GASTEROPODA. 15 



above name. Nystii is a less tapering shell, and possesses only half the number of varices, 

 and these more thick and prominent than those of our present shell. 



The same remark in reference to the genuineness of the shell as a species of the 

 Coralline Crag, which I have made in the case of the last described species (Reedii), 

 applies to the present case. 



Two imperfect specimens, or rather the larger portion of some small species belonging 

 to this genus, were found by myself many years ago in the Cor. Crag of Sutton, and 

 were retained in the hope that something better would turn up to enable me correctly to 

 describe them, or to refer to some previously described species. These are shown in 

 figs. 7 #, b of Tab. I, and exhibit the last volution with the aperture and its straight 

 canal perfect ; and as these constitute the principal portion of the shell, a fair idea of it 

 may be thus formed. The specimens very much resemble Murex Canhami, figured in 

 No. 14 of Tab. VII of my first supplement in their coarse spiral striations, but they 

 have not the prominent points or shoulders to the varices which that shell possesses, and 

 their canals are straight and narrower than that of Canhami. In their imperfect state I 

 have here called them provisionally Murex recticanalis. 



MUREX CROWFOOTII, 8. Wood. 2nd Sup., Tab. I, fig. 15. 



Locality. Cor. Crag, ? Boy ton. 



The specimen figured is imperfect, as shown by the fragment of the last whorl 

 which remains adherent to the preceding one, but in other respects is in finely 

 preserved condition. The cross striation, which is very thick and strong, resembles that 

 in M. toriuosus, but the form of the shell is much less elongated, and the number of dis- 

 tinct whorls preserved would seem to indicate that, when perfect, the specimen could be 

 only that of a much smaller shell than tortuosus. As it was placed in my hands by Mr. 

 W. M. Crowfoot, to whom it belongs, I have given it under the name of Crowfootii, 

 which will also serve to indicate the ownership of the specimen, for comparison in the 

 event of any one more perfect turning up. I am informed by Mr. Robert Bell that he 

 has obtained many specimens of M. tortuosustfrow the Coralline Crag, which confirms my 

 belief that this species which was long known from the Red Crag only, is merely present 

 as a derivative in that formation. 



TRITON CONNECTENS ? S. Wood. 2nd Sup., Tab. I, fig. 14 a, b. 



TRITON HEPTAGONUS, 5. Wood. Crag Moll., vol. i, p. 41, tab. iv, fig. 8, 1848. 

 CONNECTENS, id. Supplement to Crag Moll., p. 30, 1872. 



Axis, 1 inch. 



Locality. Red Crag, Waldringfield. 



A specimen of this genus has been sent to me by Mr. R. Bell, which he says is from 



