s 
176 SUPPLEMENT TO THE CRAG MOLLUSCA. 
tions ; the outer lip is more regularly rounded, and less expanded at the lower part than 
the lip in B. Dale, and it wants the projecting ridge at the base of the colummella. 
I have deferred giving this a regular diagnosis, but to leave it for confirmation as a 
species to the discovery of more specimens, and as it is most probably a shell extraneous 
to the Red Crag, some of its congeners may make their appearance in an older 
formation. 
Nassa pPusintina, S. Wood. Supplement, p. 14, Tab. 2, fig. 7. Addendum, Plate, 
fig. 24. 
Since this name was published I have been enabled to examine some recent specimens 
of that variable shell Buc. variabilis, Phil. (Nassa Cuviert, Payr), and one of its varieties 
appears to correspond with the fossil figured by me under the above name pusillina. Mr. 
A. Bell, in ‘Ann. and Mag. Nat. Hist.,’ September, 1870, and Mr. Jeffreys in his list to 
Mr. Prestwich’s Cor. Crag paper referred this shell to VV. Cuver7, Payr., and I here adopt 
that name in lieu of pusillina. 
Very recently Mr. Robert Bell has sent to me a specimen from the Red Crag of 
Butley, which I have had represented in Addendum Plate, as above referred to. The 
ribs appear only on some of the volutions, a feature which is exhibited by one of Phillippi’s 
figures of this variable species, and I have accordingly referred our present specimen to 
Cuvierc. 
Nassa musiva > Broc., is inserted in Mr. A. Bell’s list as a species from the Red Crag, 
and a specimen with that name has been sent to me by Mr. R. Bell. It 1s, however, in 
bad condition, and appears to me to be one of the varieties of JV. reticosa much rubbed 
and worn, 
Nassa labiosa, J. Sow., from the Crag, is, I still think, distinct from B. semestriatum 
Broc., but it seems to correspond with a shell called /abiosa by Beyrich, (‘ Die. Conch. 
Nordd. Tertiarb.,’ p. 140, Tab. 8, fig. 5 a—c). The Red Crag specimens of WV. /adbiosa 
are possibly derivatives from the Coralline Crag. 
Murex tscutptus, Dujard.? Addendum, Plate, fig. 9. 
Locality. Red Crag, Waldringfield. 
The figure referred to represents a specimen sent to me by Mr. R. Bell with the 
above name attached to it, and he tells me that it is identical with a fossil from Italy 
which he received from M. Seguenza with that name. I have, however, been unable to 
find this name in any publication known to me. M. Dujardin figures and describes a 
shell as 1. exiguus in his paper on the fossils of Touraine, ‘ Geol. Trans. of France,’ 1837, 
p. 296, Plate XIX, fig. 2, but our shell does not well correspond with it. It appears 
