82 LIMACIDjE. 



Shell oval, thick, with well-defined lines of growth ; nucleus 

 somewhat prominent, nearly terminal. 



Inhabits all parts of the British Isles, commonly, 

 among decaying vegetable matter, and at the foot of 

 walls in gardens, and under stones. It is a voracious 

 slug, very destructive to garden produce, and it often 

 devours earthworms as well as the young of its own 

 species. It differs from Z. gagates in colour, its 

 mantle is not so large, and the respiratory orifice is 

 placed nearer the hinder edge of the mantle. 



B. Mantle concentrically striate. 



3. L. FLA'VUS,* LiNNfi. Pl. VI. bis. 



Body rather narrow in front, broader in the middle, tapering 

 behind and keeled towards the tail, which is pointed ; of a 

 yellowish colour, tesselated with white and black or dark brown, 

 coarsely tuberculated ; head and neck slate-colour ; mantle ob- 

 long, broadly rounded behind, with concentric and slightly 

 undulating wrinkles ; tentacles short, slate-colour ; foot bordered 

 with pale yellow, sole milk-white ; slime yellow. Length about 

 4 inches ; lingual ribbon with 166 rows of 123 teeth = 20,418. 



Shell oblong, or quadrangular, somewhat concave under- 

 neath, thin, with a membranous margin, lines of growth distinct ; 

 ?iucleus slightly prominent. 



Inhabits all parts of the British Islands, in cellars 

 and damp places in houses, as well as in moist woods, 

 under stones and at the roots of plants. It is an 

 active and very voracious slug. At night it leaves its 

 hiding-place and greedily devours all sorts of vege- 

 table, and animal refuse. 



* Yellow. 



