210 INTRODUCTION. 
buccal body. The retractor muscle of the latter is split 
into two bands as in Arion, but one stronger. There are 
also two small retractor muscles to the lower lip. The 
oesophagus is comparatively long. The stomach is cylin- 
drical and sacculated, and, posteriorly with the small 
intestine, forms a wide cul-de-sac. The small intestine 
is like that of L. campestris and Arion. The salivary 
glands occupy a position on each side of the oesophagus. 
The ducts are tortuous. 
Vagikula. The buccal body possesses no retrac- 
tor muscle. The dental plate is broad, and, upon the 
anterior surface, has a pectinate appearance, from the 
numerous ridges upon it. Its cutting edge is devoid of 
the conical toothlet. The oesophagus is moderately long 
and capacious. The stomach is cylindrical and saccu- 
lated, and posteriorly forms a deep, capacious cul-de-sac, 
independent of the small intestine. It is strongly mus- 
cular and shining, the transverse muscular fibres being 
very distinct. The anterior hepatic duct opens into the 
angle formed by the cul-de-sac and the intestine, the 
posterior into the fundus of the latter. The small intes- 
tine is pretty uniformly cylindrical, and holds the usual 
course to near its termination in the rectum, when to 
reach the latter it turns abruptly backward, and joins it 
on the right side, just posterior to the middle of the 
body. The rectum is straight, and proceeds backwards, 
along the right side of the body, within the pulmonary 
cavity, and terminates between the extremity of the tail 
