ON NEW BRACHIOPODA. 157 



Natural Histonj Society. At that time I was convinced 

 many new specles miglit be expected to be discovered 

 from a contlnued investigation of the secondaiy formations, 

 and below I am enabled to give figures and descriptlons 

 of sixteen additional species, whereby our knowledge of 

 tliis interestlng class of shells is completed to tlie present 

 tlme. 



On Hampton Down, near Bath, there are extensive 

 excavatlons Avliere the Great Oolite was formerly largely 

 worked. Latterly a new quarry has been commenced, and 

 in Order to reach the workable beds of freestone, the foUow- 

 ing beds in descending order had to be passed through : — 



Ft. In. 



1. Thin bands of freestone . . . . 4 6 



2. Brown raggy coralline bed . . 9 



3. Compact grey limestone . . . . 5 



4. Workable beds of great oolite 20 



The grey limestone, (No. 3) contains many organic 

 remains, but owing to its liard and intractable chai'acter 

 few are to be extracted entire. In its weathered edges 

 may be seen the Livia -cardiformis, Trichites, Lithodomi, 

 and many corals. 



The raggy bed (Xo. 2) is very incoherent, and appears 

 to have been an ancient coral reef, it being in great part 

 composed of corals and sponges. Intermingled with these 

 branching corals are myriads of beautiful organisms, which, 

 from the unconsolidated nature of the bed, are easily 

 extracted. They consist of dismembered ossicles of star- 

 fishes, the platcs and occasionally the bodies of the Brad- 

 ford Encrinitc (Apiocrinus Parkinsoni), spines and shells 

 of Echini, Ostrca), and other mollusca, and with them 

 very many specimens of a small Brachiopod, which has 



