GASTEROPODA. 57 



Axis, of an inch. 



Locality. Cor. Crag, Sutton. 



Red Crag, Sutton. Recent, British Seas. 



This elegant little shell has about seven whorls, which are ornamented with a 

 dozen costse in the last volution ; these are crossed by sharp elevated lines, which run 

 along the volutions ; they are rather broader over the ribs, and very sharp between 

 them, and are from six to seven in number. The outer lip is sharp, strengthened on 

 the exterior by a thickened obtuse varix or rib ; canal short, open, and slightly inflected. 

 It is by no means abundant in either the Red or Coralline Crag formations. 



2. CLAVATULA PHILBERTI. Mich. Tab. VII, fig. 5, 5 a. 



PLEUKOTOMA PHILBERTT. Michaud. Phil. En. Moll. Sic. torn, ii, p. 165, 1844. 



VARIEGATUM. Phil. En. Moll. Sic. vol. i, p. 197, tab. 11, fig. 14, 1836. 

 S. Wood. Catalogue 1842. 



Cl. Testa turritd, fusiformi ; anfractibus convexis, costis longitudinalibus lineisque 

 transversis elevatis, clathratis ; labro incrassato, intus dentato ; canali breviusculd. 



Shell turreted and fusiform, with about six convex volutions, longitudinally costated, 

 and decussated by coarse, elevated, transverse striae ; outer lip thickened within and 

 dentated. 



Axis, | of an inch. 



Locality. Cor. Crag, Sutton. Recent, Mediterranean. 



I have one tolerably good specimen of this species, with a few imperfect ones, and 

 have very little doubt of the identification. The striae are sharp and elevated, like 

 those upon the preceding species, but coarser, making the costse rather tuberculate ; 

 the lip is thickened within, somewhat contracting the aperture, and strongly dentated, 

 with seven or eight elevated teeth, and having a moderately sized sinus immediately 

 at the suture. The figure is scarcely elongated enough. 



3. CLAVATULA CASTANEA (?). Brown. Tab. VII, fig. 3, 3 a. 



Fusus CASTANEUS. Brown. Illust. Brit. Conch, pi. 48, fig. 43-44, 1827. 



CL Testa pmilld, ovato-fusiformi, anfractibus quatuor valde convexis, tnmidis, prope 

 suturam depressis ; longitudinaliter obtuse costatis, costis 11 12, transversim striatis } striis 

 rugosis, confertis ; aperturd ovatd; canali brevi. 



Shell small, ovato-fusiform, with four convex and tumid volutions ; depressed near 

 the suture, with 11 12 obtuse costae, numerously and coarsely striated transversely; 

 striae carried over the ribs ; aperture ovate ; canal short. 



Axis, i of an inch. 



Locality. Cor. Crag, Sutton. ? Recent, British Seas. 



I have but two specimens of this species, and these appear to resemble the figure 

 by Brown, referred to above. My specimens are thickly and rather coarsely striated, 



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