Mr. W. S. Kent on two new Siliceous Sponges. 217 
Leda hyperborea, Lovén. R. 5 tley. 
Cardium angustatum, Sow. x Thorpe, Suffolk. 
interruptum, Wood. C.C. Orford 
Mon um, Wood, — C. elegantulum, Moller. Hab. 
orth s 
* Cardita ane ee C. analis, Phil. Chil. ser. Sud- 
bourn, near Orfo 
—— rudista, Lam s =the long variety of C. senilis (Crag 
Moll.), the shorter being the Arca antiquata of Poli, but 
not of Linné, and the C. sulcata of Lamarck. 
Erycinella ovalis, Conrad. R. e a lton. 
Venus ovata, Pennant. R. C. ley. 
chione, Linné. R.C. Wald gReld. 
mee pullastra, W. Wood. R.C. Waldringfield. 
virginea es sarniensis. | C.C. Orford. = T. per- 
ovalis, Woo 
Gastrana iamnow, Sow., = Petricola ventricosa, Krauss. Hab, 
South A 
* Necra E Sars. C. C. Orford. 
* Pholas dactylus, Linné. R.C. Walton. 
a parva, Pennant. R.C. Waldringfi eld. 
* Toxopneustes drübachiensis, Müller. R.C. = oe 
Echinocyamus oviformis, E. F. R.C. Walto 
hispidulus, E.F. R.C. Walton. 
Flabellum Woodii, Milne-Edwards. R.C. Waldringfield. 
? 
In pursuance of a statement made by myself at the Norwich 
meeting of the British Association concerning the non-deriva- 
tive character of the fossils of the Red Crag (execpt i in such 
palpable instances as those of Eocene shells, e Report 
of Sections), I have now by me a list of nearly fifty s fom this of 
bivalves which I have seen pus the va mes itn rom 
deposit, DNE Solen e Pan Faujasit, Mactra 
glauca, and many species which are ‘held together by very 
slight amar fastenings. 
XX.— On two new Siliceous Sponger, taken in the late Dredging- 
Expedition of the Yacht ‘ ' off the Coasts of Spain 
and Portugal. By W. Hun Kent, F.Z.8., F.R.M.S., 
of the Geological Department, British Museum 
[Plate XV.] 
IN addition to the form described as Pheronema Gray? in last 
month’s number of this Magazine, other sponges were taken 
at a considerable depth, which, though not so pretentious in 
