LIMAX. 45 
Genus IIT—WLimax. 
None of the members of this genus are furnished 
with a slime gland. 
The members of this genus differ from the Arions 
in having their respiratory orifice nearer the posterior 
margin of the mantle. 
1. L. GacAtEs (jet). 
Almost as varied in colour as A. ater; its charac- 
teristic distinction is in the mantle being bilobed when 
the animalis extended. Length two and a half inches. 
It is found in many parts of the country among vege- 
table matter like other slugs, but it 1s local. 
2. L. MARGINATUS (margined). 
This mollusk is characterized by its strong carination 
from the mantle to the end of the tail. It is of various 
colours—yellowish, rufous brown, or, more usually, pale 
slate grey; two and a half inches in length. The shell 
is remarkable for its thickness. I have taken some in 
the Isle of Man nearly cubical in form. It is a common 
species on stone walls in the country, and is very active 
after rain. 
