40 HELICID^ 



H. ACULEATA. MulUr, PI. VI, fig. 17. 



Shell minute, rather trochiform ; four volutions, with spines around 

 the upper part of the middle of them. 



This is much more common than the preceding, and 

 is found in somewhat similar localities, though it also 

 frequents drier situations. The beautiful rows of spines 

 with which this is fringed, are a peculiar and unique 

 feature, being dispersed in regular rows, and are very 

 large in comparison with the shell. The aperture is 

 nearly round. About the tenth of an inch in diameter. 

 Animal a peculiar grey colour. 



Hah. Woods, among leaves and under stones. A 

 bunch of moss from a hedge bank will sometimes yield 

 a number of specimens. It is widely distributed, but 

 scarce in some localities. 



H. FULVA. Muller. PI. VI, fig. 14. 



Shell small, trochiform, smooth and glossy ; dark horn colour. 



This shell and the two preceding have many charac- 

 teristics in common, being all of them more or less of 

 a trochoid conical form, with but small apertures. 

 H. fuha differs from aculeata and lamellata in having 

 no spines ; being perfectly smooth and shining. The 

 whorls are so close and intimately connected as to give 

 the appearance of a perfect cone with a flat base. It is 

 somewhat larger than the former two, being about the 

 sixth of an inch in diameter. Animal grey with long 

 tentacles. 



Hah. It is found in damp places upon stones at the 

 roots of grass and amongst dead and decaying vegetable 

 matter. Widely diffused. 



H. FUSCA. Montagu. PI. VI, fig. 24. 



Shell subglobose, transparent, horn colour, wrinkled, very thin ; 

 umbilicus narrow. 



There is no other species with which this can be con- 

 founded, H. revelata approaches nearest in form, but is 

 much smaller and of a decidedly green colour, whereas 

 fusca is of a delicate straw yellow, exceedingly thin, 

 and moderately transparent. About three-eighths of 



