96 SUPPLEMENT TO THE CRAG MOLLUSCA. 
of Norwich Crag shells, as from Thorpe, ‘a single valve,’ and is marked unique. This 
specimen cannot now be found, and as no confirmation of it appears in any of the 
collections known. to me, it is impossible to say what species was intended. 
SCAPHANDER LIBRARIUS? Lovén. Supplement, Tab. V, fig. 18 a, 6. 
ScaAPHANDER LiBRaRivs, Lovén. Ind. Moll. Scandin., p. 10, 1846. 
— — Jeffreys. Brit. Moll., vol. v, pl. 102, fig. 9, 1869. 
Locality. Coralline Crag, Sutton. 
My cabinet contains two or three specimens of the above genus, which appear to 
differ from “ignarius, Linn., m being much less expanded at the lower part, and I have 
referred them, but with doubt, to the new species of Dr. Lovén. My specimens are not 
quite perfect. 
Buriama ventrosa, S. Wood. Crag Moll., vol. i, p. 182, Tab. XXI, fig. 11. 
This is still a rare shell, and found only in the Cor. Crag of Sutton, so far as I know. 
In ‘ Brit. Conch., vol. iv, p. 425, Mr. Jeffreys has described a new species of Bullea, 
under the name of Urtriculus (Bulla) ventrosus. This does not appear to be the same 
as the Crag ventrosa, and his use of the name vendrosus may give rise to confusion. I 
propose that his shell be called ventriculosus. 
Amphisphyra globosa, Loven, is closely allied to Bullea ventrosa, but it is described 
in ‘ Brit. Conch.’ (Urtriculus globosus, vol. v, p. 223, PI. CII, fig. 8) as having “ slight, 
indistinct, and irregular spiral lines, which are only discernible with the aid of a 
magnifying power, and in certain lights.” If this be an essential character, g/odosa must 
also differ from the Crag ventrosa, as the latter has very distinct and regular spiral striee, 
otherwise I should have been disposed to regard the two species as identical. 
In the address of the President of the Geological Society for 1871, at page liv, is a 
“ Tist of Mollusca known hitherto as fossil only, and now discovered to be living in the 
depths of the Atlantic.” In this list is the name of Cy/chna ovata as a Coralline Crag 
fossil. I do not know this shell, nor can I ascertain to what the name refers. | 
Rineiouta BuccinEA, Broc. Crag Moll., vol. i, p. 22, Tab. IV, fig. 2. 
Localities. Cor. Crag, Sutton, and near Orford. Red Crag, Sutton. 
In a paper by the Rev. O. Fisher in the twenty-second volume of the ‘ Quarterly 
Journal of the Geological Society,’ p. 26, &. duccinea is given among a list of shells 
obtained by him from the Fluvio-marine deposit of Yarn Hill, near Potter’s Bridge, 
Southwold. The specimen fortunately was preserved, and on re-examination it turns out 
