330 MR. R. OWEN ON THE ANATOMY OF LINGUATULA TANIOIDES. 
PLATE XLI. 
Figg. 10 to 16. LinevatruLa TxniorpEs. 
Fig. 10. Linguatula Tenioides, of the natural size, as seen from the ventral aspect. 
a. The serrated muscular lateral parts of the body. 
b. The thin semitransparent mesial integument. 
ce. The circular mouth. 
d, d. The oblong pits containing the hooks. 
11. The anterior part of the worm, magnified three diameters, showing the round 
central mouth, and the lateral pits and hooks. 
12. The anterior and posterior parts of the body of the Linguatula magnified 
four diameters, with the dorsal parietes of the abdominal cavity removed, 
to show the alimentary canal, impregnating glands, convoluted oviduct, 
and nerves in situ. 
13. The nervous and generative systems removed from the body; the uterine 
tube cut short. 
14. A part of the generative system, showing the junction of the oviducts and 
vesicule seminales. 
The same letters indicate the same parts. 
a. The external or epidermic layer of the integument. 
b. The muscular layer. 
ce. The esophagus. 
d. The dilated part of the alimentary canal or stomach. 
e. The intestine, surrounded by the coils of the oviduct. 
f. The anus. 
g. The single subcesophageal ganglion. 
h, h. The anterior pair of nerves passing on either side of the wsophagus. 
i, 7. The second and third pairs of lateral nerves, going to the fosse and 
hooks. 
k, k. The fourth lateral pair of nerves, supplying the genital organs, 
1, l. The fifth or posterior pair of nerves, supplying the body. 
m, m. The male organs or glands secreting the impregnating fluid. 
n,n. The ovary. 
o, o. The oviduct. 
p. The uterus, or tube formed by the union of the oviducts and testes. 
15. An ovum of Linguatula Tenioides, magnified 300 diameters, showing its 
breadth and the recedence of the vitelline from the cortical membrane 
at a. 
16. An ovum, showing its thickness, or lesser transverse diameter, with part of 
the connecting substance adhering to it. 
