240 JouRNAL OF COMPARATIVE NEUROLOGY. 
and the deeper branch the r. mandibularis internus, ignoring 
the fact that the latter nerve is of communis nature. 
10. The nerve which in Menidia and Gadus I termed the 
pre-trematic branch of the facialis is present in Ameiurus. It 
supplies taste buds in the lining of the suspensorium and of the 
proximal part of the hyoid arch. The middle and ventral parts 
of the hyoid arch are supplied from a large recurrent branch of 
the glossopharyngeus. The taste buds in the lining of the 
mandible are not supplied from any branch of the facialis, but 
from a branch of the r. mandibularis V. There is, therefore, 
nothing in this fish, which could be called a chorda tympani, as 
I have defined this term in the ichthyopsida, unless it be this 
nerve. It is more probable, however, that it is one of the 
branchial nerves, though it has nothing to do with the pseudo- 
branch in Ameiurus. Whether it should be termed the pre- 
trematic or the post-trematic nerve will depend upon whether 
the teleostean pseudobranch is a mandibular or a hyoidean 
demibranch. As this question is still in dispute, I have re- 
turned in this paper to the older designation, posterior palatine 
in order not to prejudice its morphological significance. 
11. The mandibular and maxillary branches of the tri-— 
geminus both receive general cutaneous and communis fibers 
in approximately equal proportions. The communis component 
corresponds to the ‘‘infero-medial strand” and the general cu- 
taneous component to the ‘“‘supero-lateral strand” of WRiGHT. 
All of the barblets apparently receive both general cutaneous 
and communis nerves, but chiefly the latter. They are very 
abundantly supplied with terminal buds and doubtless have 
a function (at present unknown) associated with these organs in 
addition to their general tactile function. 
12. The ophthalmic nerves of Ameiurus have been 
cleared up my pupil, Mr. Worxmay, on the basis of the same 
material as here reported upon. We find that the superficial 
ophthalmic of authors is the facialis branch of this name and 
supplies the supra-orbital lateral line canal organs and the associ- 
ated pit organs only. The nerve which previous writers on the 
siluroids have termed the ophthalmicus profundus is in reality 
