wT ALLIS. [ Vor, Ee 
The seven supra-branchial nerves, as given by Beard, are the 
following :— 
1. Ophthalmicus profundus, 
belonging to the ciliary ganglion and hypophysis cleft. 
2. Ophthalmicus superficialis less portio facialis, 
of the gasserion ganglion and mouth cleft. 
3. Portio facialis of Ophthalmicus superficialis. 
4. Ramus buccalis, 
of the facial ganglion and two clefts, the hyoid and an absent 
one. 
5. Supratemporal branch of the glossopharyngeal, 
of the glossopharyngeal ganglion and the first branchial cleft. 
6. Supratemporal branch, 
of the first vagus ganglion and second branchial cleft. 
7. Lateral nerve, 
of the second, third, and fourth vagus ganglia, and the third and 
following visceral clefts. 
Of these seven nerves, the ophthalmicus profundus and 
ophthalmicus superficialis less portio facialis innervate, according 
to him, sense-organs lying over the snout; the portio facialis 
and ramus buccalis, the organs of the supra- and infra-orbital 
lines respectively ; the glossopharyngeal and first vagus branches, 
the supratemporal organs; and the rest of the vagus, or nervus 
lineze lateralis, the organs of the lateral line of the body. 
The arrangement of the organs of the lateral system in 
Amia calva and their method of innervation, as determined by 
the examination of larval stages by sections, does not agree with 
Beard’s scheme, for the trigeminal and ophthalmicus profundus 
take no part with any of their branches in the innervation either 
of the canal or pit organs. Moreover, there is the large and 
important operculo-mandibular line of organs, which Beard seems 
to have overlooked, for he does not mention it, and none of the 
suprabranchial branches given in his scheme of the sensory 
nerves could take any part in its innervation, unless the con- 
ditions in Torpedo and the other forms used by him for com- 
parison are markedly different from those found in Amia. 
In Amia the trigeminal, although it takes no part in the 
innervation of the regular canal or pit organs, has a large and 
