308 Rev. M. J. Berkeley’s Anatomy of 
left, passes towards the upper part of the great iobe of the testicle into 
the matrix, which is a long sac variously puckered and folded, exactly as 
in Helix; this at the extremity gives off a thread, which enters into a 
strong elliptic muscular body at one end of it, and this again enters by 
a narrow neck, on one side, into the bottom of the pouch in which also 
the male organ has its external orifice. The walls of this last pouch are 
marked with faint transverse furrows. At the same point also as that in 
which the matrix enters into the muscular body, the tube of the “ vessie”’ 
also is mserted. This is short, and the ‘ vessie’’ itself is situated almost 
at the top of the matrix. It is not very clear what is the use of so strong 
a body as that into which these organs enter together, except it have 
some power of causing an inversion of the neck by which itself is inserted 
into the outward pouch. I was unable to ascertain its internal structure, 
as I had but a single specimen in which the organs of generation were in 
a full state of developement. 
The lower portion of the testicle is shaped like an egg cut through its 
major axis; on the flat side at the point where the oviduct enters the 
matrix is a small lobe ; the testicle is continued in a fine line along the 
matrix, and at length at the top of the matrix gives off the vas deferens which 
after twice or thrice passing from right to left, and from left to right 
enters at one side towards the base into the bulbiform penis, which is 
placed at the base of the external pouch, and is continued through this, 
which it perforates by a tube which is adnate with the walls of the pouch 
on one side, in such a manner, that the bottom of the pouch hangs a 
little way down the top of the bulb like a little flap all round, except on 
the side on which the tube is adnate, for there the external surface of the 
pouch and bulb are perfectly continuous ; hence looking at the pouch and 
bulb externally a distinct line is seen about three parts round dividing the 
sac formed by the two, which externally is apparently one, into two portions. 
A correct notion of its structure may be formed from conceiving the 
neck of a Florence flask passing through the bottom of a common wine 
bottle, the neck being applied in its whole length to one side of the 
bottle ; and the hollow base of the bottle resting upon the top of the 
bulb of the flask. The bulb consists of a double coat, the inner being the 
thickest, and (probably by means of the structure of these coats) can reverse 
itself so as to pass through the above mentioned tube, and is drawn back 
