1) Lineus 2) Nemertina 1) Nemertina 2) Phylum 3) Phylum nemertea 4) Phylum nemertina 
The foregut, stomach and intestine run a little below the midline of the body, the anus is at the tip of the tail, and the mouth is under the front. A little above the gut is the rhynchocoel, a cavity which mostly runs above the midline and ends a little short of the rear of the body. All species have a proboscis which lies in the rhynchocoel when...
The nemertea are the proboscis worms. They are triploblastic animals with a very extensible body. Both a mouth and anus are present. A simple blood vascular system is present. The excretory system is a flame-bulb system.
[n] - proboscis worms
phylum Nemertea noun proboscis worms