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. 



IJ micropora, see under Incertae sedis. 



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

 p. 398, and Contrib. Brit. Pal. (18.54), p. 45. Upper Oreen- 

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

 identified with certainty. 



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

 S. XXXIII (1877), pi. XXV, f. 7, 7 a, p. 806. Gault ; Folkestone. 



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

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

 Flamboroiigh. (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. 12G. Porospongia, 0. Fisher, 

 Q. J. G. S. XXIX' (1B73), 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. xxxiii 



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



Plocoscyphia laxa, F. McCoy, A. M. N. H. ser. 2, ii (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. 



