Vol. 62.] 



IN THE CARBONIFEROUS ROCKS AT RUSH. 



301 



(3) Certain structural characters of the variant of Clisiophyllum curlceenense 



are paralleled in the early Clisiophyllids from C-S x of the South- 

 Western Province. 



(4) Productus cf. conciwms and Athyris cf. expansa are characteristic of C-S t 



in the South- Western Province. 



(5) The entrance and abundance of convex papilionaceans is highly characteristic 



of in the South-Western Province. 



(6) The entrance of fimbriate Producti, a striate Spirifer, and of Schizophoria 



in its typical form. 1 



3. Fauna of the c Cyathaxonia-Be&s ' ; (R 17, R 21, 

 and R 18). 

 (i) Corals : 



Cladochonits cf. bacillarius, M'Coy. 

 Amplexi- Zaphrentis, subgen. nov. 

 Zaphrentis aff. Enniskilleni. 

 CyathophyUum sp. 

 Pensiphyllum. 



Lithostrotion Phillipsi, Edwards 

 Haime. 



Olisiophylloid Lithostrotion. 

 Caninoid Clisiophyllid. 

 Campophyllid. 



Cymatiophylloid Clisiophyllid. 

 Cyathaxoma rushiana, sp. nov. 

 Cyathaxonia contorta, sp. nov. 

 Aulophylloid CUsiophyUum. 



Cyathaxonia rushiana is highly characteristic, and occurs 

 throughout ; it is, therefore, a very valuable index. 



Cladochonus is also a striking fossil, but is apparently limited to 

 a single bed (R 21 d). 



Amplexi- Zaphrentis and Zaphrentis aff. Enniskilleni are not 

 uncommon, and are important from the standpoints of evolution 

 and correlation. 



The Clisiophyllids are all of a Caninoid aspect. 



(ii) Brachiopods : 



Productus concinnus. 



Productus semireticulatus (Martin), 



and variants towards Pr. costatus, 



Sow., and towards Pr. longispinus, 



Sow. 

 Productus longispinus, Sow. 

 Productus scabriculo-costatus. 

 Productus aff. scabriculus (Martin). 

 Productus fimbriaio-pustulosus and 



variant towards Pr. Youngianus, 



Dav. 

 Productus elegans, M'Coy (= Pr. 



punctato-fimbriatus). 

 Productus margaritaceus, Phil. 

 Productus corrugatus, M'Coy. 

 Productus hemisphericics, Sow. 



Choneti-Productus (?) 

 C'honetes (convex papilionacean). 

 Schizophoria resupinata (Martin). 

 LeptoBna cf. distorta, J. Sow. 

 Orthothetes cf. radicdis (Phil.). 

 Spirifer bisulcaius, Sow. and variants. 

 Spirifer triradialis, Phil. 

 Spirifer striatus (Martin). 

 Syringothyris subconiccc (Martin). 

 Athyris glabristria (Phil.) convergent 



on Martinia glabra. 

 Athyris cf. expansa (Phil.). 

 Athyris planosidcata ? (Phil.). 

 Seminula sp. 

 Camarophoria aff. isorhyncha (M'Coy). 



1 I have already pointed out, in Quart. Journ. Geol. Soc. vol. lxi (1905) 

 p. 296, that the subzonal index of Z 2 in the Avonian sequence differs rather 

 considerably from Martin's type of Schizophoria resupinata. Since this leads 

 to confusion, I have decided to reject Schizophoria resupinata, mut. Z 2 , as a 

 subzonal index, and to replace it by Zaphrentis aff. cornucopia, which therefore 

 becomes the index of Z 2 . The typical Schizophoria resupinata is only found in 

 the South-Western Province at the very base of C, and no specimens have, as 

 yet, been recorded from any other horizon. 



Q. J. G. S. ?N T o. 246. y 



