176 HELICID^, 



being visible through the shell ; the last whorls tinged with a 

 very pale reddish-brown passing into whitish in the upper 

 whorls," y.6\, May, 1877. This variety was found near Ham- 

 mersmith by Mr. J. W. Taylor. 



B. Margin of clausium notched near its base. 

 4. C. lamina'ta,* Montagu. Pl. IX. 



Body reddish-black or greyish-brown above, dirty grey beneath, 

 tubercles rather large, prominent and close-set ; tentacles rather 

 short and thick, diverging at their base, reddish-brown, upper 

 pair very slightly conical, and indistinctly tuberculated, bulbs 

 somewhat swollen, lower tentacles rather more conical and of a 

 darker colour than the upper pair; foot dark greyish-brown, 

 slightly rounded in front, gradually narrowing towards the tail ; 

 Imgiial ribbon with 120 rows of 51 teeth = 6120. 



Shell somewhat spindle-shaped, thin, almost transparent, 

 glossy, of a yellowish-brown colour with sometimes a slightly 

 reddish tint, nearly smooth, but marked in the line of growth 

 with fine close-set striae, which are stronger towards the suture 

 and base of the shell and only visible under a lens ; periphery 

 rounded; epidermis thin; whorls 12, somewhat compressed, 

 gradually increasing ; spire tapering, apex obtuse ; suture 

 shallow, somewhat oblique ; mouth roundish-oval, less angular 

 above than in the foregoing species, and with much stronger folds 

 on the base of the penultimate whorl, as well as three or four 

 labial plaits, which in consequence of the transparency of the 

 shell are distinctly visible from the outside ; there are no ridges 

 or denticles between the two folds on the base of the penultimate 

 whorl ; outer lip white, thick ; basal crest slight ; umbilicus 

 minute ; clausium deeply notched on its margin near the base. 



Inhabits woods, among dead leaves, on fallen 

 branches, and on the bark of trees, especially the 

 beech, in many parts of England, as well as in Wales 



Having plaits or folds. 



