HELICID^. 117 



each other, leaving only the skin of the back ; and 

 they will also sometimes attack sickly individuals of 

 their own species. 



14.4. 'LiM.&n agrestis Linn. Milky Slug. Reddish or 

 grey, often spotted with brown ; body furrowed 

 with interrupted lines, with a short oblique keel ; 

 the mantle large, ovate, with circular lines, 

 rounded behind ; sheh 1 small, very thick and hard, 

 variously formed, and rarely concave, (t. 3. f. 17.) 



Limax agrestis. Linn. S. N. ; Nunneley, 1. c. t. 1. 

 f.4. 



Limax filans. Hoy, Linn. Trans. ; List. Aug. t. 

 3. f. 16. 



Limacella obliqua. Brard, 148. t. 4. f. 7, 8. 17, 

 18. (Shell.) 



Limacellus obliquus. Turt. Man. ed. 1. t. 3. f. 17. 



Inhab. fields. 



Varies greatly in size and colour, from white to 

 pale reddish, and from grey to blackish, but is easily 

 distinguished by its short keel, which is always placed 

 obliquely. When irritated, it pours out a milky white 

 mucus, which leaves a white streak when it is dry. 



* # * * 



15. 5. LIMAX Irunneus. Brown Slug. Blackish brown, 

 rather rugose, longitudinally ridged; mantle 

 paler, yellow behind, marked with fine trans- 

 verse-ridges ; tentacles short ; neck longer than 

 the shield. 

 Limax brunneus. Drap. Tabl. 104., Hist. 128. ; 



