312 Rey. M. J. Berkeley’s Anatomy of 
Future observations must show whether amongst the different species 
of Helicolimaces (Vitrine) there are forms requiring separation ; at 
present there seems no sufficient reason to doubt their general agreement. 
I would remark that I have used the word Helicolimax throughout 
merely to keep up an uniformity with Mr. Lowe’s paper, and to avoid the 
possibility of confusion. Vitrina appears by far the most preferable 
name, as it asserts nothing more than the glass-like appearance of the 
shells, whereas Helicolimax would lead us to suppose the shells exactly 
intermediate between the two genera of which the name is compounded, 
which is scarcely strictly true. 
References to the Figures. 
N. B, All are more or less magnified. 
Tas. Supp. XLVIII. 
Fig. 1. Represents the mass of the mouth and intestines, the nervous 
cord having been removed from its situation, above the 
origin of the esophagus. The stomach is in its state of 
contraction. 
m. Mass of mouth. 
n,n. Salivary ducts. 
o. Gisophagus. 
p- Cartilagineous cone of the tongue. 
q- Retractor muscle of mass of the mouth. 
r. Salivary glands, covering upper portion of the stomach. 
s. Lower portion. 
t. Rectum. 
u, Anus. 
Fig. 2. Part of the cesophagus, stomach and duodenum, from which 
the salivary glands have been removed; the upper por- 
tion of the stomach is in its extreme state of contraction, 
o. (Esophagus. 
v. Upper portion of stomach, 
Lower portion. 
