CYLINDRITES. 479 



429. Cylindeites attenuatus, Lijcett, 1850. Plate XLIII, figs. 15 a, 15 6. 



1850. Cylindeites attenuatus, Lycett. Ann. Mag. Nat. Hist., 2nd ser., vol. vi, 



p. 418. 

 1853. — _ _ Proc. Cotteswold Nat. Club, vol. i, 



p. 79. 

 Syn. — GEADUS, Lycett. Op. et. vol. cit. 



Cf. also — GEADATUS, Cossmanti, Gast. Terr. Jur. p 76, pi. iii, fig. 50. 



Description. — Height 8 to 10 mm. and about two and a half times as long as 

 wide ; the shell is cylindro-conical, with a short conoidal spire, consisting of about 

 six whorls which are narrow and step-like, with sharp edges. The body-whorl is 

 flattened and attenuated towards the base. The posterior portion of the aperture 

 is extremely narrow, and the twist on the columella not very strongly marked. 



Relations and Distribution. — The strongly step-like character of the spire-whorls 

 is a characteristic feature. Rare in the Inferior Oolite at Leckhampton. 



430. Cylindrites bbevispira, sp. nov. Plate XLIII, figs. 17 and 18. 



Description. — Height 6*4 mm., width 4 mm. Shell sub-cylindrical, wide at top 

 and much narrowed towards the anterior extremity. The spire is very low, but 

 the margin of each spire-whorl projects slightly beyond the margin of the body- 

 whorl, so that the figure of the spire is that of a very depressed, though regular 

 cone. There are about six whorls in all, the margin of each presenting a sharp 

 upturned edge with a slight hollow between. The body-whorl is pyriform. 



Relations and Distribution. — Differs from Cy. attenuatus in its pyriform rather 

 than cylindrical shape, its greater proportional width, and in having a still more 

 depressed spire, whose whorls also are less flattened. Bears some resemblance to 

 Gy. bidlatus, Morris and Lycett, but in that species the spire is sunken. 



There are five specimens in my Collection from the Lincolnshire Limestone of 

 Weldon. 



431. Cylindkites tabulatus, Lycett, 1850. Plate XLIII, figs. 14 a, 14 6, and var. 



Weldonis, figs. 13 «, 13 b. 



1850. CxLiNURiTES TABULATUS, Lycctt. Ann. Mag. Nat. Hist., 2nd ser., vol. vi, 



p. 418. 

 1853. — _ _ Proc. Cotteswold Nat. Club, vol. i, 



p. 79. 



