380 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Ep. P. — Epiotic process of epiotic. 



e. s. c. — External (horizontal) semicircular canal. 

 Eth. — Ethmoid cartilage. 



Ex. O. — Exoccipital. 



ext. cr. — Crista acustica ampullae externse. 



/. car. — Carotid foramen, transmitting the internal carotid artery. 

 /. gl. — Foramen of the N. glossopharyngeus. 



f. jug. — Jugular foramen, transmitting the superior (internal) jugular vein, 



the ophthalmic artery and the T. hyomandibularis facialis. 



F. M. — Foramen magnum (occipital foramen) . 



/. olf. — Olfactory foramen in the pre-frontal by which the N. olfactorius 

 reaches the nasal chamber. 



F.R. — Fin rays. 



F.R. ah — The two pieces forming a single fin ray. 



F.R. C — Ligament connecting the two halves of the fin ray. 



F.R. d — Ligament connecting one half of the fin ray with the baseost. 



F.R. € — The right abductor muscle of the fin ray. The elevator and 

 depressor muscles do not appear in this section. 



F. Sp. N. — Foramina for the spinal nerves. 



F. S}). N. 3 — Foramina for the fourth spinal nerve. 



/. tr. fa. — Trigemino-facial foramen, transmitting the vth and viith nerves 

 except the T. hyomandibularis facialis. 



/. vg. — Foramen of the N. vagus. 



g. 3 — 6. — Ganglia of the spinal nerves 3 to 6. 



g. v — vii. — Massed ganglia of the trigeminal and facial nerves. 



g. ix. — Ganglion of the N. glossopharyngeus. 



g. x. 1. — Ganglion of the first branchial trunk of the N. vagus. 



g. x. 2 — 5. — Ganglionic complex formed by the second, third and fourth 

 branchial -|- the intestinal ganglia of the N. vagus. 



g. coel. — Ganglion coeliacum. 



g. d. 2. — Dorsal ganglion of the second spinal nerve. 



g. extcr. — Extracranial ganglion of the first spinal nerve. 



g. inter. — Intracranial ganglion of the first spinal nerve. 



g. v. 2. — Ventral ganglion of the second spinal nerve. 



H. A. — Haemal arches, numbered from before backwards. 



H. Br. 1 — Hypo-branchial of the first branchial arch. 



H. C. — Haemal canal. 



H. Hy. — Hypo-hyals. 



Hm. — Hyomandibular. 



Hm. F. l ~ 2 — Cup and facet for head of hyomandibular. Cp. fig. 5. 



