LAWSON, ON LIMAX MAXIMUS. 35 
about + inch long, and somewhat more than ;'; inch in dia- 
meter. 
The appendicular series embraces the egg-sac and cloacal 
glands. The first is a conical, papillary extension of the 
hinder portion of the outlet, its apex towards the left and 
front, and its base in the opposite direction. Interiorly, it is 
hollow, and receives at its greatest diameter the orifice of the 
vagina, which projects into it something in the manner of 
*‘prolapsus ani.” I do not know that any function has been 
ascribed to this cavity, and in the absence of any other office, 
and from the fact that, during the deposition of ova each egg 
remains within it for some time, I would suggest that it may 
serve to place the ovum in a position to receive the attach- 
ment of the peculiar threads which connect the deposited ova. 
It measures 2 inch or thereabouts in length, and has a thick- 
ness varying between + and 1 inch, and is composed of 
muscular and connective bands intermingled. 
The cloacal glands, so far as I am aware, have not been 
heretofore described, yet they are numerous and interesting, 
and deserve notice, because in Limax the multifid vesicles of 
the Helicidee do not appear; and, therefore, it is likely that, 
be thetr function what it may, it is here performed by these 
cloacal organs. They present in their entirety to the naked 
eye a purplish-brown, tripy, pilose aspect, and surround 
closely the internal or abdominal surface of the cloaca, from 
its anterior extremity to the egg-sac; their ducts pierce the 
cloacal walls, and may be seen externally (on the inner or 
non-abdominal side) as a cluster of minute apertures. If a 
thin, carefully prepared section be made, with Valentin’s knife, 
the following structures are observed. An immense quantity 
of dark follicles, lying in indifferent tissue, and recalling at 
first sight the Meibomian glandules of the eyelid; each 
follicle is compound, being composed of a central stem or 
channel, which, as it passes towards the outer surface, sends off 
three or more lateral branches, and to the end of each of these 
a dark, spherical, grape-like vesicle is united, which, when 
ruptured by compression, shows its contents to be a liquid 
matter containing endoplasts and granules (fig. 2). The 
common generative outlet I have not yet described, for as 
it belongs to no section in particular, it could not have 
been referred to till the other regions were disposed of. 
Divested of its glandular appendages, it is a very simple tube, 
about +inch long, and as wide also when distended; into its 
posterior part open the penis and the sperm-sac-duct; it is 
attached to the egg-sac behind, and in front, where it forms 
the generative aperture—which is closed by an elastic band— 
