56 PHYLLIVORA. 



found it in a garden at Lambeth. When the animal 

 deposits its eggs, the head and tentacles are drawn 

 in. See fig. 16. a, b, c, from Mag. Nat. Hist.vii. 226. 

 f. 39., exhibiting the animal in its different positions. 



In winter, they bury themselves from one to two 

 feet deep in the earth, and are most above the sur- 

 face from August to November. They chiefly live 

 on worms, and sometimes will attack slugs and 

 smaller specimens of their own species ; shells of 

 their own kind being sometimes found in their 

 stomach. 



The Testacella scutulum of Sowerby and Testa- 

 cellus Medii Templi of Mr. Tapping are very slight 

 varieties of the common species. 



Testacellus Mangel has a more developed shell, 

 the lateral grooves far apart in front of the shell, 

 and only 15 longitudinal series of teeth on the 

 tongue. 



Sub-division 2. Phyllivora. Mouth simple ; jaws 

 distinct, horny ; teeth numerous, four-sided, close 

 together, side by side, with a reflexed toothed 

 apex ; head tentacle and eye peduncles retractile 

 under the skin. Eyes at the apex of the club of 

 the peduncle. Herbivorous. 



The following account, of the teeth is abridged 

 from an elaborate paper by Mr. William Thompson 

 in Ann. and Mag. N. Hist. 51. 86. ; from which also 

 the figures are taken : 



" The tongue of the Phyllivora, generally, is a 

 thin expansible membrane, two thirds or three 



