MUSEUM OF THE NATURAL HISTORY SOCIETY. 235 



Name and Locality. Reference. 



Axinus dubius, (Schloth.) var., Perm.Foss.,P1.15,f.23-32. 

 Loc. — Quarries near Marsden, Min. Conch., PI. 314. 



Byer's Quarry, Roker, 

 Black Halls, etc. 



Turbo Permianus, King, Perm.Foss., P1.16, f. 16. 



Loc. — Coast near Byer's 

 Quarry. 



PISCES. FISHES. 

 Acentrophorus varians,(iT«H%.) Nat. Hist. Trans., Vol. 1, 

 Loc— Marsden Bay; PulwellHill. p. 76, PI. 9, f. 2. 



Acentrophorus altus, {Eirlly.) Nat. Hist. Trans., Yol. 1, 

 Loc— Pulwell Hill. p. 80, PI. 9, f. 1. 



Acentrophorus Abbsii,(itm%.) Nat. Hist. Trans., Yol. 1, 

 Loc— Pulwell Hill. p. 78, PL 9, f . 3a, 3b. 



Acrolepis Kirkbii, Hoivse, Nat. Hist. Trans., Yol. 7, 



Loc. — Marsden Bay and p. 131. Acrolepis Sedg- 



Pulwell Hill. wicki, Kirkby. 



Middle Series. 



Concretionary, Cellular, and Shell-limestone. 



German equivalents : — RauclcwacJce. 



Beds of an amorphous, irregular structure, with often a false 

 brecciated appearance, caused by the breaking up of the original 

 laminated marly beds, and the cementing together or replace- 

 ment of the marl by the infiltration and permeation through 

 the broken up stratum of highly crystalline or saccharine lime- 

 stone : sections occasionally shew numerous, small, irregular 

 cavities, partially or entirely filled with a fine, earthy, yellow- 

 ish, powdery marl; other parts presenting the appearance of 

 being formed of shapeless fragments of compact limestone im- 

 bedded in a completely investing matrix, without taking the 

 form of a true breccia. Occasionally, however, large angular 

 masses of finely laminated limestone are imbedded in it, espe- 

 cially towards its upper surface, where it also becomes more 



