150 INVERTEBRATA. 



Localities. Up ware, Brickhill. 



N. Europe. Precisely similar masses of coarse sponge tissui 

 occur at Essen (" Cupulospongia infundihuliformis "J ; and 

 Plauen near Dresden. 



Plants. 



Small ferruginised fruits, with overlapping scale-like bract 

 Affinities doubtful. 



See Plate VIIL, fig. 7. 

 Locality. Upware. 



DERIVED FOSSILS. 



A. The Derived Fossils of Neocomian Age, found in: 

 THE Dark Irony Grit. (See ante, p. 32.) 



Cerithium (Turritella) granulata, Forbes ; non Sow. 

 Localities. Upware ; Ingoldsthorpe, Norfolk (Geological Soj 

 ciety's Collection). 



Trochus, sp. 



(Ornamented species.) 

 Locality. Upware. 



Pern A Kicordiana, d'Orbigny. 

 (Hinge portions of.) 

 Locality. Upware. 

 This species occurs in the Atherfield beds, Isle of Wight, and 

 in the Shanklin Sands ; also in the Middle Neocomian of Tealby, 

 in Lincolnshire, and of Yillers le Lac, St Croix, and in the Aptien 

 of the Perte du Rhone. 



Pern A Mulleti, Deshayes. 



Casts of the ligament area, shewing the alternating larger and 

 smaller fossaB as figured by MM. Leymerie and Forbes. 



Localities. Upware, in the black grit nodules ; base of the 

 Atherfield series ; Maidstone ; Surrey ; Tealby, middle series ; 

 Speeton, upper series. 



