Body slender and fragile, almost transparent, dorsally convex, ventrally flattened. Prostomium rounded anteriorly, straight posteriorly. Two pairs of eyes with lenses, in trapezoidal arrangement. Antennae slightly wrinkled. Median antenna inserted between eyes, lateral ones a little longer than half the length of the median antenna, inserted near anterior margin. Palps large, anteriorly rounded, fused at base. Peristomium bears two pairs of smooth tentacular cirri, dorsal ones slightly longer than ventral ones. Band of cilia behind tentacular cirri. Parapodia of chaetigers 2-5 large and distally truncated, remaining parapodia conical ans smaller. Dorsal cirri of 3 first chaetigers filiform, pseudoarticulated or articulated. From chaetiger 4, dorsal cirri articulated with 4-5 articles with glandular inclusions.

 

 

 

 

 

 

 

 

 

From chaetiger 13 a bundle of notopodial (epitokous?) capillary chaetae present in each parapod. Ventral cirri digitiform, longer than parapodial lobe. Cilia at bases of dorsal and ventral cirri.

 

 

 

 

 

 

 

 

Chaetigers 2-5 with enlarged aciculae and chaetae. Aciculae distally knobbed, about twice as large as in remaining chaetigers.

 

 

 

 

 

 

Dorsal simple chaeta thick, curved, with subdistal serrations.

 

 

 

 

 

 

 

   

 

 

 

 

6-8 unidentate compound falcigers with short, serrated blades and bifid shafts in anterior chaetigers.

 

 

 

 

 

 

 

 

 

 

 

Remaining chaetigers with slender chaetae and aciculae. Aciculae distally sharply bent.Simple

dorsal chaeta slightly curved, with subdistal serration and hooded tip.

 

 

 

 

 

One to two compound falcigers with long blades and five to six falcigers with short blades. Blades serrated, with large serrations at blade and fine serrations distally, tip sharply hooked, shafts bifid.

 

 

 

 

 

 

 

 

 

Pharynx unarmed, proventriculum from middle of chaetiger 5 to chaetiger 9, with 40 muscular rows. Coelom with sperm from chaetiger 10.