62 MOLLUSCA FROM THE CRAG. 



11. Clavatula l^vigata(?). VML Tab. VII, fig. 12, 12 a. 



Pleurotoma l^vigatum. Phil. En. Moll. Sic. vol. i, t. 11, fig. 17- 



CI. Testa fusiformi, tiirritd, subulatd ; transversim tenuissime striata , anfractibus plani- 

 usculis, contiguis ; aperturd longitudine totius testes trientem vix ce(ptante ; canali hrevissimd. 



Shell tuiTeted, tapering, and fusiforai ; with an ovate or elongated aperture ; 

 whorls slightly convex, finely striated transversely, more coarsely so at the base, with 

 a short and wide canal, columella slightly incurved, outer lip sharp, and smooth within. 



Axis, ^ of an inch. 



Locality. Cor. Crag (.'), Sutton. 



Red Crag, Walton Naze. Recent, Mediterranean. 



A few specimens only of this species have come into my possession, and those 

 unfortunately are not in good condition. Mr. Bowerbank has also lent me two speci- 

 mens from Walton Naze ; but they are unfortunately in no better condition than my own. 

 I feel, however, unwilling they should not be represented. It much resembles Pleu- 

 rotoma lavigatum, Phil. (vol. i, p. 199, t. 11, f. 17), and if it were not for his description, 

 " lavissima,'' I should have little doubt of their identity ; our shell is distinctly 

 striated over the body of the whorls, and more coarsely so around the base. The 

 obsolete costae are scarcely visible, from the bad condition of the specimens, and there 

 is a visible depression at the upper part of the whorl, caused by a deep sinus a little 

 below the suture. 



12. Clavatula turricula. Mont. Tab. VII, fig. 13 a, 13 3. 



MuKEX TDRRicuLA. Mont. Test. Brit. p. 262, t. 9, fig. 1, 1803. 



— ANGULATUS. Bon. Brit. Shells, t. 156. 



— PUNCTATUS. Woodward. Geol. of Norf. t. 3, fig. 28, 1833. 



Pleurotoma clavula. Bigard. Mem. de la Soc. Geol. de France, 1837, torn, xi, pt. 2, p. 291. 

 Defeancia nobilis. M'uller. lud. Moll. Grcenl. p. 12, 1842. 



— Woodiana. - - - - p. 13. 

 Fusus PLiCATiLis. Bean. MS. 



CI. Testa turricula, ovato-fusiformi ; anfractibus convexiusculis, superne angulatis ; 

 longitudinaliter costulatis ; transversim et rugose striatis ; apertura ovatd, canali brevi. 



Shell turriculate, ovately-fusiform ; whorls about eight, slightly convex, angular at 

 the upper part; longitudinally costulated, with 14 — 16 shghtly elevated ribs in the last 

 volution, crossed by coarse transverse striae ; apertm'e subovatc, ending in a short and 

 rather wide canal. 



Axis, I of an inch. 



Locality. Red Crag, Sutton and Walton. 



Mam. Crag, Bramerton and Bridlington. Recent, British and North Seas. 



This is by no means a rare species in the Red Crag. It is rather an aberrant 

 form of this genus, having the sinus indistinctly marked by a slight indenture at the 



