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 costge 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. 



Pleuiiotoma Philberti. Michaud. Phil. En. Moll. Sic. torn, ii, p. 165, 1844. 



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



— — . S. Wood. Catalogue 1842. 



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

 iransversis clevatis, 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 costaa rather tuber- 

 culate ; 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. 



CI. Testa pusilld, ovato-fusiformi, anfractibus quatuor valide convexis, tumidis, prope 

 suturam depressis ; longitudinal iter obtuse costatis, costis 11 — 12, transversim siriatis, striis 

 ruyosis, confer lis ; aperturd ovatd ; canali brevi. 



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

 near the suture, with 11 — 12 obtuse costas, numerously and coarsely striated 

 transversely ; strife carried over the ribs ; aperture ovate ; canal short. 



Axis, ^ 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 



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