A new species of polychaete annelid,
Nereis (Neanthes) micromma, is described and illustrated. The species, which is most abundant on muddy sand bottoms, has been collected offshore from the Texas and Louisiana coasts in the northern Gulf of Mexico; it has also been collected in Gulf influenced bay areas in Texas. Although present the entire year in Texas waters, population data indicate maximum reproductive activity occurs in the fall. Most specimens have been collected from waters of 25 to 36 parts per thousand salinity.
The inappropriateness of "biarticulate" in describing the palps of some nereidids is discussed.