ORDER PULMONARIA. A f 
disk, which occupies only the forepart of the back, and only 
covers the pulmonary cavity. It contains, in many species, a 
small oblong and flat shell, or at least a calcareous concretion, 
which holds the place of it. ‘The orifice of respiration is on 
the right side of this sort of sucker, and the anus is found at 
the edge of this orifice. ‘The four tentacula issue out and re- 
enter by being turned inside out, like the finger of a glove, 
and the head itself can be partly withdrawn under the disk of 
the mantle. The organs of generation open under the supe- 
rior right tentaculum. There is but one upper jaw to the 
mouth, in the form of a denticulated crescent, which enables 
them to gnaw herbs and fruits with great voracity, among 
which they make great hayock. ‘Their stomach is elongated, 
simple, and membranaceous. 
M. de Férussac distinguishes the ARIONS, in which the 
orifice of respiration is towards the anterior part of the shield ; 
there is nothing in the shield but calcareous grains. Such is 
Limax rufus, L., Féerussac, Mull. Terr. et Fluy., pl. i. and iii. 
which is to be met with at every step we take in wet weather, 
and which is sometimes almost entirely black.—Jdid, ii. 1, 2. 
The soup of this slug is made use of in maladies of the chest. 
And the LimAs, in which this orifice is towards the poste- 
rior part; their shell is often better defined. Such is 
L. maximus, L.; Lim. antiquorum, Feéruss. pl. iv. and 
vill. A. fi. 1.; ZL. Sylvaticus, Drap. Miill. ix. 10. 
Often spotted, or striped with black. Found in cellars and 
dark forests. 
L. agrestis, L., Féruss. pl. v. fi. 5—10. 
Small, without spots. One of the most abundant and most 
mischievous. 
VAGINULUS, Féruss., 
Have the mantle compact, without shell, and stretched over 
the whole length of the body; four tentacula, the inferior a 
