Part 3 — TABLE OF REFERENCE LETTERS.
Reading edition
afr = adradial furrow.
afr´ = furrow in Tripedalia that separates perradial from interrad. regions in lower half of bell. (In Charybdea the same furrow is directly continuous with afr.)
ax = axis of nerve.
c = concretion.
cc = canal underneath ivl, connecting the two adjacent marginal pockets.
ccl = circular canal.
ci = cilia.
cm = circular muscle.
co = cornea.
cp = capsule of lens.
cs = covering scale of niche.
csc = canal of sensory club.
ct = canal of tentacle.
ct´ = beginning of canals of lateral tentacles in Tripedalia.
ec = ectoderm.
ece = ectoderm of exumbrella.
ecs = ectoderm of subumbrella.
ed = distal paired eye.
el = larger unpaired eye.
en = endoderm.
enc = endoderm of sensory club.
enf = tract of nerve fibres underlying endoderm.
enfl = endoderm of floor of stomach.
enp = endoderm of stomach pockets.
enr = endoderm of roof of stomach.
ens = endoderm of stomach.
ep = proximal paired eye.
es = smaller unpaired eye.
fc = funnel leading into canal of sensory clubs.
fp = fibre from subepithelial plexus of subumbrella.
fph = filaments of phacellus.
frn = frenulum.
ft = funnel-shaped depression in ectoderm axial to base of tentacle.
g = gelatine.
gc = ganglion cell.
ge = gelatine of exumbrella.
go = gastric ostium.
gs = gelatine of subumbrella.
hvl = horizontal vascular lamella.
i = interradius.
if = interradial funnel of bell cavity.
ifr = interradial furrow.
ivl = interradial vascular lamella.
l = lens.
lv = lip of valve.
m = bell margin.
mc = mucous cell.
mep = mesogonial pocket.
mo = mouth.
mp = marginal pocket.
mp´ = smaller marginal pockets, in Tripedalia.
mst = muscle of stock of sensory club.
mt = muscle at base of tentacle.
n = nerve.
nc = network cells, in sensory club.
nf = nerve fibres.
nm = nematocyst.
nst = nerve of stalk of sensory club.
osn = outline of sensory niche.
p = perradius.
pe = pedalium.
ph = phacellus.
pr = proboscis.
r = reproductive organ.
rc = remains of concretion.
rcl = radial canal.
rg = radial ganglion.
rm = radial muscle.
rn = radial nerve.
rns = root of nerve of sensory club.
rs? = remains of stalk (?) of sensory organ.
rt = retina.
s = stomach.
sc = bell cavity.
scl = sensory club.
scn = supporting cell of nerve.
se = sensory epithelium.
sh = shrinkage space.
sl = stalk of lens.
sla = supporting lamella.
sn = sensory niche.
so = sensory organ in proboscis of Tripedalia.
sp = stomach pocket.
sph = stalk of phacellus.
ss = stalk of sensory organ, in proboscis.
st = stalk of sensory club.
su = suspensorium.
sub = subumbrella.
tl = lateral tentacle.
tm = median tentacle.
v = velarium.
va = vacuole.
vb = vitreous body.
vc = velar canals.
ve = edge of velarium.
vfs = visual fibres, according to Schewiakoff.
vg = valve of gastric ostium.
vl = vascular lamella.
vlc = vascular lamella connecting vls with vlm.
vlm = vascular lamella of margin.
vls = vascular lamella of sensory niche.
vlst = vascular lamella of sensory niche at base of stalk.
wc = wandering cells.
w-x-y-z = successive levels of Figs. 40-43 on Fig. 5.