The excretory organ in glomerulus or proboscis gland lying in front of the central sinus and projecting into the proboscis coelom. It is made up of several blind tubular projections formed,by the peritoneum covering the buccal diverticulum,central sinus and heart vesicle. The tubular projection contain blood confluent with that of central sinus. The excretory peritoneal cells of glomerulus contain yellow or brown granules, probably of excretory substances. From glomerulus the excretory substances pass on into proboscis coelom and finally to the exterior through the proboscis pore.
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