﻿Vol. 64.] m THE CAKBONIFEROUS EOCKS AT LOUGrHSHINNT. 445 



Amplexi-Zaphrentis} 

 Cyathaxonia (rare). 

 '^Liihostrotion cf. af^ne (Fleming), Ed. & H. Abundant. 



^j[ii) Brachiopods : 



Latissimoid Producti. Common at one or two levels. 



Productus spimolosus, Sow. 



Productus, sp. nov, (Eush paper, pi. xxx, fig. 6.) 



The abundance of a Cyathophylloid Lithostrotion and the 

 occurrence of Densiphylloid Zaj)hre7ites of the E-ush type and of the 

 same Productus, sp. nov., give to this series the faunal aspect of the 

 megastomaAiQdiS^ and demonstrate that, at a high level in D, it is 

 possible to meet with a fauna dominated by a Cyathophylloid Litho- 

 strotio7i and yielding no convincing evidence of its high horizon. 



In the present instance, however, the phase was of short 

 endurance both in time and in space : for, south of Drumanagh Head 

 (L^ and L^), beds of the same approximate age contain the same 

 Lithostrotion (abundantly) associated with fossils characteristic of 

 the horizon. The horizon of this phase is definitely fixed strati- 

 graphically by the continuity of the sequence upwards into the 

 P beds. 



(4 d) Fauna of the P Zone (L 6 d to L 9). 



In ascending order ^ : — 



Lower P '^ (x) includes L 5 d, g, h,j, k, m. 



Middle P ^ (y) „ Jjol,'L6a,b,c,Ij7c,d,Ij8a, h, d, k, I, m, n. 



Upper P EE (z) „ L Sp and L 9 a, b, c, d, e. 



(i) Corals: 



(x) '^Michelinia tentcisepta, raw favositoides nov. 



(x) '^Zaphrentis Enniskilleni, Ed. & H. 



{x, y) Densipbyllids including forms near : 



(Densiphylloid Zaphrentis, sp, nov, 

 A species common at Bradbourne. 

 A species common at Dunbar. 



(y) Cyathophyllum Mtirchisoni,'E,di. k'K. 



{x, y) Lithostrotion aff. irregidare. (PhilL), Ed. & H. 



(y) '^Koimickophylhim cf. interruptimi. Thorns. & Nich. 



(x) ^Lonsdaloid Carcinophylhim. 



^ This descriptive generic term has the same connotation as Caninia, 

 Michelin (in its original sense), as has been recently demonstrated by 

 Mr. E. G. Carruthers, Geol. Mag. dec. 5, vol. v (1908) p. 158. It is here 

 retained, in order to maintain unison with the Eush paper. 



'^ In the map (fig, 1, p. 414) and in the synoptical table (p. 434) Lower and 

 Middle P are included together in P\ and Upper P is equivalent to P^. 



