GASTEROPODA. 81 
Trocuus tumipus, Mont. Crag Moll., vol. i, p. 130, Tab. XIV, fig. 2. 
Localities. Red Crag, Sutton. Fluvio-marine Crag, Bramerton.  Chillesford bed, 
Bramerton, and Aldeby. 
This shell has been found by Mr. Reeve in the Chillesford bed at Bramerton, as well 
as in the Fluvio-marine Crag below, and by Messrs. Crowfoot and Dowson at Aldeby. 
TROCHUS ZIZYPHINUS, Linné. Crag Moll., vol. 1, p. 124, Tab. XIII, fig. 9. 
Localities. Cor. Crag, Sutton, Ramsholt, and near Orford. Red Crag, Sutton. 
Fluvio-marine Crag, Bramerton. Middle Glacial, Hopton ? 
This species is given in Dr. Woodward’s Nor. Crag list in ‘ White’s Directory,’ but 
I have not myself seen it from that Crag. Fragments of a large, finely striated Trochus 
are common in the Middle Glacial sand of Hopton, which, there can be little doubt, are 
of this species. 
‘TRocHUsS CINERARIUS, Linné. Crag Moll., vol. i, p. 131, Tab. XIV, fig. 7. 
Localities. Red Crag, Walton and Sutton. Middle Glacial, Hopton. Post Glacial, 
March. 
I have not met with any certain trace of this shell in the Fluvio-marine Crag or at any 
of the localities of the Chillesford bed, at which I am somewhat surprised. One tolerably 
perfect specimen and several imperfect have occurred in the Middle Glacial sand of 
Hopton, and I have it from the March Gravel. Some very injured apices of a Trochus 
sent me from Bramerton may not improbably belong to this shell, but they are not 
sufficient to justify my inserting it from that locality. 
TRocHUs NoDULIFERENS, S. Wood. Crag. Moll., vol.i, p. 126, Tab. XIII, fig. 6 (as 
L. papillosus) ; and Supplement, Tab. V, fig. 14. 
Trocuus Granosus, S. Wood. Catalogue, 1842. 
—  PaPpiLuosus, Da Costa. Crag. Mollusca, vol. i, p. 126. 
Localities. As in ‘Crag Moll.’ and Fluvio-marine Crag, Bramerton and Thorpe ? 
Middle Glacial, Hopton? 
In speaking of this. shell in the ‘Crag Mollusca’ I pointed out the differences which 
existed between it and the recent papillosus, Da Costa (granulatus, Born), but I did not 
consider that they justified my referring it to a distinct species. ‘The author of the‘ Brit. 
il 
