52Q PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Trochus Deslongchampsii, Moore. 



• Elizas, Moore. 



nitidus, Terq. 



Turbo apicalis, Moore. 



Brocastellensis, Moore. 



• costellatus, Terq. 



— — gemmatus, Terq. 

 ■ striatus, Moore. 



Turbo reticulatus, Moore. 



turritus, Moore. 



tumidus, Moore. 



Piettei, Martin. 



Tornatella Buvignieri, 'Terq. 



secale, Terq. 



Turritella Howsei, Moore. 

 Humberti, Martin. 



9. The Sutton Stone and the Southerndown Series. — The .coast- 

 section which has been given bj Mr. Tawney, in the Society's 

 Journal, vol. xxii. p. 75, faithfully represents the general character 

 of the rocks between Sutton and Dunraven. The vertical section, 

 however, which only represents the beds as they appear on the 

 coast-line, fails to convey the great aggregate thickness of the beds 

 of the district. This section gives a thickness of 110 feet ; but, 

 including the beds which come in on the Down, above the edge of 

 the cliffs, I think the whole cannot be estimated at less than 250 feet. 

 An inspection of the cliff-section east of Dunraven will assist in 

 arriving at this conclusion, as there may be seen at this point at 

 least 300 regularly stratified beds, with intervening marls between 

 each, above the sea-level. My section of the Sutton beds, which 

 was prepared before the publication of Mr. Tawney's paper, does not 

 materially differ from that given by him. I need only give the 

 lower or Sutton-stone beds in detail. 



Various closely bedded conglomeratic or granular hard greyish ft. in. 

 limestones, cherty, or in great part composed of flattened 

 pebbles of Carboniferous Limestone, giving the stone the 

 appearance of a pea-grit, estimated at their western outcrop . 200 

 Granular and closely bedded limestones resting on the Sutton 

 Stone, containing Gryphcea incurva at their base, with Am- 

 monites angulatus, Lima gigantea, L. duplicata, &c 25 



Sutton Stone, conglomerate 9 



Sutton Stone, conglomerate 1 



Sutton Stone 1 1 



Sutton Stone, conglomerate 8 



Sutton Stone 1 6 



Sutton Stone, coarse conglomerate 1 6 



Sutton Stone 2 5 



Line of conglomerate 4 



Sutton Stone 1 



Line of conglomerate 2 



Sutton Stone 3 



Sutton Stone 1 



Bastard Sutton Stone, coarse conglomerate 8 



Bastard Sutton Stone, coarse conglomerate 1 



Bastard Sutton Stone, coarse conglomerate 2 2 



Carboniferous Limestone. 



It has been proposed by Mr. Tawney to divide the series into, — 



1. The Sutton Stone. 



2. The Southerndown series. 



3. The Ammonites-Bucklandi beds, divided from the former by the zone of 



Ostrea liassica. 



1. The Sutton series has been considered by that gentleman to be 



