FAUNAL SUCCESSION OF THE UPPER BERNICIAN 599 



Faunal Diagnoses*. 



a. — Shallow water fauna, mainly lamellibranchs and certain 

 brachiopods. Corals extremely rare, but Dibunophyllum has 

 been found. The bed corresponds, approximately at least, in 

 position to the concretionary beds immediately below Di of 

 the South-West Province. 



I.-(Di). 



Cyathophylluvi murchisoni Ed. and H. very common. 



Cainpophyllum derbiense. 



Diphyphyllum stibibici/mm (M'Coy). 



Carcinophyllum 6 Vaughan. 



Dibunophyllum 9 Vaughan. 



Clisiophylloid Lithostrotion. 



Liihostrotion trregulare, as well as Lilh. juncenm and Lllh. 

 porflockla.hnnda.nt, but as yet of no value in subdividing the 

 D zone. 



The fauna is comparable with that of Di in the South-West 

 Province. 



■ II.— (D2). 



II. contains forms found in D2 of the South-West Province. 

 Lonsdaleia floriformis, Flem. 

 Dibunophylluvi cf), Vaughan, and variants. 

 Lithosii-otioii irregulare and Lith. juncetim. 



III.-(D2-3). 



Representing in its main character a Zaphrentid phase. 



Caninoid Canipophylhim. 



Zaphrentis near enniskilleni, E. and H. 



* I am indebted for this portion of the paper to Dr. Vaughan, 

 having embodied here his report on the corals submitted to him for 

 examination. What sHght alterations have been made were necessitated 

 by the results obtained in subsequent investigations. 



