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DE. A. (xUNTHEE’S DESCRIPTION OE CERATODUS. 
h. Cellular tissue. 
k. Kidney. 
k'. The two ureters. 
l. Lung. 
v. Vent. 
w. External peritoneal opening. 
w'. Probe passed through the peritoneal canal. 
Fig. 2. Vertical section through the end of the intestine. 
a. Cavity of the rectum. 
(j . V asa deferentia ; g", their common orifice. 
k'. Ureters; their common orifice. 
r. Fold of the dorsal wall of the rectum, separating it from 
u. the Urinary bladder. 
v. Vent. 
w. External peritoneal opening. 
Figs. 3 & 4. Upper and lower halves of the right testicle, with portions of the circulatory 
and seminiferous systems injected (natural size). 
a. Vas longitudinale ; its course is indicated by a dotted line ; it is opened 
at a!, to show the pore-like openings of the canaliculi seminiferi. 
b. Line of attachment of peritoneum. 
c, c. Small veins injected from the vena cava. 
d, d. Canaliculi seminiferi injected from the vas longitudinale. 
x. Vena cava. 
PLATE XLI. 
Uropoetic organs, with their veins. Figures of the natural size. 
Fig. 1. Front view after removal of the intestine. 
Fig. 2. The left testicle is turned over to the right, to show the entrance of the vena 
caudalis (li) into the vena cava. 
Fig. 3. Fight kidney, with portal system : the tissue in which the organ was imbedded 
is removed, and the right testicle drawn to the left. 
a. Lower part of lung. 
b. Lower part of right testicle, with its terminal lobe ( b "). 
V . Lower part of left testicle. 
c. Right kidney ; c', left kidney. 
d, d 1 . Ureters. 
e. Vena cava. 
f. Vena testicularis sinistra. 
g. Vena testicularis dextra. 
li. Vena caudalis. 
i, i. Vente renales revehentes. 
