CARYCHIUM. 199 



whitish or yellowish white hue, smooth to the eye, but 

 under a lens densely striolate lengthways. Whorls five or 

 five and a half, rounded, of moderate longitudinal increase, 

 divided by a simple profound, and not much slanting 

 suture ; penult volution more than twice as broad, in 

 general, as it is long ; apex very blunt. Body not 

 swollen, quickly commencing its anterior attenuation ; 

 basal declination convex and gradual. Peristome a little 

 interrupted. Mouth filling about two- fifths of the total 

 length, obliquely suboval, the regularity of the shape, 

 however, disturbed by the three teeth ; well rounded, 

 entire, and disposed to expand anteriorly. Both lips 

 broadly reflected ; the outer one prominent, somewhat 

 thickened internally, obliquely arcuated, and furnished, 

 rather above its middle, with a broad and strong tooth. 

 Inner lip with a narrow and much projecting tooth in the 

 middle ; pillar lip straightish at its left edge, not appressed, 

 provided near its anterior extremity with a subpliciform 

 tooth. Axis imperforated. 



Variety. With the teeth, especially that on the right 

 lip, more or less obsolete. Length one line. 



The animal of this little shell is creamy white, with 

 disproportionately large black eyes at the bases of the short 

 and blunt tentacula. 



This shell is found in all parts of the United Kingdom, 

 except, perhaps, in the extreme north ; it inhabits moist 

 places among moss and grass, often on the surfaces of 

 moss-clothed rocks, beside trickling water. 



