SPECIAL ANATOMY. 0^5 
laterally and inferiorly at the posterior part of the buccal 
body ; the former passing inwards and forwards, the lat- 
ter forwards to the anterior extremity of the organ, which 
is free, and projects into the triangular, oval canal. The 
lateral fasciculi leave between them superiorly an inter- 
stice, at the bottom of which is found the lingual lamina, 
in the form of a tube, closed posteriorly, and open and 
reflected downwards and backwards upon the anterior, 
free tip of the organ. Into the posterior extremity of 
the lamina, the middle fasciculus of the retractor mus- 
cle of the buccal body is inserted ; and, just anterior 
to this insertion, a small, attrahent fasciculus, arising 
from the roof of the buccal body, posterior to the orifice 
of the oesophagus, which gets to the lamina by means of 
the interstice of the muscular organ superiorly. The 
teeth of the lingual lamina are arranged diagonally, from 
the middle line, in parallel rows, passing from within out- 
wards. 
The oesophagus issues from a fissure at the upper poste- 
rior line of the anterior third of the buccal body. It is 
long and cylindrical, and rather wider at its termination 
than at its origin. The stomach is irregularly cylindroid, 
and has a cul-de-sac at its commencement, projecting an- 
terior to the entrance of the oesophagus. The small intes- 
tine is capacious. 
The salivary glands are conjoined, so as to form a cir- 
cular collar around the posterior part of the oesophagus. 
The salivary ducts are long, and enter the same fissure 
of the buccal body at which the oesophagus issues. The 
