suckers varying between about 13 : 12 and 15: 12 is therefore fairly 
similar to that in Cion, sinensis, but in actual size the suckers are 
quite different. Among the specimens at my disposal there is none 
with pigment-granules in its parenchyma. The yolk-glands normally 
have the same extent as in Cion, sinensis, but present similar 
variations in regard to the relative position of their anterior and 
posterior terminations as in that species. It may also happen that ..I 
the groups of follicles of which they are composed some remain 
undeveloped, but this occurs, so far as may be inferred from my 
limited material, much more seldom and the actual state of things is 
perhaps best described by saying that the absence of one . ir sewn I 
groups of follicles is the rule in Cion, sinensis, and the exception in 
Cion, endemicus. The seminal vesicle ends (so far as visible) at 
about the limit between the first and second thirds of the length -a 
the uterus; this character, however, had better not be considered a 
distinctive because it may vary. 
The eggs have about the same length as those of the preceding 
species (0*026 mm.), but their width is decidedly somewhat smaller, 
amounting on an average to o - oi5 mm. with the lower limit at 0-013. 
the upper at o-oi6mm. The narrowing towards the anterior end is 
in the main not so marked and the margin of the rather flat lid nm 
so sharply projecting as in Cion, sinensis (see fig. 8); but these 
differences are on the whole very slight and not recognisable in r.i 
specimen. With regard to the colour of the uterus as a whole, van.i 
tions may be found similar to those described in the preceding spe* - 
Clonorchis endemicus, according to existing records, is vm 
common in Japan, and presumably so in Annam and Tonkin ton. In 
Japan the localities especially stricken with the parasite are situated 
on the sea-shore; it is possible therefore that its geographical i.mgr 
chiefly extends along the shore in the other localities also. 
Apart from Man, the species is reported to have been found in 
certain animals of Japan, such as cats, dogs and hogs. Several 
specimens taken from the latter host, which I owe to the kindness of 
rofessor J ANSON, of Tokyo, are indeed Cion, endemicus, for tin v 
present all the peculiarities of this species. I am, however, somewhat 
doubtful with regard to the statement that it inhabits the liver 
ot the cat also- at least as a normal parasite of this animal, in 1880. 
iJIMA after an examination of specimens derived from this source 
