﻿1861.] 



KIRKBY PERMIAN, SOUTH YORKSHIRE.. 



307 



which is an uncommon length. It is not a rare species at Conis- 

 borough, where the individuals belong to the typical form ; nor at 

 Hampole, where individuals of both forms occur, though exceedingly 

 stunted even for Yorkshire. 



T. elongata is the only Brachiopod that has been found in the Per- 

 mian series of South Yorkshire. 



Loc. In Lower Limestone at Conisborough, Brodsworth, Hampole, 

 Hampole Stubbs, and near Wentbridge. It has also been noticed by 

 Prof. Phillips in the vicinity of Perry Bridge. 



POLYZOA. 



1. Acanthocladia anceps, Schlotheim, Denksch. Akad. Miinoh., 



vol.vi. p. 20, pi. 2. fig. 7. 



A. anceps is the common Polyzoon of the Permian strata of this 

 district. It here takes the place — and more than takes it — of the 

 Fenestella retiformis of the Durham beds. It is usually, however, 

 much broken up, good characteristic specimens being rare. In only 

 one quarry (Freestone Quarry) near Brodsworth, have I met with 

 illustrative examples showing the symmetrical branching of the 

 stems, and more rarely the celluliferous surface. 



Both in the quarry named and in others at Cadeby and Hampole, 

 the remains of this species form almost the chief bulk of thick beds 

 of limestone that have long been wrought as a building-stone in the 

 district a little west of Doncaster. The remains of Acanthocladke 

 are to be seen studding the surfaces of the weatherworn walls of the 

 ancient stone buildings of this district. When at Conisborough I 

 saw it in company with Gervillia antiqua in the stones of the walls 

 of the castle-keep — probably old acquaintances of Athelstan the 

 Unready and his compatriots in ' Ivanhoe ' ! 



Loc. In Lower Limestone at Brodsworth, Pickburn, Hampole, 

 Hampole Stubbs, Bull Hill Quarry (Pontefract), and Conisborough. 



2. Thahntscus DUBitrs, Schlotheim, Petrefacten, p. 341. 



Syn. Fenestella ramosa, King. 



I have taken a specimen of a Polyzoon which very much resembles 

 this species. It is rather above an inch long, shows the uncelluli- 

 ferous face, and has a principal stem about ^-th of an inch in width, 

 with many irregular branches almost as wide. 



Loc. Freestone Quarry, Brodsworth. 



3. Uetepora Ehrenbergi, Geinitz, Grundriss der Versteinerung., 



p. 585, pi. 23. fig. 12. 

 Syn. R. Lonsdalii, Howse ; Fenestella Permiana, King. 

 Interesting fragments of this scarce species occur, along with the 

 two preceding, in the Freestone Quarry at Brodsworth. 



4. Stenopora Mackrothi, Geinitz, Grundriss der Versteinerung., 



p. 582. 



Small specimens of simple and branched stems of this species occur 

 among the debris of Acanthocladia anceps. In the Brodsworth 

 Freestone Quarry the examples are always sections, some of which 

 show the internal arrangement of the cells very clearly. At Hampole 



