English: Drawing of the anatomy of Rathouisia leonina
BM - buccal mass
SD - salivary duct
SG - salivary gland
OE - oesophagus
P - position of the pneumostome
AN - anus
H - heart
I - intestine
ST - stomach
OT - ovotestis
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{{Information |Description={{en|Drawing of the anatomy of ''Rathouisia leonina''<br/> BM - bubbal mass<br/> SD - salivary duct<br/> SG - salivary gland<br/> OE - oesophagus<br/> P - position of the penumostome<br/> AN - anus<br/> H - heart<br/> I - int...