GANGLIA AND NERVES OF SQUALUS 57 
ABBREVIATIONS 
At., Atrium 
Au.Ves., Auditory vesicle 
B., Base of brain 
B.V., Blood vessel 
B.A., Bulbus arteriosus 
Dien., Diencephalon 
D.End., Ductus endolymphaticus 
Epiph., Epiphysis 
G.Au., Auditory ganglion 
G.Gass., Gasserian ganglion 
G.Gen., Geniculate ganglion 
G.J.X., Jugular ganglion of X 
Gl. 1-6, Gill slits 
G.L.VII.D., Dorsal lateral line gan- 
glion of VII 
G.L.VII.V., Ventral lateral line gan- 
glion of VIT 
G.L.IX, Lateral line ganglion of IX 
G.L.X,, First lateral line ganglion of X 
G.L.X»2, Second lateral line ganglion 
of X 
G.L.X3, Third lateral line ganglion of 
x 
G.P.IX Epibranchial ganglion of IX 
G.P.X,-X;, Epibranchial ganglia of X 
G.Pro., Profundus ganglion 
G.V.IX, Visceral ganglion of IX 
G.V.X,-X;, Visceral or branchial gan- 
glia of X 
G.V.X,to X;+ Pl., Visceral ganglia of 
X plus the placodal ganglia on X 
G.Sp. 1-3, The first three spinal ganglia 
Hyp., Hypophysis 
H.C., Head cavity 
L. 1-6, Lateral line primordia 
M., Muscle primordia 
Mo. 1-6, Motor rami of cerebral nerves 
No., Notochord 
N. ITJ-IV-VI, Nerves III, IV and VI 
N.Au., Auditory nerve 
N.Olf., Olfactory nerve 
N.Ter., Nervus terminalis 
Par., Paraphysis 
Ph., Pharynx 
Pro. 1, 2, 3, Twigs of the profundus 
nerve 
R.Aur., Ramus auricularis 
R.Com., Ramus communicans 
R.B.VIT, Ramus buccalis VIL 
R.Hyo.VII, Ramus hyomandibularis 
VII 
R:.L.X.1, First lateral line nerve of X 
R.L.X.2, Second lateral line nerve of X 
R.Md.V, Ramus mandibularis V 
R.Mz.V, Ramus maxillaris V 
R.O., Ramus oticus 
R.O.S.V, Ramus ophthalmicus super- 
ficialis V 
R.O.S.VIT, Ramus ophthalmicus su- 
perficialis VII 
R.Pal.VII, Ramus palatinus VII 
R.PhIX, Ramus pharyngeus [X 
R.Ph.X,-X;, Pharyngeal rami of X 
R.PotIX, Ramus posttrematicus [X 
R.Po.X,-X;, Posttrematic rami of X 
R.Pr.IX, Ramus pretrematicus [X 
R.Pr.X,-X;, Pretrematic rami of X 
R.St.IX, Ramus supratemporalis [IX 
R.St.X, Ramus supratemporalis X 
Rt.Aud., Root of auditory ganglion 
Rt.Gass., Root of Gasserian ganglion 
Rt.Gen., Root of geniculate ganglion 
Rt.L.VII.D., Root of dorsal lateral 
line ganglion of VII 
Rt.L.VIT.V., Root of ventral lateral 
line ganglion of VII 
Rt.L.IX+X, Lateralis root of IX and X 
Rt.Vis.[X, Visceralis root of [IX 
Rt.X-2-3-4-6, Visceral sensory and 
motor roots of the second, third, 
fourth and fifth branchial ganglia 
of X 
Rt.X-3-4-6, Visceral sensory and mo- 
tor roots of the third, fourth and 
fifth branchial ganglia of X 
Rt.4-5, Visceral sensory and motor 
roots of the fourth and fifth bran- 
chial ganglia of X 
