*54 
EXPLANATION OF FIGURES 
Reference Letters. 
App .—Lateral pouches of the 
oral sucker. 
C.ex .—Lateral excretory vessels. 
C. P. — Cirrus pouch. 
D. ej .—Ejaculatory duct. 
Disc . — Edge of the ventral disc. 
Dr- Retracted grooves (“pseudo¬ 
suckers ”). 
Dr. —The same organs, everted. 
hit.-- Intestine. 
L.C. —Laurer’s canal. 
/. 7 est . — Left testicle. 
Met . — Metraterm. 
Nerv .—Nervous system. 
Oes- -Oesophagus. 
0 v.~ Ovary. 
P.ex. — Excretory pore. 
P.Gett. — Genital aperture. 
Phar. — Pharynx. 
P.P. - Pars prostatica. 
R.sent.— Seminal receptacle 
r.T est. Right testicle. 
Sh.Gl. —Shell gland. 
Ut. — Uterus. 
lag. — Vagina. 
V .ex. — Excretory vesicle. 
V.ex./at . — Lateral branches of 
the excretory vesicle. 
Vit. Yolk glands. 
Vit.D. — Unpaired vitelloduct. 
V .sew. Seminal vesicle. 
Fig. i. 
Fig. 2 . 
Fig. 3- 
Fig- 4- 
Fig- 5 - 
Fig. 6.- 
Fig. 
Fig. 8. - 
Rurytrema patterealicum. Specimen from Japan seen from 
the ventral aspect. Enlargement about it. 
Ilurytrema coeloniaticum. Specimen from Hong Kong seen 
iom the ventral aspect. Enlargement about II. 
Gastrodtscus secundus seen from the ventral side. Enlarge- 
men about n. 1 he opening in the anterior part of the 
ven i a surface leads into the genital atrium from the 
ottom of which the papilla bearing on its top the male 
and female genital openings arises. 
Ga aZlti SCUS . ■ secun< f us ■ Median sagittal section; the 
boiiriiicr CUt f” U iaVe been coni pleted from the neigh 
intern if SCC 10nS so as to give a general picture of the 
■nternal organisation. Enlargement about 16. 
Ventral, Specimen from the Port Said case. 
Ventral aspect. Enlargement about 9 . 
vTT endemuus - Specimen from Okayama, Japan, 
the” preceding fi Enlar S eme nt exactly the same as that of 
comparison ^Thf^ S ° t0 alIow of an a PP r0 P nate 
visible in ti>,v . un equal length of the intestinal caeca 
other individuals^ 01 ” 160 1S accidental and not P resent ,n 
eggs, each* errer^t' L- c ^ ,e ^ forms presented by the 
worm EnlinS *' vCn ^ rom a separate specimen of the 
Clo \ ■ gement ca - 990 . 
and under^exaedv^th EggS fi ^ ured in the same manner 
ceding drawino- J . f sa JF e enlargement as in the pre- 
& as to allow of comparison. 
