72 



they are acquainted with in France or Germany. Its upper 

 part consists of: a — a hard coarse brown rubbly Oolite, full of 

 flattened concretions, cemented together by a calcareous matrix. 

 When the blocks weather, the concretions resemble flattened 

 peas, and form an uneven surface. In the cavities of the PisoHte 

 beautiful Echinidse are often found in great perfection, and 

 many other fossils are very well preserved therein, p — A hard 

 cream-coloured pisohtic rock, made up of compressed flattened 

 concretions like those of a; the bed is more compact in parts. 

 7 — A coarse brown ferruginous Ragstone, fall of large OoHtic 

 grains, and much Peroxide of Iron; it is readily disintegrated by 

 frost. The three beds measure from 30 to 40 feet in thickness. 

 The Pea-grit varies considerably in development in different 

 locahties. Crickley, Leckhampton, and Cleeve Hills afford good 

 types of this bed. 



Cephalopoda. 



Ammonities Murchisouse, Sow. Belemnites spinatus, Qtienst. 



Nautilus tnincatus, Sow. 



Gasteropoda. 



Patella rugosa, Sow. Natica adducta, Phil. 



inornata, Lye. Cin-us nodosus, Sow. 



Pileolus Isevis, Soio. Turbo capitaneus, Gold/. 



Nerita costata, Sow. Trochotoma carinata, Lye. 



CONCHIFEKA. 



Ostrea gi*egaria, Sow. Astarte excavata, var., Sow. 



Placunopsis, Sp. Myopsis rotiindata, Buck. 



Hinnites abjectus, Phil. Goniomya angulifera, Sow. 



Mytilus imbricatus, Sow. Avicula complicata, Buck. 



Lima sulcata, Miinst. Ceromya Bajociana, d'Orb. 



pecteniformis, Schoth. Cardium striatuluni, Phil. 



duplicata, Gold/. Isevigatum, Lye. 



lyrata, Miinst. Pinna cuneata, Bean. 



Lycetti, Wright 



