494 TROCHIDiE. 



is rather long, of a dark mottled madder-brown hue, paler 

 at the crenated extremity of the muzzle. The tentacula 

 are long, smooth, subulate, white or pinkish, and marked 

 down their centres by an orange-brown line. At the 

 inner sides of each tentacle is a very small almost rudi- 

 mentary capital lobe, and on the outer side a stout white 

 eye-peduncle bearing a greenish-blue eye at its extremity 

 with a black central point. On each side of the neck 

 is a large white plain-edged lappet. The side-lobes are 

 pale with brownish dots and markings, crenated at their 

 edges, and bear three subulate white or pale brownish 

 cirrhi on each, with minute rudimentary lobes at their 

 bases, recalling the appearance of the tentacular and 

 capital lobes. The sides of the foot are closely-painted 

 with rich reddish brown colour. The foot itself is ob- 

 long, truncated and obtusely angled in front, obtusely 

 pointed behind, and minutely crenated at its edges, which 

 are pale, whilst the central disk is of a bright salmon 

 colour. The opercular lobe is short. The branchial 

 plume is long and linear lanceolate. The margin of the 

 mantle projects slightly beyond the shell, and is plain. 

 The jaws are small, bent, and corneous. The tongue has 

 its central denticle escutcheon-shaped, with a broad in- 

 curved apex ; the laterals have slightly and the acces- 

 sorial greatly curved and narrow points. 



This handsome but common shell is found on all our 

 shores, and enjoys a range of from low-water-mark to fifty 

 fathoms, at which depth it lives on the Ling banks off 

 the Zetland shores. Its favourite habitat is in the 

 laminarian zone. The white variety (Lyonsii) is, per- 

 haps, most abundant in the Irish Sea. It is very plenti- 

 ful around Anglesea, in which district the smooth variety 

 with tumid whorls has been plentifully taken (M'Andrew). 



