PLATE V. 



DEVONIAN SPECIES. 



Fig. 



1. Spirifera disjuncta, Sow. = Sp. Verneuilii, Murch. After the original illustra- 



tion, ' Trans. Geol. Soc.,' 2nd ser., vol. v, pi. liv, fig. 13. 

 Upper Devonian, Petherwin, Cornwall. 



2. „ „ Ibid., vol. v. pi. liii, fig. 8. This internal cast shows the 



muscular impressions. Barnstaple. 



3. „ „ Prom South Petherwin. Correctly restored, from exact 



measurements. 



4. 5, 6. „ „ Middle Devonian, Woolborough Quarry, near Newton 



Abbot. Pig. 4, Collection of Mr. Champernowne ; fig. 

 5, Mr. Lee's Collection ; fig. 6, Geol. Survey Coll. 



7. ,, „ Brown grits, Barnstaple. 



8. „ „ = Spirifera gigantea, Sow. Flattened and distorted, in 



micaceous Devonian slate, at Tintagel, Cornwall. Sowerby 

 mentions that some examples measured nearly nine 

 inches across. 



9. ,, „ = Sp. calcarata, Sow. After the original illustration, 



' Trans. Geol. Soc.,' 2nd series, vol. v, pi. liii, fig. 7. 

 Barnstaple. 



10. „ „ Brown grits, Upper Devonian, Croyde Bay, seven miles 



north-north-west of Barum. Coll. of M. M. Hall. 



1 J . „ „ • = Sp. extensa, Sow. Distorted specimen. Prom South 



Petherwin, Cornwall. Mus. Geol. Soc. 



12. ,, „ = Spirifer protensus, Phillips. The original illustration, ' Pal. 



Foss. of Devon, Cornwall, and West Somerset/ pi. xxviii. 

 South Petherwin. Mus. Geol. Survey. This is a de- 

 corticated, injured specimen, or cast ; but as remains of 

 the striation occur on several portions of the ventral 

 valve, I have been able to give a correct restored illus- 

 tration in fig. 12 a . 



