A SUPPLEMENT TO THE CRAG MOLLUSCA. 
In the ‘Crag Mollusca’ I referred this shell doubtfully to Plewrotoma levigatum of 
Philippi, but the specimen there figured was not quite perfect. Mr. Bell has lately found 
one or two in better preservation, to which he has given the name of Pl. tenuistriata. 
As I am satisfied that this shell is distinct from P. /evigata, I have given it here under 
Mr. Bell’s name. 
PLEUROTOMA La&vicaTa, Phil. Supplement, Tab. VI, fig. 15. 
Localities. Red Crag, Walton and Butley. 
The above figure represents a specimen of what I believe to be the true form of 
levigata, found by myself in the Red Crag of Butley. Mr. Bell gives it also from 
Walton Naze. 
PLEUROTOMA CYLINDRACEA 2? Moller. 
DEFRANCIA CYLINDRACEA, Moller. Ind. Moll. Groenl., p. 13, 1842. 
MANGELIA CYLINDRACEA, Woodward. Geol. Mag., vol. i, p. 53, 1864. 
Locality. Upper Glacial, Bridlington ? 
This is given in Dr. Woodward’s Bridlington list with a query, but I cannot find a 
shell among the Bridlington fossils that will correspond with Midller’s description. 
PLevRoToMA sENILIS, S. Wood. Supplement, Tab. V, fig. 5. 
Locality. Red Crag, Waldringfield. 
The specimen figured was obtained by Mr. Canham from the Nodule pit at Waldringfield. 
It is much rubbed and worn, and the striz are nearly obliterated. The coste on the 
body whorl are, however, sinuated, from which I imagine it possessed a sinuated outer 
hip. Not being able to give it a correct diagnosis, I have called it provisionally P/. senilis. 
It is probably a derived specimen. 
PLEUROTOMA HISPIDULA, Jan. Supplement, Tab. III, fig. 3. 
RHAPHITOMA HISPIDULA, Jan., fide Bellardi. Mon. Foss. Pied., p. 92, t. iv, fig. 17. 
PLEUROTOMA DECUSSATUM, Phil. En. Moll. Sic., vol. ii, p. 174, t. xxvi, fig. 23. 
— — A, Bell. Ann. and Mag. Nat. Hist., May, 1871. 
Spec. Char. “ Testa fusiformi, plicis tenuibus longitudinalibus, lineisque transversis 
elevatis distantibus reticulata; anfractibus eque et parum convexis; apertura oblonga, 
spiram equante.” —Philippi. 
