NO. 3575 BATHYAL POLYNOIDS — PETTIBONE 13 



large eyes or ocular areas ; ceratophores of lateral antennae formed by 

 anterolateral continuations of prostomia (i.e., lepidonotoid) ; bulbous 

 facial tubercle present and continuous with ridges on upper lips ; long 

 ventral cirri (buccal cirri) on segment II; parapodia very long, sub- 

 biramous, notopodia scarcely separated basally from the neuropodia, 

 both rami with digitiform acicular processes; neurosetae all of one 

 kind, numerous, long, transparent, flattened distally, distal tips very 

 thin, entire (unless broken). The 3 genera may be distinguished 

 according to the following key. 



Key to Admetella, Bathyadmetella, and Bathymoorea 



1. Segments 33. Elytra (or elj'trophores) 14 pairs, on segments 2, 4, 5, 7, then 



on alternate segments to 23, 26, 28, and absent from last 5 segments. Pro- 

 stomium without antennal scales or sheaths. Ceratophore of median anten- 

 na in middle of prostomium. Without tentacular sheaths. Without 

 nuchal fold. Buccal segment (II) with setigerous parapodia. Lower lip 

 region bare, without papillae. Notopodia with long acicular processes and 

 small bundles of delicate notosetae. Nephridial papillae extremely long, 

 may extend beyond neuropodial lobes .... Bathymoorea, new genus 



B. renotuhulata (Moore) 

 Segments more than 50. Elytra (or elytrophores) more than 20 pairs, on 

 segments 2, 4, 5, 7, then on alternate segments to 23, and then on every 

 third segment continuing to ead of body. Prostomium with antennal 

 scales or sheaths. Buccal segment (II) with parapodia rudimentary, 

 achaetous, with or without acicula. Nephridial papillae not especially 

 elongated, shorter than ventral cirri 2 



2. Antennal scales short, triangular, attached between ceratophores of median and 



lateral antennae. Ceratophore of median antenna in middle of prosto- 

 mium. Without tentacular sheaths. With low transverse nuchal fold on 

 segment II between first pan- elytrophores. Lower lip region bare, without 

 papillae. Notopodia with long acicular processes and small bundles noto- 

 setae Admetella Mcintosh 



A. longipedata (Mcintosh) 

 Antennal sheaths long, digitiform, attached basally to and enclosing lateral 



antennae. Ceratophores of median antemaa on anterior part of prosto- 

 mium. With paired long digitiform tentacular sheaths between palps and 

 tentacular cirri. Without nuchal fold. Lower lip region with series of 

 lamellar papillae. Notopodia with short acicular processes, achaetous. 



Bathyadmetella, new genus 



B. commando, new species 



