GASTEROPODA. 51 



Axis, I of an inch. 



Locality. Cor. Crag, Sutton. 



Red Crag, Walton-on-the-Naze. Recent, Britain. 



An abundant shell in the Red Crag. When I compiled my Catalogue it was 

 considered as distinct from the recent species of Montague, in consequence of its 

 having the canal shorter and more recui'ved. I have, however, since seen recent 

 specimens, corresponding in that character with our shell, in the cabinet of Mr. Hanley^ 

 and in all other respects it perfectly resembles the recent form. 



11. Trophon GRACiLius. 8. Wood. Tab. VI, fig. 14. 



Fusus GRACILIOE. S. Wood. Catalogue 1842. 



Tr. Testa elongato-fusiformi, gracili, fragili ; spird elevatd, suhiclatd; lineis elevatis 

 transversis cinctd ; longitudinaliter obsolete costatd ; anfractibus quinque,cotivexis ; aperturd 

 angustatd ; canali longiiisculd. 



Shell elongato-fusiform, slender, and fragile, with an elevated and tapering spire ; 

 volutions five, convex ; obsoletely costated longitudinally, with elevated transverse 

 striae ; aperture elongate ; canal wide, and slightly recurved. 



Axis, I of an inch. 



Locality. Cor. Crag, Sutton. 



But a few specimens of this species have come into my possession, and those, 

 unfortunately, are not in very good condition ; it may be considered, therefore, at 

 present a doubtful species. Traces of costse are visible only on the spire, while the 

 body whorl appears to be without them. It is a more slender shell than Tr. imper- 

 spicuum (fig. 12), with fewer costse, and the volutions more rounded; while the trans- 

 verse striae are fewer and more prominent. It has been figured more particularly for 

 the purpose of calling the attention of collectors to its elegant form. 



12. Trophon paululum. 8. Wood. Tab. VI, fig. 6. 



FnsDS PAULULUs. S. Wood. Catalogue 1842. 



Tr. Testd pusilld fusiformi ; apice aciito ; anfractibus qmnque convexis, ultimo cingulis 

 triJjus elevatis ornatd ; interstitiis cancellatis ; aperturd ovatd ; canali longiusculd. 



Shell very minute and fusiform; spire elevated, and apex acute; whorls convex; 

 the last one covered with three elevated transverse ridges, and having the intervening 

 spaces finely cancellated ; aperture ovate, with a canal moderately elongated and open. 



Axis, \ of an inch. 



Locality. Cor. Crag, Sutton. 



I have but one specimen of this pretty little shell, which may possibly be the fry 

 of some larger species, though I have not any that show such markings upon the 

 upper volutions. The upper whorls are worn smooth, and it is only on the body of 

 the shell that this cancellated ornament can be seen. It resembles in shape a small 



