. Different specimens from the Middle Devonian 



' Limestone of Barton and Lummaton. Fig. 13, 

 Sowerby's type ; Plymouth. Mus. Geol. Soc. 

 16, 17. „ Newtoniensis, Dav. Middle Devonian, Woolborough Quarry, near 



Newton Abbot. Eig. 1 6, Collection of Mr. 

 Champernowne. Eig. 17, Mr. Vicary's Col- 

 lection. 

 18. Stringocephalus Burlini. Def. Middle Devonian, Bradley, near Newton. Mus. 



Geol. Soc. 

 19,20. ,, „ „ = Terebratula porrecta, Sow '. After the original 



figures, Min. Conch., tab. 576, fig. 1, Bradley, 

 near Newton. 



21. ,, „ ,, A circular, and unusual shape ; Chircombe Bridge, 



Devonshire. Mus. of Geol. Survey. A similar 

 specimen is represented in p. 294, fig. 4, of the 

 second edition of ' Siluria,' but there named 

 St. giganteus. 



22. „ „ ,, = St. giganteus, Sow. A large distorted example, 



from the Middle Devonian Limestone, near 

 Plymouth, and of which a reduced figure is 

 given by Sowerby in the 'Trans. Geol. Soc.,' 

 vol. v, 2d series, pi. lvi, fig. 11. 



