150 1NVERTEBRATA. 



Localities. Upware, Brickhill. 



N. Europe. Precisely similar masses of coarse sponge tissue 

 occur at Essen (" Cupulospongia infundibuliformis ") ; and at 

 Plauen near Dresden. 



Plants. 



Small ferruginised fruits, with overlapping scale-like bracts. 

 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 ; Ingoldstliorpe, Norfolk (Geological So- 

 ciety's Collection). 



Trochus, sp. 



(Ornamented species.) 

 Locality. Upware. 



Perna Ricordiana, 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 Villers le Lac, St Croix, and in the Aptien 

 of the Perte du Phone. 



Perna Mulleti, Deshayes. 



Casts of the ligament area, shewing the alternating larger and 

 smaller fossoe 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. 



