﻿PLATE XX. 



DEVONIAN SPECIES. 



Fjg. 



1, 2. Productus subaculeatus, Murch. = fragaria, Sow. From Middle Devonian, Woolborougli Quarry. 



3 — 6. ,, scabriculus, Martin. Upper Devonian. Figs. 3, 4, casts of ventral and dorsal valves, 



from Brown Grits near Barnstaple. Fig. 5, interior of dorsal valve, drawn 

 from a gutta-percha impression taken on a cast in the Brown Grits of 

 Barnstaple. Fig. 6, figure taken from Phillips' ' Pal. Foss. of Devon,' &c, 

 pi. xxv, fig. 97 4 . 



~. ,, longispinus, Sow. 1 From casts, Upper Devonian Grits, top of Orchard Quarry, Pilton. 



Collection of Mr. J. M. Hall. 



8. This is drawn from the original specimen of Lept. interrupta, Sow., said to have been found in the 



Devonian Limestone of Plymouth, but which appears to me more like an example of 

 P. fimbriatus or laxispinus, Sow., from the Carboniferous period, and which may have 

 accidentally been mixed up with the specimens collected at Plymouth by the Rev. W. V. 

 Hennah. Mus. Geol. Soc. 



9. Discina nitida, Phillips. Upper Devonian ? Foraminated valve, from Frankinurst Quarry, parish of 



Pilton. Collection of Mr. J. M. Hall. 



II). ,, ,, Specimen found by Mr. Salter in the Marwood beds of West Angle, south side. Mus. 

 Geol. Survey. 



11, 12. Lingula squamiformis, Phillips = L. Mola, Salter. Upper Devonian 1 from Sloly or Plaistow Mill, 



parish of Sbirwell, North Devon. The Discina nitida occurs in same beds. 



13. Calceola sandalina, Linn. Middle Devonian, Chircombe, Ogwell. Mr. Austen's specimens may be 



seen in Mus. Geol. Survey. 



14. Uncites gryphus. A better specimen than those figured in PI. IV, figs. 11, 12. From the Middle 



Devonian Limestone of Woolborougli Quarry. Collection of Mr. Vicary. Some 

 equally large examples have also been found by Mr. Champernowne, at Bradley 

 (edge of the down on the Ogwell side of the valley, above the Mill). 



15. Species undetermined. From Lanes or Woolborougli Quarry. Collection of Mr. Vicary. 



16. Cyrtina heteroclita ? ? From the slates or grits, "Coomhola series," of Reenydonagan Point, near 



Bantry, Ireland. This shell has been alluded to at p. 113, and by Mr. 

 Baily, at p. 21 of the Explanation to accompany Sheets 192 and 199 of the 

 Geol. Survey Map illustrating part of the counties of Cork and Kerry, as 

 being, perhaps, an abnormal condition of Spiriferina cristata, var. 

 octoplicata. 



17. Productus. Species undetermined, on the slab containing the Cyrtyna ? fig. 16. 



