CLASSIFICATION OF SABELLARIA
PHYLUM :- ANNELIDA (Metamerically segmented, coelomate and laterally symmetrical. )
CLASS :- POLYCHAETA (Many setae, clitellum absent. )
ORDER :- TUBICOLA (Tubicolous, sedentary and proboscis non-protrusible, without jaws or teeth.)
GENUS :- Sabellaria
Found in Europe and U.S.A.
HABIT AND HABITAT
Sabellaria is a marine, sedentary polychaete, more or less Y-shaped. The animals live in simple tubes in sand formed by them.
GENERAL CHARACTERSTICS OF SABELLARIA
- Body is elongated, segmented and cylindrical with a broad and bifurcated anterior end. The rest of. the body tapers posteriorly.
- Animal projects through the sandy tube.
- Head is constituted by the prostomium and peristomium. The prostomium contains a pair of tentacles.
- Peristomium fuses with the palps and becomes comparatively larger and branched.
- Dorsal cirri are modified as gill filaments.
- Each metamere except first and last possesses a pair of appendages or podia.
- Sabellaria often occur in large closely set colonies.
The animal has bifurcated anterior end and all above characters, hence it is Sabellaria.