posterior branches at, or slightly in front of, the two notches which 
separate the terminal triangular tongue from the rest of the body. 
The position of the genital aperture has been given above; it lies 
always a little behind the bifurcation of the intestine The thick 
muscular cirrus pouch, usually somewhat curved in the shape of a 
sausage, presents a length of 2*2 to 3 mm. and an average width of 
o-6 mm. Its posterior end rests upon the anterior slope of the ventnl 
sucker, but there are some variations in its length in connection with 
the contraction of the body and the fulness of the seminal vesicle 
This latter occupies the posterior half of the pouch, describing, within 
it, a proportionally large number of small coils. The pars prostatica 
is short and the number of glandular cells surrounding it limited 
The ejaculatory duct is at first rather narrow, but widens somewhat 
towards its free end ; its coils are proportionally numerous also. The 
dimensions of the evaginated penis have been given above. The 
air) laige testicles are normally found at the same level somewhat 
1 nr the \entral sucker, but may in strongly contracted specimens 
more or less completely shifted to its sides. They' have in the 
g er number of my specimens a distinctly lobed shape, but 
im? P T 3 y t,1C IObeS may be SO sbort and l)road ‘hat the glands 
n Z, OPOSSeSS U mereIy notched outline. The number of lobes (or 
for the nth^t ^ f COnstantI y four for one (usually the left) and live 
‘ sexuL ,mn, f " ^ COnditi °- are inverted in the cases of 
well as in tlW V /' 1 • W * llch are not infrequently met with in this as 
35 ,n the following species. 
testicles, on the^eft^' S USUal ' y found a short distance behind the 
of the body j t j ' n C<)ses sexua l amphitypia on the right— side 
distinctly lobed ok ^ T ^ tbe s P e cimens with lobed testicles a 
those specimens, ondL* Th ^7 munber of ,obes bein £ tl,ree ln 
notched outline onl h ° ^ ,t,nd ’ ,n wb,cb the testicles show the 
less and appears coi^' * & °' ary ’ to °’ ^ oses its lobed outline more or 
The oviduct starts from^' S ° n . le irre ^ u ^ ar bulgings of its surface. 
into a well-developed shen tS i nCnr S '^ e and a ^ most immediately enters 
an opaque sharply out WrM ^ ' V,llcb ln cl eared specimens appears as 
'he ventral surface Th ° y y tbe Slde °f the ovary and close to 
average diameter of ^ ^ 3 fair,y ,on g LAURER’s canal of an 
ovary. It carries a small m '^ 1 ' rb °P ens to the outside in front of the 
I emmal rece Ptacle which I have never been able 
