18 
long by 56 ji broad (Leuckart); 96 to 118 ji long by 48 to 53 /i broad (AVard); 68 to 
96 jii long by 48 to 60 m broad (Stiles & Hassall); yellow shell. Aliracidium ciliated, 
develops after eggs leave the host. 
Sporocyst, redia, cercaria, and inter- 
mediate host undetermined. 
Habitat. — Lungs and brain (occa- 
sionally in other parts of the body), 
royal tiger {Felis tigris), domesticated 
cat {Felis catus domestica) , domesticated 
dog ( Caj} is f am ilia ris) , swine {Susscro fa 
domestica) , and man {Homo saj^iens). 
Geogeaphic distributiox. — China, 
Japan, Formosa, occasional imported 
cases in Europe, some cases of en- 
demic infection in the United States. 
Fig. 14. — Ventral vieAv of a lung fluke from man show- 
ing anatomy: ac, acetabnlum; ex. c, excretory ca- 
nal; f. intestinal ceca; or, ovary; f, testicles. (After 
Leuckart, 1889, p. 405, fig. 182.) 
From the medical point of view this 
is one of the most important flukes, 
hut from the agricultural standpoint 
it is less important than 
Fasciola JtejXJ.tica (see 
p. 22). Thus far the 
Asiatic lung fluke has 
been reported for this 
country for the cat (at 
Ann Arbor, Mich.), the 
dog (at Columbus, Ohio), and the domesticated hog (at the 
abattoirs in Cincinnati, Ohio). One (imported) case in man 
has recently been found in Portland, Oreg. It should be 
held in mind in connection with American troops who 
return from service in the Philippines. 
Fig. 15. — Dorsal view of a lung fluke from man 
showing ovary, shell gland, vitellaria, and 
Laurer's canal. (After Leuckart, 1889, p. 
186, fig. 428.) 
Fig. 16.— Egg of 
the lung fluke 
from man con- 
taining a cili- 
ated embryo, 
and showing 
the cap or oper- 
culum at one 
end. (After 
Xakahama, 
Genus FASCIOLA Linnaeus, 1758. 
' For diagnosis, see p. 21. 
Although pulmonary distomatosis is usually caused by flukes of the 
genus Paragonimv.s, it occasionally happens that the liver flukes (genus 
Fasciola) are found in the lungs of various animals. One case of such 
infection in man has been reported. The species in question was — 
