Land-slugs and Glass-shells 337 



little dark brown creature, with a paler mantle, and 

 exuding a thin colourless slime. Its lengtli is some- 

 thing between one-lialf and three-(|uarters of an inch. 

 It inhabits marshy meadows, but is very local. The 

 Tender Slug (X. tenelhis) is of similar dimensions, 

 but in colour it is almost transparent greenish white, 

 Avith black head and tentacles. The slime is viscid, 

 and orange coloured. It is a very local species, the 

 only places recorded for it being Shetland and 

 Northumberland. 



In all the foregoing species tlie mantle is wrinkled 

 in concentric lines as described for L. maximus ; but 

 in the two followino- the elevations of the mantle 

 take the form of little knobs instead of lines, so 

 that it is said to be shagreened. On this account 

 they are placed in a sub-genus, Am alia. The 

 Keeled Slug (L. carinatus) is about 2i inches long, 

 of a yellowish or reddish-brown colour speckled 

 with black or dark brown, the back with a 

 prominent keel from mantle to tail of a lighter tint 

 than the ground colour, and usually amber coloured. 

 The oblong mantle has a dark line on either side. 

 The foot has a pale margin, and the thick adhesive 

 slime is colourless. This is a common species, and of 

 o-eneral distribution. Thoudi it will take earth- 

 worms, caterpillars, and its younger relations as a 

 change of diet, it is distinctly a vegetable feeder, and 

 the author of considerable havoc in gardens and 

 fields. The Small Black Slug (L. gagafps) is of similar 

 dimensions, but its colour is variable — black, slaty, 

 red, brown, or even yellowish with darker markings. 

 The head and tentacles slate coloured, anrl tlie mantle 

 lar<rer than in L. carinatus, forming two lobes, with 



