ETHERIDGE ^DEVONIAN BOCKS AND FOSSILS. 



675 



Table X. (continued). 



Classes. 



Brachiopoda 



I 



Lamellibran- 



CHIATA 



Gastbrofoda. 



NUCLEOBRAN- 

 CHIATA 



Cephalopoda 



Lingula squamiformis, Phill. 



Productus scabriculus, Mm't 



Rhynchonella acuminata, Mart. .. 



pleurodon, Phill. 



ipugnns, Mart 



reniformis, ^Sfew 



Spirifera Urei, Flem 



Spiriferina cristata, Schloth 



Streptorhynchus crenistria, Phill... 



Terebratula sacculus, Mart 



Strophomena rhomboidalis, Wahl. 



Avicula Damnoniensis, Sow 



Aviculopecten nexilis, Sow 



plicatus, Sow 



transversus, ^Sow 



Conocardiuin aliforme, Sow 



Curtonotus mxio, Salt. {elegdiXis Salt.) 



CuciillaBa amygdalina, Phill. 



unilateralis, Sow 



Acroculia vetusta, Sow. .. 



Euomphalus planorbis, Vern. . . . 



Loxonema rugifera, Phill. 



tumida, Phill 



Macrocbeilus imbricatus, Sow. . . . 



Murchisonia spinosa, Phill 



angulata, Phill. 



Pleurotomaria expansa, Phill. . . . 



Bellerophon Urei, Flem 



hiulcus, Sow 



subglobatus, M'Coy 



Goniatites excavatus, Phill. 



serpen tinus, Phill. 



spirorbis ?, PM^ 



Orthoceras cinctum. Sow 



cylindraceum, Flem 



lineolatum, PM^. 



imdulatum, /Sow 



striatum, Sow 



Poterioceras fusiforme, Sow 



DEVONIAN. 



g 



28 



47 



56 



It will be well to analyze this Table, which expresses the entire 

 value of specific agreement. 



Plantce. — Two species of the known thirteen are common to the 

 two formations. 



Ccelenterata. — Amongst the Corals, only one species {Miclielinia 

 antiqua) occurs common to the two systems, although twenty-four 

 genera and fifty-three species are known in the Lower and Middle 

 Devonian slates and limestones of North and South Devon. ( Vide 

 Tables II., V., VIII.) These, and the entire series of roclcs which 



2z2 



