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SUPPLEMENT TO THE CRAG MOLLUSCA. 



Mr. Sowerby, when originally describing V. Lamberti in 1816, spoke of some recent 

 shells which he had seen (five in number) that resembled the fossil ; and the Crag shell 

 was treated by Sir Charles Lyell, in one of his early works, as belonging to a living 

 species, on the authority of M. Deshayes. The question was fully examined by Mr. 

 Charlesworth in the ' Magazine of Nat. Hist.' for 1837, pp. 37 and 90, and a figure is 

 there given by him of a specimen of Lamberti on parts of which the spiral striae (sharply 

 cut) to which I have referred are preserved. In most of the Crag specimens these striae 

 have been removed, but on a small one from the Coralline Crag in the collection presented 

 by me to the British Museum they are present. 



Columbella Borsoni ? Bellardi. Addendum, Plate, fig. 19. 



Columbella Borsoni, Bellardi. Monog. Columb. Foss., p. 14, t. i, fig. 11. 



— — A. Bell. English Crags, Proc. Geol. Association, 18/2, p. 24. 



Locality. Red Crag, Walton Naze. 



The specimen figured above, being that upon which this species was introduced into 

 the Crag fauna, has been kindly sent to me by Mr. R. Bell. It appears to me more to 

 resemble the figure of C. subulata {Murex subulatus, Broc), but I have not the fossils 

 from Piedmont for comparison. It seems to differ from C. sulcata (the common species 

 at Walton) in being more subulate with less convex volutions, in being quite smooth, and 

 in having a more distinct canal. It somewhat resembles the young state of C. sulcata 

 ('Crag Moll./ Tab. 5, fig. Id), but possesses the denticulations in the mouth which in 

 that species do not appear until the shell is full grown. The apex of our present shell 

 has been destroyed. Under these circumstances I am not satisfied that the specimen is 

 anything more than an aberrant individual of sulcata, but have felt that it was desirable to 

 have it figured. 



Columbella minor, Scacchi. Addendum, Plate, fig. 20. 



Columbella minor (Scac. in Phil.). Catal., p. 10, No. 12, fig. 11. 

 Buccinum minus, Phil. En. Moll. Sic, p. 190, t. xxvii, fig. 12. 



Locality. Cor. Crag, near Orford. 



A single specimen with this name has also been sent to me by Mr. Robert Bell, and 

 it is, I think, correctly referred. The Crag shell has the surface much eroded, but in its 

 living state it was probably quite smooth. 



Columbella abbreviata is given from the Red Crag by Mr. A. Bell in his list (' Proc. 

 Geol. Assoc.'), p. 28, but I have not been able to confirm that reference. 



