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been done in the case of Amia by the important researches of ALLIS 
(16), and indeed Mr. CorrLınge’s otic branch of the Vth bears a 
suggestive resemblance to those of the VIIth described by Ramsay 
Wricut (9) and Auuis. With the former’s paper Mr. CoLLINGE ap- 
parently does not seem to be acquainted. 
The conclusion then arrived at with regard to the Vth and VII th 
nerves of Chimaera is precisely what one would have expected. Both 
nerves bear a striking resemblance to those of Laemargus, but are 
in a more primitive condition in so far as the VII th does not be- 
come secondarily related to the Vth etc. The trigeminus, with a 
slight but important exception, does not take any part in innervating 
the sense organs of the lateral line, which latter for the most part 
is effected by the dorsal branches of the facial. 
With regard to the glossopharyngeal nerve Mr. CoLLINGE describes 
a branch of it as “skirting the border of the pectoral fin”. If we are 
to understand this to be a statement that the IXth partly or wholly 
supplies the pectoral fin, and I do not see what else it can mean, 
it is of course needless for me to remark that I have never seen this 
branch. 
Mr. CorLinge’s description of the vagus is also of an extra- 
ordinary character. He refers to “a vagus ganglion” and to the 
lateralis as “passing from the vagus ganglion”. He also describes 
what he considers to be a doubtful anastomosis between the facial and 
the vagus. From his figure and from the fact of his stating that the 
lateralis arose from the vagus ganglion, it is quite possible that this 
anastomosis is the root of the lateralis, which, as in all cartilaginous 
fishes, is invariably not only the most anterior root of the vagus, but 
arises in front of the glossopharyngeal. In this connection it is in- 
teresting to note that the anastomosis is described as arising “about 
5 mm posterior to the roots of the facial” (i. e. the hyomandibular 
root — Hin fig.). The following from my preliminary paper is a 
correct account of the roots and ganglia of the vagus:— 
“The vagus in Chimaera is in a specially interesting condition, 
and is more primitive than in any other vertebrate. Without any 
dissection beyond mere exposure, four ganglia are to be easily distin- 
guished, and were it not that the ganglion of the third branchial lies 
under, and is obscured by, that of the second, the vagus of Chimaera 
would be in the unique condition of consisting of five perfectly distinct 
nerves. As far as I am aware, this condition is most nearly ap- 
proached in Torpedo, the IXth and Xth cranial nerves of which 
I dissected some time ago at Prof. Ewarr’s suggestion. In Chimaera 
Mae 
