110 



The colour of the animal is grey, being striped with 

 a darker hue. Upper tentacles long ; lower ones very 

 short. 



A widely spread species. 



Balea fragilis is occasionally confused with immature 

 specimens of Clausilia nigricans, from which it does 

 not differ very much. 



Found on trunks of trees in moss and under the 

 bark, in walls, under stones, and on the ground 

 amongst lichens, especially Peltidea canina. 



Dr. Lister first described this species in the year 1678. 



In this neighbourhood it is rare, solitary individuals 

 having been found at Wollaton, Bulwell, Thrumpton, 

 and Highfield House. 



More distant localities are numerous, amongst which 

 may be mentioned Penzance, Cornwall (Millett), 

 Devonshire, Dorsetshire, and Kent (Montagu), Essex 

 (Sheppard), Suffolk (Paget), Norfolk (Bloxam), South 

 Wales (Jeffreys), Norwich (Bridgman), London (Grey), 

 Chaigeley, rare (Winstanley), Preston (Kenyon), Reeth, 

 near Richmond, Yorkshire, amongst moss on walls, 

 large and abundant (A. S. H. Lowe), Kendal, especially 

 near Lake Windermere (Gough), Newcastle (Alder). 



Scotland (Fleming), Ireland (Thompson), Isle of 

 Man (Forbes), and Scilly Islands (Millett). 



On the Continent, in France (Draparnaud), in Ger- 

 many (Pfeiffer), and in Sweden (Nilson). 



M.B.Chaniereaux remarks the eggs are deposited be- 

 tween July and October, from twelve to fifteen at a 

 time ; these are hatched in from fifteen to twenty days, 

 and are fully grown in a year. 



This is the only British species. 



