Vol. 67.] THE CAKBONIEEEOUS SUCCESSION IN GOWER. 549 



Brachiopods : — 



Productus hemisphericus Sow. — 5, 6 a, 8 (very abundant). 

 Productus giganteus (Mart.) — 5, 3, 6 a, 8. 



Clionctes (Davie&iella) aff. comoides (Sow) Vaughan — 5, 8. (See p. 561.) 

 Athyris cf. expansa (Phill.), mut. D l — 6 a. 

 The above fauna is characteristic of D T throughout the South- 

 western Province. 



Dm: 



The uppermost beds of the Pwll-du section contain Dibunophyllum 

 aff. \js Vaughan and Lithostrotion portlocki (Broun) Ed. & H. (both of 

 which are D 2 forms), in association with the normal D x assemblage. 



D 2 : 



South-Western District: Well exposed in quarries at 

 Port Eynon. 



Fauna : — 



Corals : — 



A narrow Syringopora. 



Michelinia tenuisepta (Phill.) (near the top). 



Alveolites (?). 



Zaphrentid and ' Calophyllid.' 



Cyathophyllum murchisoni (?) . 



Lithostrotion irregulare (Phill.) (abundant in the lower part). 



Lithostrotion junceum (Flem.) Ed. & H. 



Petalaxis portlocki Ed. & H. (common near the top). 



Dibunophyllum 4* Vaughan (not common). 



Brachiopods : — 



Latis9iinoid Productus (common). 



Productus cf. concinnus Sow. (broad form). 



Productus cf. muricatus Phill. 



Productus scabriado-costatus (abundant at the very top). 



Productus striato-corrugatas. 



Papilionaceous Chonetes (small form). 



Leptoena cf. distorta Sow. 



Spirifer planicotta (M'Coy). 



Martinia cf. ovalis (Phill.). 



Martinia glabra (Martin). 



Bryozoa : — 

 Fenestella sp. nov. 



Note. — Although Lonsdalia has not yet been recorded with 

 certainty, the above fauna may be unhesitatingly regarded as 

 characteristic of D . 



The D 2 _ 3 Phase: 



T? f. (' Oyster- f Top of quarry on north of Colts Hill (a). 



j\- . • t < mouth. [ 'Black-lias' Quarry (b). 



(^Bishopston (road-section in Bottenstones) (c). 

 South- Western District : Port Eynon, above D series) (d). 



Since this phase was unknown to me when writing the ' Bristol 



