GASTEROPODA. 33 
Locality. Red Crag, Waldringfield. 
This is another shell for the notice of which I am indebted to Mr. Canham. It is 
from the Red Crag at Waldringfield. It is probably a derived specimen, and has been 
much rubbed and water-worn, but there is enough of it left, I think, to justify the 
reference. It is the only specimen I have seen. 
Preuroroma TURRIFERA, WVyst. Crag Moll., vol. i, p. 53, Tab. VI, fig. 1 (as P. turricula, 
Brocch.). 
Localities. As in ‘ Crag Moll.’ 
“This, so far as I know, is confined to the Red Crag. The specimens I found were 
uot restricted to the “Coprolite” bed, but were obtained from various parts of the Red 
Crag. ‘They are all more or less rubbed and worn, and are probably derived specimens. 
I have seen nothing more perfect than those previously figured. This is quite distinct 
from Murea turricula, Mont., and as this latter has precedence in date, our present shell 
must have its name changed. M. Nyst proposed to call the present shell Plewrotoma 
turrifera, and I have adopted his proposition. 
PLEUROTOMA NopIFERA, ? Lamarck. Supplement, Tab. VII, fig. 6. 
PLEUROTOMA NODIFERA, Lam. Hist. des An. sans Vert., 2nd edit., t. ix, p. 353. 
Locality. Red Crag, Waldrinefield. 
The specimen figured is from the nodule workings at Waldringfield, and is in a 
mutilated condition, its true character being obscured. It is probably an extraneous 
fossil, but it has the colour of the true shell of the Red Crag. The nearest species I can 
compare it with is the above, but it is very doubtful, and I am unwilling in its present 
state to consider it a new species. The specimen has one row of prominent nodules 
(fourteen in the last remaining volution), between which and the suture is a shallow and 
curving sinus, as shown by lines of growth. P/. nodosa, Bellardi, has a similar row of 
nodules, but the form of that shell is different. The specimen is from the cabinet of Mr. 
Canham. 
PLEUROTOMA INERMIS, Partsch. Crag Moll., vol. i, p. 55, Tab. VII, fig. 1, as P. 
porrecta. Supplement, Tab. III, fig. 2 a, 6. 
PLEUROTOMA INERMIS, Partsch, 1842, fide Hornes. 
= —  Hornes. Foss. Moll., Vienna, vol. i, p. 349, t. xxxviii, fig. 10, 
1856. 
— NivaLE? Lovén. Ind. Moll. Scand., p. 14, 1846. 
