PLATE VIII. 



DEVONIAN SPECIES. 



Fig. 



1 — 3. Splrif era cu!tr?jugata?,~F. ~Roemer. Internal casts and impressions. Lower 



Devonian?, Looe, Cornwall. Collection of Mr. 

 Pengelly. 



4. 5. ,, lavicosta, Val. in Lamarck, = Sp. ostiolatus, Schl. Fig. 4, partly re- 



stored specimen, from Middle Devonian, Woolborough, 

 near Newton Abbot. Fig. 5, from an imperfect speci- 

 men likewise, figured by Phillips (' Pal. Foss. of 

 Cornwall, Devon, &c.,' pi. xxv, fig. 132"); Valley 

 of Rocks, Linton, Devonshire. 



6 — 8. „ speciosa, Schlotheim. Hope's Nose, near Torquay. Fig. 6, Col- 



lection of Mr. Pengelly. Fig. 7, Mus. Geol. Survey. 

 Fig. 8, Mus. Geol. Soc. 



9, 10. „ „ ? = Sp. costatus, Sow. Fig. 9, after the original figure ('Trans- 



Geol. Soc.,' 2nd ser., vol. v, tab. lv, fig. 6) ; Fowey. 

 Cornwall. Fig. 10, Sp. costatus, Phill. (' Pal. Foss.,' 

 pi. xxx, fig. 134''); Meadfoot Sand, near Torquay, 

 Devon. Are these referable to Sp. paradoxa ? The 

 specimens are so imperfect as to be hardly determinable. 



11, 13. „ „? = Sp. paradoxus, Schl. Fig 11, Hope's Nose, near Tor- 



quay. Fig. 13, Fowey, Cornwall. Mus. Geol. Survey. 



12. ,, (uncertain) It has been referred by the Survey Palaeontologists to Sp. 



Bouchardii ; but the width of the area negatives such 

 a conclusion. 



14, 15. „ sub-cuspidata, Schnur. Hope's Nose, near Torquay. Collection of 



Mr. Pengelly. 



16,17. „ hysterica, Schloth. ? From Linton, North Devon. Sharpe's Col- 



lection, Mus. Geol. Soc. 



18. „ „? Middle Devonian Limestone, near Plymouth. 



