10 SUPPLEMENT TO THE CRAG MOLLUSCA. 
It is a very aberrant form of Columbella. The young state of the Crag shell much 
resembles Buc. minus, Phil.; it has then a sharp and plain outer lip and ‘a longer 
canal (see ‘ Crag Moll.,’ Tab. II, fig. 2, 7). A fragment, consisting of the outer lip with its 
denticulations, and a little of the exterior of the shell on which the striated markings are 
visible, obtained from the Middle Glacial of Hopton, seems referable to this species. It 
is given in Dr. Woodward’s Norwich Crag list as a Bramerton shell, but I have not seen 
it myself from there. 
Pyruna reticunata, Lamarck. Crag Moll., vol. i, p. 42, Tab. II, fig. 12. 
Locahties. Cor. Crag, Ramsholt. Red Crag, Waldringfield, Walton Naze. 
In the Appendix, p. 311, vol. 1, I stated that I thought the cast of Pyrula figured 
(Tab. XXXI, fig. 6) was the same as the one previously figured from the Coralline Crag, 
and the specific name reticulata was in consequence proposed to be altered. I now think 
they belong to two different species, and I here restore to the Cor. Crag shell the name 
reticulata originally given to it, and the Sandstone cast, which is of a different age from that 
of the Crag, may retain the name of acc/inis until it can be better determined. This Cor. 
Crag shell has been referred to P. condita, Brongn., by M. Nyst, and to P. cancellata, 
Grateloup, by Mr. A. Bell, and to P. subintermedia, Bronn, by Mr. J effreys. ‘T'wo or three 
specimens of what appear to be P. reticulata of the Cor. Crag have been obtained from 
the Red Crag. Mr. Bell gives it from Waldringfield. It is probably derivative in the 
Red Crag. Ho6rnes gives eight synonyms to P. reticulata. 
Cassis Sasuron, Brugwére. Supplement, Tab. VI, fig. 2, a, 6. 
Le Sapuron, ddanson. Senegal, p. 112, pl. vii, fig. 8, 1758. 
CasstDEA Sapuron, Brug. Ency., p. 420. 
Locality. Red Crag, Waldringfield. 
This has been obtained from the diggers in the Red Crag at Waldringfield by 
Mr. Canham. It is probably an extraneous fossil, and derived from some anterior 
formation. ‘The shell has undergone a good deal of water action, and I cannot perceive a 
trace of striation upon the surface ; still, it so appears to correspond in all other respects 
with the species to which I have referred it, that I imagine the striz have been rubbed off, 
or the outer surface has decorticated away, as it is quite smooth ; it is also alittle disfigured 
by the loss of a portion of its canal, but this was probably done in the lifetime of the 
animal and clumsily repaired. 
This is a living species, with an extensive geographical range, being found on the 
coast of Spain, Portugal, and Algiers. It is a fossil of the Bordeaux beds and the Vienna 
basin, and M. Nyst gives it from the “Crag gris” of Belgium, and it may possibly have 
lived in the Coralline Crag Sea. 
