A/ECA. 55 



polished and transparent. Length a quarter of an inch. 

 Animal dark grey above, lighter underneath, upper 

 tentacles nearly black, and clavate. 



Hal. It has a very wide distribution, and may 

 be found in almost every situation where vegetation 

 of any kind flourishes. Fields, hedge-rows, woods, 

 and waste places, amongst the roots of grass or moss, 

 stones, or buried an inch or two in the earth. Very 

 abundant. 



AZECA. Leach. 



Shell Spiral, sulcylindrical, smooth, remarkably shining; 

 aperture pyriform ; peristotne entire, thick and toothed, 

 not reflexed. 



Animal Like that of Zua. 



A. TRIDENS. Pulteney. PL VI, fig. 33. 

 Turbo tridens, Mont. 



Shell ovate, cylindrical, firmer than the preceding, 

 brightly polished and of a reddish brown colour; smooth, 

 with the exception of a few wrinkles near the suture. 

 "Whorls seven or eight and much depressed. Mouth 

 small and pyriform, guarded by three prominent teeth, 

 sometimes two additional small ones intervening. It 

 may readily be distinguished from its congeners by its 

 shining barrel-like form, with whorls scarcely projec- 

 ting at all, and its contracted mouth protected by 

 threatening teeth. Length about a quarter of an inch. 

 Animal dark. 



Hob. This pretty little shell is generally distributed 

 over the country, and though by no means uncommon, 

 is much more local than the preceding. Its usual 

 habitat is amongst the damp and luxuriantly growing 

 vegetation of woods. It is one of the mollusks which 

 seem to live in colonies, so that the collector may be 

 pretty certain when he finds one or two specimens, that 

 there are a number not far distant. It has not yet been 

 found in Ireland. 



