﻿CONCLUSION. 



109 







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, 5 



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ood Se 



Ph 



orougli 

 meston 













cu 



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outh 











liferous. 



lola Series 

 s above 

 e, in Coun 



and Mam 

 h Devon. 



ke and S 

 Series. 



o r 



mbe Grouj 



Group. 



lates and 





o 

 'v. 



'ooml 

 Grit 

 ston 



ilton 

 Nort 



audla 

 win 



orqua 

 mou 



fraco 



i nton 



ooe S 





u 





Pu 









.-J 



►J 



?TerebratuIa elongata .... 



X 





X 













?Rensselacria stringiceps .... 





? 









X 







Athyris Bartoniensis .... 











X 









— IMewtoniensis .... 











X 









?Spirifera primsera, Stein., described at| 



















p. 35 as Sp. cultrijugata .. . j 

















X 



?Spirifera Newtoniensis .... 











X 









? — bysterica .... 











X 





X 





? — lineata, vel microgramma . 



X 









X 









? — laminosa ..... 



X 





I 













1 — insculpta ..... 



X 









X 









?Ortbis bipparionyx ..... 

















X 



1 — granulosa ..... 











X 





X 





Productus scabriculus .... 



X 



X 



X 













? — longispinus .... 



X 





X 













Terebratula elongata. Two or three casts found in the neighbourhood of Barnstaple have been with 



uncertainty referred to this species. 

 Rensselceria stringiceps. This identification is uncertain ; the material at hand being very incomplete. 

 Athyris Bartoniensis and A. Newtoniana have been established on insufficient material ; but, as these 



shells differed much from any of the others found in our Devonian rocks, 



they have been provisionally named. 

 Spirifera hysterica. This determination is also uncertain for the reasous given at p. 34. 



— cultrijvyata was so named at p. 35 of this Monograph, but the identification was given under 



great doubt, the material being very incomplete and unsatisfactory. It is 

 possible that the casts in question might be more correctly referred to 

 Sp. primcEva of Steininger. 



— Newtoniensis has been so named after a single specimen in the British Museum. This 



species (?) will require further investigation. 



— lineata. All the specimens so named, which I was able to procure, were very imperfect and 



unsatisfactory ; but it is probable that this species, or at any rate a nearly 

 allied form, does in reality occur in our Devonian strata. 



— laminosa. Only two or three imperfect, casts or impressions supposed to belong to this species 



have been found in our Upper Devonian Grit. This species has been here 

 recorded on Mr. Salter's authority. 



— insculpta. Several imperfect specimens bearing much resemblance to the Carboniferous shell 



have been found in our Middle Devonian Limestones. A search for more 

 complete examples at Lummaton would be desirable. 

 Orthis hipparionyx. Large internal casts occurring abundantly at Looe have with some uncertainty 

 been referred to O. hipparionyx. 



