﻿ADDENDUM. 



177 



to be intermediate between the figure of exiguus and Buccinum lavatum, Sowerby. It is, 

 I think, a derived specimen. 



Trophon elegans, Charlesworth. Crag Moll., vol. i, p. 46, Tab. V, fig. 2; Addendum, 



Plate, fig. 13. 



At p. 98 of this Supplement I expressed my suspicions that this would prove to be a 

 Cor. Crag shell, and to be only derivative in the Red Crag. 



I have been confirmed in this by hearing from Mr. Canham that at a temporary 

 recent opening in the Cor. Crag at Sutton the shell shown in the above figure occurred in 

 numbers in association with numerous specimens of Voluta Lamberti and Cassidaria 

 bicatenata. All of these, however, were in such a decayed state that only the specimen 

 figured above could be extracted, and this is not full grown. Mr. Canham's Red Cray; 

 specimen measures 4| inches in length. 



It would appear from this that probably both T. elegans and Cassidaria bicatenata are 

 present in the Red Crag only as derivatives from the Coralline, for while V. Lamberti 

 (which by its occurrence at Yarn Hill is proved to have survived into the later part of the 

 Upper Crag) is common in the only portion of the Red Crag which is not leavened with 

 derivatives, viz. Walton, no trace of either Cassidaria bicatenata or our present Trop/ion has 

 ever occurred there. 



This shell is, I believe, quite distinct from any variety of Trophon antiquus, and is 

 specially distinguished by the apex, which is not obtuse or mammilated, and the apex 

 shown in Tab. VII, fig. 9, of this ' Supplement,' which I had imagined might be that of 

 Buc. Dalei now belongs, I have now no doubt, to the present shell. 



Fusus despectus, Linne, is given as a Red Crag shell by Mr. Jeffreys, and also by Mr. 

 Bell, as from Sutton, Bramerton, and Thorpe. This I imagine must be the var. of 

 T. antiquus with prominent carinae like the shell figured 'Crag Moll.,' vol. i, Tab. V, 

 fig. 1 b, which Edward Forbes ('Mem. Geol. Survey,' vol. i, p. 426, 1864) referred 

 to Fusus despectus. 



A very imperfect specimen has been sent to me by Mr. Canham with the locality 

 " Red Crag, Waldringfield," which may probably be Fusus Waelii, Nyst, spoken of by 

 Sir Charles Lyell, ' Quart. Journ. Geol. Soc./ vol. viii, pp. 301 and 316, and described 

 by Beyrich, p. 271, Taf. 20, figs. 1 — 3. This is, no doubt, a derivative. 



Trophon Norvegicus ? Supplement, p. 21, Tab. V, fig. 14, and Addendum, Plate, 



fig. 16. 



Locality. Red Crag, Sutton. 



In Mr. Alfred Bell's paper on the English Crags, ' Proc. Geol. Assoc.,' vol. 2, p. 28, 



