nemelt

An obsolete form of nimble. Nemertea (ne-mer'tē-ä), n. pl. [NL., chocælous turbellarians; but they are more nearly related to annelids. They have well-developed muscular, blood vascular, and nervous systems. Most of the species are diœcio us, and some are viviparous. There are commonly ciliated pits on the head. The object known as a pilidium is the free-swimming larva of a nemertean. These worins vary greatly in general outward aspect, in size, and in habits. Some are minute, others very long. (See Linei dæ. ) They live for the most part in the sea, but some live in the mud or on land, and some are parasitic. The Ne mertea are often divided into two orders, called Anopla and Enopla according as the proboscis is armed with stylets or unarmed. Of the latter order is the family Nemertidæ (or Amphiporide ); the Lineidæ and Cephalothricidæ are an opleaned, Another division is into Hoplonemertea, Schizos under pilidium and proctucha. Also written Nemertoidea. nemertean (ne-mer'te-an), a. and n. [ II. n. A worm of the cla Nemertea .