571 
DR. A. GUNTHER’S DESCRIPTION OF CERATODUS. 
k, k'. Venae renales aclvehentes. 
I, l'. Posterior venae intercostales, 
m, m. Anterior venae intercostales. 
n. Arteria renalis. 
o. Right, and o'. left vas deferens. 
p. Orifice of the vasa deferentia. 
q. Uretral orifice. 
PLATE XLII. 
Female Sexual Organs. 
Fig. 1. In a fully developed condition. The liver has been removed ; only a part of its 
lateral lobe (l) remains. The right ovary (a) is shown from the inner surface 
covered by the peritoneum; the left (a 1 ) is turned inwards, so as to .show its 
outer surface and the oviduct. § nat. size. 
Fig. 2. In an undeveloped condition. The liver (l) has been preserved. Of both ovaries 
the inner side is shown, f- natural size. 
a. Right, and a!, left ovary. 
b. Adipose anterior termination of ovary of the right side. 
U . The same of the left side ; its end is split open in fig. 2 to show the 
blind end of the oviduct (V). 
c, c'. Posterior termination of ovary. 
d , d'. Groove at the base of the ovary. 
e, e'. Reverted fold of the peritoneum. 
k , k'. Ureter. 
1. Liver. 
o. Right, and o', left oviduct. 
p. The lower part of the right oviduct is opened, to show the oblique 
transverse folds. 
q. Opening of the left oviduct into the right. 
r, r'. Abdominal orifices of the oviduct. 
Fig. 3. Transverse section through the oviduct, of the natural size. 
Fig. 4. A portion of the same, containing three mucous lamellae (magnified). 
a. Fibrous outer membrane of the oviduct, sending off 
b. Processes into the lamellae. 
c. Epithelial stratum. 
Fig. 5. Transverse section through the mucous lamellae, made in the longitudinal axis 
of the oviduct (magnified). 
b. Central fibrous tract. 
c. Epithelial stratum. 
Fig. 6. Transverse section through the mucous membrane of the oviduct of Menopoma , 
made in the longitudinal axis of the duct (magnified). 
A1DCCCLXXI. 4 K 
