PROSOBBANCHIATA. 179 



Section C. Pullus papillary. 



a. Shell fusiform ; inner lip effuse ; columella plaits few. 



No. 1 1 7. Voluta Wetherellii. Sowerby. Tab. XXIII, figs. 4 a — d. 



Voluta Wetherellii. Sow. 1836. Lond. and Edinb. Phil. Mag., and Journ. of Science, 

 3d ser., vol. ix, p. 463- note. 

 — — Sow. 1840. Min. Con., vol. vii, p. 5 ; t. 612, figs. 1-5. 



V. testa fusiformi, elongatd, ad basin p arum emarginatd? in juventd concentrice lineald, 

 deinde Icevi ; lineis confertis, sublilissimis ; spird conicd, apice papillari : anfractibus sex vel 

 septem, convexis, marginibus ad spiram adpressis ; aperturd elongato-ovali ; columella sub- 

 rectdy triplicatd ; labro ? ; labio effuso. 



Shell fusiform, elongated, slightly produced in front ;' spire conical, elevated, and 

 terminating in an obtuse papillary apex : whorls six or seven, convex, with the margins 

 pressed against the preceding volutions, and presenting a broad, shallow depression, 

 which runs round the spire between the shoulder and the suture. The earlier whorls 

 are ornamented with numerous concentric raised lines ; these lines are much crowded, 

 and so very fine as to be searcely visible by the naked eye, and do not detract from 

 the apparently even surface ; the last whorl is smooth. Aperture of a lengthened oval 

 form, columella nearly straight, and furnished at maturity with moderately oblique 

 folds, of which the one in front is the smallest, and that in the middle the largest ; 

 inner lip widely spread over the body-whorl, but not extending backwards beyond the 

 suture ; the base, apparently, but slightly notched, as the columella does not present 

 any prominent ridge. The outer lip is not preserved in any specimen I have seen. 



This Volute presents a remarkably close analogy with the well-known Crag species 

 V. Lamberti ; but it is a longer, narrower shell, with a much smaller pullus ; and the 

 columella presents three unequal folds instead of the four nearly equal folds which 

 characterise that species. It appears to be confined to the lower formations in the 

 neighbourhood of London, and has not as yet been found, I believe, at Highgate. 



Size. — The actual dimensions cannot be stated accurately ; those of the largest of 

 the specimens figured must have been, axis, 5 inches, nearly ; diameter, 1 inch and 

 8-10ths, nearly. 



Localities. — Camden Town, Chalk Farm, Haverstock Hill, Hornsey, Copenhagen 

 Fields, Holloway, Whetstone, Potter's Bar, Bayswater, Brentford, Sheppey. 



