MOOBE ABNORMAL SECONDARY DEPOSITS. 



517 



Ammonites Sauzianus, Z>' Orh, 



semicostatus, Young and Bird. 



angulatus, Schlot. 



, sp., young. 



Belemnites acutus. 

 Grrjphtea incurva, abundant. 

 Ehynchonella variabilis. 

 Lima gigantea. 



, sp. 



Pecten. 



Area pulla, Terq, 

 Astarte. 



Cardinia scapha, Terq. (C. elongata, 

 Dunk.). 



, several sp. 



C. sublamellosa, Martin. 



Cardita tetragona, Terq. 



CucuUffia Hettangiensis, Terq. 



Leda Heberti, Martin. 



Litbodomus. 



Nucula, sp. 



Actaeon angulifer, Martin, 



Ampullaria angulata, Desl. 



Alaria. 



Ceritbium Henrici, Martin. 



Semele, U Orb. 



Dumortieri, Martin. 



Sinemuriensis, Martin. 



acuticostatum, Terq. 



paludinea, Terq. 



gratum ? Terq. 



porulosum, Terq. 



, sp. 



Dentalina, sp. 

 Littorina clatbrata, Terq. 

 Orthostoma averna, Terq. 

 Tornatella Buvignieri, Terq. 

 Pleurotomaria concava, Martin. 

 Turritella Humberti, Martin. 



Jenkeni, Terq. 



Turbo triplicatus, Martin. 

 , sp. 



'. ^P- 



Turritella Desbayesii, Terquem. 



3. Coiuhridge Section. — Before describing the Brocastle and Sutton 

 sections, it may be desirable to say a few words with reference to 

 others which have yielded some species of the coral-fauna I 

 have placed in the hands of Dr. Duncan for description, and more 

 especially as some of the sections yield fixed horizons, which will 

 enable me to determine their positions in the Liassic series. From 

 Brocastle along the line of the Golden Mile to Cowbridge the Lias 

 abuts against the Carboniferous Limestone, and is usually conglome- 

 ratic and much mineralized. Immediately opposite the railway- 

 station at Cowbridge a quarry is being worked, in which there are 

 compact beds of crystalline Lias of a thickness of 30 feet, its depth 

 below being unknown. The lower beds of this section thicken and 

 contain many layers or nodules of flint, alternating with the lime- 

 stone. The larger fossils are chiefly in these bands, and, though 

 numerous, are very friable and in bad condition ; amongst them are 

 PUcatula acuminata, Ostrea intusstriata, Pecten Pollux, Ostrea liassica, 

 Sow., Lima gigantea, Cardinia, Astarte, (fee. Close to this quarry is 

 another, in which the beds are rather higher as well as thinner and 

 more rubbly. One of these is in great part composed of specimens 

 of Thecosmilia Michelini, Terq. and Piette, which stand out thickly 

 from the abraded surface of the bed. Like the Shepton Ammonites- 

 B acJclandi heds, the matrix appears almost wholly composed of organ- 

 isms ; for in polished specimens of this bed the interspaces between 

 the corals contain numbers of Entomostraca &c. This bed also con- 

 tains attached Ostrea intusstriata, Em., and Neritopsis exigua, Terq. 

 In a roadside quarry near Cowbridge we again find Pecten Pollux. 

 From the lithological look of the Cowbridge Lias it would readily 

 pass for Carboniferous Limestone ; I have found no Ammonites 

 in it, and it is difficult to assign for this section its precise hori- 

 zon. There is a general absence of the coral-fauna of Sutton and 



