There is a variclv named H. CreneRa, which is re- 

 markable for the raised bands or belts which cross the 

 shell. The anim.il is described as different, and to in- 

 habit damp places. Very manv examples, both of the 

 common form of H. pukbella and the var. crenelia. 

 procured from the neighbourhood, have been carefully 

 examined, but no difference can be found in the ap- 

 pearance of the animal in either form, and the var. 

 crenella is most abundant in dry situations. 



Added by Boys, in 1784, in ''Walher's Minute Shells." 

 The var. crenella was noliced by Lightfoot, in 1786, 

 see " Philosophical Transaiiions '' 



We learn fromM. BouchardChautereauxlhat it lays 

 eg^rs from July to September, ten to twenty at a lime^ 

 which batch in from fifieen 'o twenty days, and arrive 

 at raatuiily in a year. 



Our localities are, Highfield Hou^e, wliere it is rather 

 common, Oxton, Bulwell, Beeston, and Stanton-on-the- 

 Wolds, where it is r ire. 



It is well distributed in England, Scotland, and Ire 

 land, being found at Penzance (MilieH), Bristol (Mil- 

 ler), Wilts, Kent, and Dorset (Montagu), Essex (Shep- 

 pard), London (Grey), Suffnlk (Pp.gpt), Norwich 

 (Bridgman), Stone, Bucks. (Rev. J. B. ReiiHe), Grant- 

 ham (The Author), Calke Abbey, Dtrbyshire (Bloxam), 

 Kendal (Gough), and Newcastle (Alder). 



Dublin and Portraarnock Rabbit Burrow (Brown), 

 Lough Strangfnrd (Thompson), Carolina Park, near 

 E<linburgh (Brown), Isle of Man (Forbes), Scotland 

 (Fleming), St. Mary's Island, Scilly (Millett). 



Abroad, it occurs in Germany (Pfeiffer), Corsica 

 (Payradeau), in North America (Ferussac), France 

 (Draparnaud), and to the north of Swrdtn (Nilson) 



Mr. Morris has f mnd it fossil in mamuialiferons crag 

 near London. 



