16 
«Vv 
lateral of the ventral acetabulum, on the side (right or left) of the median line opjjo- 
site to the main portion of the uterus; receptaculmn seminis absent; Laurer’s canal 
present ; vitellaria enor- 
mously developed, ex- 
tending from anterior to 
j)osterior end of the body 
and located (as seen in 
cross section) on the pe- 
riphery, usually leaving 
a longitudinal free space 
both in tlie dorsal and 
ventral median field. 
The transverse vitello- 
ducts pass cephalad of 
the testicles, hut caudad 
of ovary and uterus. 
Uterus may he only 
slightly developed, or 
may form a compara- 
tively large-sized rosette 
more than half as broad 
as the body; it may be 
located entirely on one 
side (right or left) of 
Fig. 11. — Sputum of man containing eggs of the lung flukes, greatly median line, or may ex- 
enlarged. (After Manson, 1900, p. 5G8, fig. 84.) both sides of median 
line, partially covering the ovary. Eggs rather large, about 80 to 118 ji long by 
48 to 60 j.i broad. Embryo develops after oviposition. 
Habitat. — Encysted, usually two in each capsule, in lungs of mammals. 
Type species. — Paragonimus u'estermanii (Kerbert, 1878). 
The Asiatic Lung Fluke— PARAGONIMUS Vv ESTERMANII « (Kerbert, 1878) 
Stiles & Hassall, 1900 — of Man. 
[Figs. 5 to 16.] 
Specific diagnosis. — Paragonimus: 8 to 16 mm. (after Kelhcott 15 to 20 mm. ) long, 
4 to 8 mm. broad, 2 to 5 mm. thick; plump, pinkish to reddish-brown (alive) or 
slate (preserved) in color; live specimens are depressed and with variable outline; 
jireserved specimens often oval to elongate pyriform, transverse section round or 
nearly so, anterior end bluntly rounded, posterior end less blunt. Oral sucker 0.53 
to nearly 0.75 mm. (Leuckart) or more (0.864 by 1.017 mm. or 1 to 1.4 mm. )& 
(AVard); or 0.80 to 1.12 by 0.80 to 0.83 mm. (Stiles ck Hassall); 0.78 (Kerbert) in 
^Synonyms. — Distoma u'estermanii Kerbert, 1878; D i stoma ring eri Coh\)o\(\, 1880; 
Gregarina indmonmn Baelz, 1880; Gregarina fasca Baelz, 1880; Distomum westermani 
Kerbert, 1881; Distoma pulmonis Kiyona, Suga, and Yamagate (1881); Distomum 
pulmonis Kiyona, Suga, and Yamagate (1881); Disloma pulmonale P>ae\z, 1883; Distoma 
pulmonar La Clinica de Malaga, 1883; Distoma p>ulmonum (Baelz) Tomono Hidekata, 
1883; ^ ^ Distoma heimticum lArmP of Miura, 1889; Distomum ringeri (Cobbold,. 1880) 
von Linstow, 1889; Distomum u'estermanni Leuckart, 1889; Distomum 2 ^ulmonale 
(Baelz) Leuckart, 1889; Distomum cerebrate Yamagiwa, 1890; Distoma ringers Rev. 
^c\., ' ^lesogonimus U'estermanni (Kerbert, 1878)” Railliet, 1890; Mesogonimus 
pulmonalis (Baelz, 1883) Railliet, 1890; Mesogonimus ringeri (Cobbold, 1880) Railliet, 
1890; Distoma u'estermani (Kerbert, 1881) "Weber, 1891; Distoma u'estermanni 
(Leuckart) Blanchard, 1891; Mesogonimus indmonale (Baelz, 1878)” Stossich, 1892; 
“Distoma {Mesogonimus) u'estermanni Kerbert, 1878,” of Stiles, 1894; Distomum sj). 
of Kellicott, 1894; Distomi ringeri (Cobbold, 1880) Simon, 1897; Paragonimus u'ester- 
manii (Kerbert, 1878) Stiles & Hassall, 1900. 
^Suckers distorted, measurements not exact. — Ward. 
