GASTEROPODA. 31 



Length, -^ths of an inch. 



Locality. Red Crag, Waldringfield. 



The specimen figured has been obligingly sent to me by Mr. Canhani. It is in good 

 preservation, deeply coloured with Red Crag, and it appears to me not to be a derivative. 

 I have a fragment from the Coralline Crag near Orford that may probably be the same 

 species. 



The shell to which it appears to approach the nearest (judging from figure and 

 description) is Murex Haidingeri, Homes, 'Vienna Foss.,' vol. i, p. 22S, tab. xxiii, 

 fig. 12 ; but I think it is distinct. It differs from M. tortuosus, the well-known Crag 

 species, in having all its ridges frondiculated, and I have named it after the discoverer, 

 the Rev. H. Canham. 



Murex erinaceus, Linne. Supplement, Tab. II, fig. 11. 



Murex decussatus, Broc. Conch. Foss. Subapen., p. 391, pi. vii, fig. 11. 



Locality. Red Crag, Harwich ? Butley. Fluvio-marine Crag, Bramerton ? Post 

 Glacial, Kelsea Hill. 



At page 39, vol. i, of the ' Crag Mollusca,' is introduced a notice of this species as 

 having been found in the Fluvio-marine Crag at Bramerton. This was sent to Sir Charles 

 Lyell for examination, in whose possession I saw it. We were both of opinion that it 

 was a genuine Crag shell, but a short time previous to the publication of my first volume 

 it was unfortunately lost, and I was unable to have it figured. I have, therefore, now, in 

 order to complete the Crag Mollusca, given the representation of a recent specimen, and 

 since the Plate has been engraved, Mr. A. Bell has found a fragment of this species in the 

 Red Crag at Butley. 



In a paper by the late Mr. Webster, in the ' Trans, of the Geol. Soc.,' vol. ii, p. 220, 

 ] 814, is a List of Shells from Harwich (which, I presume, were intended as Crag species), 

 and in this is the name of Murex erinaceus ; but where these specimens are I cannot 

 ascertain. There are two or three in that List it would be desirable to examine (viz. 

 Trochus alliyatus, Venus yallina, and Pecten infirmatus), to learn what shells were in- 

 tended to be determined by those names. 



Mr. Jeffreys identifies a fragment of Murex erinaceus from the Kelsea Hill Gravel. 



