Bipalium kewense (Hammerhead flatworm)

From the Aust Museum: The Shovel-headed Garden Worm, like other flatworms, does not have a respiratory or circulatory system, a skeleton, or an anus. The mouth, which also serves as the anus, is found near the middle of the body on the lower, or ventral, side. It has a protrusible muscular pharynx that is used as a feeding organ; this is attached to a three-branched intestine. It has a cluster of nerves at the head end that serves as a brain, and this is connected to a ladder-like nervous system, circular and longitudinal muscles for movement, and a primitive excretory system.