74 SUPPLEMENT TO THE CRAG MOLLUSCA. 



Natica proxima, S. Wood. Crag Moll., vol. i, p. 143, Tab. XVI, fig. 4 ; Supplement, 



Tab. IV, fig. 12. 



Localities. Cor. Crag, Ramsliolt. Red Crag, Butley. 



This shell has been described as living in British and Mediterranean seas under the 

 name N. sordida of Philippi, by Forbes and Hanley (' Brit. Mol./ vol. iii, p. 334), and 

 by Jeffreys (' Brit. Conch./ vol. iv, p. 219). As, however, Philippi's name was two years 

 subsequent to that (proximo) given by me in my ' Catalogue ' of 1842, I have retained it 

 under my own name. I have now obtained a specimen from the Red Crag, Butley, 

 which is represented in Supplement, Tab. IV. N. proximo,, S. Wood, is referred by 

 Weinkauffto N.fusca, De Blain, to which species the author of ' Brit. Conch./ in vol. v, 

 p. 215, also refers sordida. 



Natica helicina ? Brocchi. Supplement, Tab. IV, fig. 8, a, b. 



Nerita helicina, Broc. Foss. subap., p, 279, t. i, fig. 10, 1814. 



Natica — Homes. Foss. Moll, des Wien. Beck., vol. i, p. 525, t. xlvii, figs. 6, 7. 



Localities. Cor. Crag, Sutton. Red Crag, Walton Naze, Essex. Bentley, Suffolk. 

 A few specimens of what I imagine to be the species above referred to have recently 

 been found by myself at both the above localities. 



Natica Alderi, Forbes. Supplement, Tab. VII, fig. 27. 



Natica Alderi, Forbes. Make. Monen., p. 31, pi. ii, figs. 6, 7. 



— nitida, Forb. and Hani. Brit. Moll., vol. iii, p. 330, pi. c, figs. 2 — 4. 



— — Rose. Geol. Mag., vol. ii, p. 11. 



Localities. Cor. Crag, Gedgrave. Eluvio-marine Crag, Yarn Hill. Middle Glacial, 

 Hopton and Billockby. Post-glacial, March and Kelsea Hill gravels and Nar. Brick-earth, 

 at West Bilney, and East Winch (Rose). 



Five specimens belonging undoubtedly to this species have been found by Mr. Rose 

 in the Nar. Brick-earth, one of which is figured as above. These shells have the exterior 

 quite perfect, smooth, and glossy, but I am not able to see the remains of any coloured 

 markings, and they most probably belonged to the white variety. Some specimens of 

 this shell (but none full grown) have occurred in the Middle Glacial sand of Hopton and 

 Billockby. I am inclined to think that the shell described in ' Crag Moll.' (vol. i. p, 142, 

 Tab. XVI, fig. 1) from the Red Crag, as N. Guillemini belongs to the present species, or it 

 may be the young of N. catenoides. 



