CONTENTS. Ill 



Section 6. — The Auditory Nerve 126 



Section 7. — The Trigemino-facial Complex 128 



I. — The Roots and Ganglia of the Facialis .......... 130 



I. — The Motor Root 130 



2. — The Communis Root 131 



3. — The Lateralis Roots 132 



II. — The Roots and Ganglia of the Trigeminus 133 



I. — The Motor Root 133 



2. — The General Cutaneous Root 134 



III. — Comparative Review of the Trigemino-facial Roots, 134 



IV. — The Truncus Hyomandibularis 135 



I. — The Ramus Opercularis Profundus VII 137 



2. — The Ramus Opercularis Superficialis VII , . . . . 138 



3. — The Ramus Hyoideus VII 142 



4. — The Ramus Mandibularis VII 144 



5. — Comparative Review of the Hyomandibularis 1 54 



/. — The Opercular Rami 154 



zV. — The Ramus Hyoideus 154 



in. — TJie Ramus Mandibularis. , 156 



iv. — The Geniohyoideus and Intermandibularis 



Muscles 157 



V, — The Chorda Tympani 160 



V. — The Ramus Pre-trematicus Facialis 173 



VI. — The Ramus Palatinus Facialis 176 



VII. — The Truncus Infra-orbitalis 176 



I. — The R. Opercularis V 179 



2. — The Second and Third Branches 180 



3. — The Ventral Division 181 



4. — The Middle Division — R. MandibiUaris V 182 



5. — The M. Adductor Mandibulae 187 



6. — The Dorsal Division 187 



VIII. — The Ramus Oticus 192 



IX. — The Truncus Supra-orbitalis 195 



X. — The Ramus Lateralis Accessorius 202 



XI. — The Ramus Ophthalmicus Profundus 206 



XII. — Comparison with Acipenser and Lota 2x0 



XIII. — Summary of the Trigemino-facial Complex 213 



