566 
orb. V. = Vein to orbital sinus. 
p. c. = Polygonal cell. 
pad. = Muscular stomach pad. 
pch. = Pouch-like dilatation. 
pen. = Penis. 
ps. ext. = Ext. pseudocorneal memb. 
ps. nt. = Int. pseudocorneal memb. 
ps. mem. = Pseudocorneal membrane. 
P. = Pancreas. 
P, = Terminal suckers of male. 
P. C. = Post. communication between 
mantle cavities. 
P. A. = Pancreatic artery. 
Pp. = Pupil of eye. 
P. M. = Post. membranous wall of 
brain capsule. 
Pall. N. = Pallial nerve. 
Pall. V. = Pallial vein. 
Ped. G. = Pedal ganglion. 
Ph. A. = Pharyngeal artery. 
Pig. = Retinal pigment. 
Post. Fun. N.= Post. Infundib. nerve. 
Post. Sup. oph. = Post. Sup. Ophthal- 
mic nerve. 
p-. = Prostate. 
a Ridge for jaw muscles. 
r. b. = Base of radular sac. 
r. m. gr. = Right mantle groove. 
rad. = Radula. 
A. = Rectum. 
R. K. = Right Kidney. 
R. N. = Retinal nerves. 
R. Pall. A.= Right Pallial artery. 
R. Pc. ap. = R. reno-pericardial aper- 
ture. 
R. S. = Radula sac. 
R. wall. = Inner wall of oesophagus. 
Rec. = Recurrent artery. 
Res. = Reservoir. 
Ret. = Retina. 
Ret. C. = Retinal cell. 
Ret. N. = Nucleus of ditto. 
S. A. = Salivary artery. 
s. d. = Sensory pad. 
S. J., 84 9; = Salivary glands. 
s.g.d. = Salivary ducts. 
sh. = Shell. 
s. 1. g. = Sub-lingual salivary gland. 
sk. = Edge of integument. 
Sensory ridge. 
Sr = 
PFRANSACTIONS. LIVERPOOL BIOLOGICAL 
SOCIETY. 
. 7. 0. = Sub-radular organ. 
ucker. 
Sucker artery. 
Ganglion supplying suckers. 
Nerves to sucker. 
Venous Sinus. 
V2, S3V3.=Divisions of ditto. 
se, = Vein running between 
successive suckers. 
Sept. A.= Septal artery. 
Sept. V. = Septal vein. 
Sph. = Sphincter of sucker. 
St. G. = Stellate ganglion. 
sel. = Sclerotic. 
Sp. Coe. = Spiral caecum. 
St. = Stomach. 
Stat. = Statolith. 
Str. = Conn. tiss. Stroma. 
Sup. V. = Superficial veins of head. 
t. = Tongue. 
ir. = Secretory trabeculae of Ink gland. 
TM° 
eh eee 
ray 
SS QP I - 
“ 
RAPNRRDRwR* 
ir. s. = ‘Triangular septum in heart. 
P. = Testes: 
Tu. = Secretory tubule. 
Ur. = Ureten: 
Ur. p. = Urinary papilla. 
Vv. = Ventricle-. 
v. = Trans. valves in spiral caecum. 
V. D. = Vas deferens. 
V,, Vy,;. = Secondary Branchial veins. 
V,. = Semilunar valves. 
V. app. = Venous appendages. 
Visc. A. = Visceral artery. 
visc. d. = Visceral dome. 
Vise. G. = Visceral ganglia. 
Vitr. = Vitreous body. 
V. H. = Visceral envelope. 
V. Eff. = Vas efferens. 
Vasc. N. = Vascular network. 
Visc. N. = Visceral nerve. 
V. £. A.= Artery to visceral envelope. 
= Vein from visceral envelope. 
“Vesicula seminalis. 
Hee of vitreous fluid. 
eb 
= - W 
W. B. = White bedy. 
W. V. C. = Water vascular canal. 
W. V. C. ap. = Opening of water canal — 
into pericardium. : 
