62 



WALTER K. FISHER, 



J jaw 



j nerve connecting heart nerve with 

 visceral 



K.M vein-net over kidney 



K. S kidney vein, or collector from 

 vein-net (K.M) 



L lips 



I nerve to oesophagus from left 

 pleural ganglion 



Lat. P lateral pouches of oral cavity 



Lc, Lc' labial commissures 



Lig ligament connecting two oto- 

 cysts 



L. K left kidney 



L. G labial ganglion 



L. Osph. N left osphradial nerve 



L.Par, L.Par' posterior and an- 

 terior left parietal nerves 



L. U left ureter 



lu.n nerve to left ureter 



Lv liver 



Lv. D liver duct 



M muscular tissue 



m, m' nerves to oesophagus from 

 left pleural ganglion 



Ma mantle 



M. C mucous cells 



Med. S median blood sinus of foot 



M. N, M. N\ M. N" mantle nerves 



Mth mouth 



M. V mantle veins 



n visceral nerve from left pleural 

 ganglion 



Neu.A neural artery 



Nph. N, Nph. N' nephridial nerves 



Oc oral cavity 



Oe oesophagus 



op optic nerve 



Osph. G osphradial ganglion 



ot otocyst 



of otocyst nerve 



Ov ovary 



p nerves from cerebro-pedal con- 

 nective 



Pc, Pc', Pc" pedal commissures 



Pd.N, Pd.N', Pd.N" nerves to 

 pericardium 



Ped.A pedal artery 



Ped. G pedal ganglion 



Fed. G' pedal cords 



Ped. N, Ped. N' pedal nerves 



Per pericardium 



Per' pericardial wall 



Pli pharynx 



Ph.G posterior or pharyngeal glands 



PI. G pleural ganglia 



P.P.N, P.P.N' right and left 

 posterior pallial nerves 



P. P. N" nerve joining the above 



Ppn, Ppn' palp nerves 



Pro proventriculus 



P.S pedal sinuses 



P radula 



Ben. P. C, Ben. P. Q right and left 

 reno-pericardial canals 



Bg. N, Bg.N ring nerves in mantle 



B.E right kidney 



B. Osph. N right osphradial nerve 



B. Par, B. Par' posterior and an- 

 terior right parietal nerves 



Bt radula tube 



Bt' point where radula tube quits 

 aorta 



Bt" distal knob of radula tube 



B. TJ right ureter 



ru. n, ru. n' nerves to right ureter 



S stomach 



Sac lateral sacculation of pharynx 



Sg sensory groove of lips 



Sh. M shell muscle 



Sh.M.N nerves to shell muscle 



spn, spn', spn" superior pharyngeal 

 nerves 



Stg. C stomatogastric commissure 



Stg. G stomatogastric ganglion 



Stg.N, Stg.N right and left .'sto- 

 matogastric nerves 



Sub. I subintestinal ganglion 



Sub. L sublingual or subradular 

 organ 



Sub. L. A sublingual artery 



Sub.L.F sublingual furrow 



Sub. B. G subradular commissure 



Sub. B. G subradular ganglion 



Sab. B.N subradular nerves 



