8 PORIFERA. 



Ischadites kcenigi, Murchison, J. W. Salter, Cat. (1873), p. 100. 

 G. J. Hinde, Q. J. G. S. XL (1884), p. 801, and Brit. Foss. 

 Sponges (1881), pi. ii, f. 1, p. 120. Wenlock Limestone ; Dudley. 

 Fletcher Collection. 



I.? micropora, see under Incertse sedis. 



Jerea pastinacea, F. McCoy, A. M. N. H. ser. 2, n (1848), 

 p. 398, and Contrib. Brit. Pal. (1854), p. 45. Upper Green- 

 sand ; Vale of Pewsey, Wiltshire. This specimen cannot be 

 identified with certainty. 



J. websteri (Sowerby ?). Siphonia websteri, W. J. Sollas, Q. J. G. 



S. xxxin (1877), pi. xxv, f. 7, 7 a, p. 806. Gault ; Folkestone. 

 Manon foliaceum, F. McCoy, A. M. N. H. ser. 2, n (1848), 



p. 399, and Contrib. Brit. Pal. (1854), p. 46. Chalk ; probably 



Flamborough. (Not from the Coralline Oolite of Malton as 



stated by McCoy.) 



M. reussi, v. Verruculina reussi. 



Ophrystoma ocellatum [Seeley MS. sp.], G. J. Hinde, Cat. Foss. 

 Sponges, Brit. Mus. (1883), p. 126. Porospongia, O. Fisher, 

 Q. J. G. S. xxix (1873), pi. vi, f. 1. Ventriculites cavatus, 

 Smith, W. J. Sollas, ibid. (1873), p. 68. Cambridge Greensand ; 

 Cambridge. 



Pachytilodia sp., W. Keeping, Foss. Upware and Brickhill (1883), 

 pi. viii, f. 6, p. 149. Lower Greensand ; Upware. 



Pharetrospongia strahani, W. J. Sollas, Q. J. G. S. xxxin 



(1877), pi. xi, p. 242. Cambridge Greensand; Cambridge. 



Plocoscyphia laxa, F. McCoy, A. M. N. H. ser. 2, n (1848), 

 p. 397, and Contrib. Brit. Pal. (1854), p. 45. Upper Greensand; 

 Lyme Regis. 



P. pertusa, Geinitz, W. Keeping, Foss. Upware and Brickhill 

 (1883), pi. viii, f. 1 a, b, p. 145. Lower Greensand; Brickhill. 



Protospongia diffusa, J. W. Salter, Rep. Brit. Assoc. (1865), 

 p. 285, and Cat. (1873), p. 3. G. J. Hinde, Brit. Foss. Sponges 

 (1888), p. 180. Menevian Group; Pen-pleidau, St Davids. 



P.fenestrata, v. Protospongia hicksi. 



