192 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
rami go back as far as the ventral sucker. The testes 
are two round or ovoid bodies, situated one on each side 
of the ventral sucker, and in almost the same transverse 
plane, so that im a side view one hides the other. The 
ovary les immediately behind the ventral sucker. The 
region of the body behind the ventral sucker is almost 
entirely occupied by the capsules containing the embryos, 
but there is a very large excretory vesicle at the posterior 
extremity. The vitellaria appear to lie immediately 
round and mostly in front of the ventral sucker. 
The vesicula seminalis and cirrus lie immediately in 
front of the ventral sucker, and the genital opening is 
situated well towards one side.’ Ini most of my specimens 
the cirrus was protruded, and appeared to be armed at 
its tip by a loosely arranged bundle of short straight 
spines. 
A Hake with degenerated parasites in the muscles. 
In April last a piece of flesh from a hake, caught on 
the West coast of Ireland, and landed at Fleetwood, was 
sent to the Piel Laboratory. Mr. Driver, the Fish 
Inspector for Bradford, who sent the piece of flesh, 
informed us that it was a fair sample of a hake which had 
been condemned as human food. The muscles of the fish 
were permeated by small, dense black particles arranged 
in rows. Usually there were two or three of these 
particles in a row, but occasionally there were more. As 
a rule the rows were parallel to the general direction of 
the muscle bundles, but occasionally they ran athwart 
the latter. Further than this they showed no arrange- 
ment. Dissected out from the muscle tissue, and 
examined under the microscope, the little black particles 
showed no structure, and were almost perfectly opaque. 
Fig. 2, Pl. III, represents the appearance of a small 
