46 LIMACID 2. 
3. L. rLAyus (yellow). 
This is a large species, attaining a length of four 
inches; yellowish, speckled with black and white so as 
to form a network. It is covered with coarse oval 
tubercles. The head and tentacles are bluish; the 
slime yellow. The shell is characteristic, having 
the nucleus slightly projecting over one end. It is 
found in cellars and damp places throughout the 
country. 
4, L. agrestis (inhabiting fields). 
This is the well-known pest of London gardens, 
where it.is usually creamy white. Its common aspect 
is white, mottled with dark grey. It has a thin oval 
shell, with a membranaceous margin. Length one 
and a half inches. 
5. L. Livis (smooth). 
This is an active little creature, less than an inch in 
length, slender, very glossy, dark brown, mantle swell- 
ing behind and raised into a hump by the very solid 
shell. The shell is unguiform, very convex above and 
flat beneath, solid, nucleus terminal, margin sharp, 
and not membranaceous. It is found in the same 
