32 
This parasite has been reported for man in Prussia, and AVinogradoff 
found it in Siberia in 8 (or 9) out of 12d post-mortem examinations of 
human cadavers. It is essentially an Old 
AA^orld species, but it may be found at 
any time in Europeans who have immi- 
grated to the United States, and the 
possibility is by no means excluded that 
it may be found in American ti-oops who 
have served in China or the Philippines. 
AA^ard (1895) has recorded this species 
for cats in Nebraska. l)ut a comparison 
of his s p e c i m e n s with 
authentic material of 0. 
felineus from Europe has 
convinced both him and me 
that the Nebraskan parasite 
represents a distinct form. 
Since it is so closelv allied 
to C. further since Uncus. xsso. 
both species occur in cats 
and the European form oc- 'O'’-) 
cnrs in man also, it need occasion no sur- 
prise if AATird's parasite is found sooner 
or later in man. Its characters may be 
seen from the following diagnosis: 
Opisihorchis psevdofelinevs ^ Ward, 1901 (fig. 
45); Opisthorchis: 12 to 20 mm. long, 1 to 2.5 
mm. broad; form somewhat similar to that of 
0. felineus, but more elongate. Oral sucker 0.355 
mm. by 0.414 mm., terminal to subterminal; 
ventral acetabulum somewhat smaller, 0.247 mm. 
by 0.240 mm., situated slightly anterior of border 
between first and second anterior fourths of body. 
Skin provided with minute scale-like spines 
which are lacking, however, on posterior portion 
of body. Pharynx 0.212 mm. by 0.219 mm.; 
140. 4o.—0i)is(horchis fdmeus from a cat. esopha«:us 0.175 inm. long; intestinal ceca extend 
collected in Prns.>.ia by Max Braun. posterior extremitv. Jfale organs: Testicles 
Greatly enlarged to show the anatomy: ^ " t- 
or., ovary; r. receptacnlum seminis; round or lobate. Leniale organs: Items veil 
s. g.. shell gland: other letters same as developed, the coils often being quite crowded; 
fig.42. (After StilesWHassall,iS94.fig.6.) ovary globular; receptaculum seminis large, 
postero-lateral of ovary; vitellaria divided each side into ati antovarial itortion 
i 
«Syxoxyms. — Distoma felineurn” of Ward, 1895; Opisthorchis pseudofelineus Ward, 
1901. 
Bibliography'. — For more detailed description see 5Vard, 1895, pp. 152-158. 
