Family Magelonidae

Magelona sp.
Magelona sp. (collected from Tai Long Wan).   Dorsal view of anterior region.


Magelona sp.
Magelona sp. (collected from Tai Long Wan).  Ventral view of anterior region.


Order Spionida
Family Magelonidae

Body: long and slender; divided into two regions
Prostomium: flattened, anteriorly ovate or tuncate; no appendage
Peristomium: fused with at least 2 segments
Eye: absent
Palp: 2 very long palps which are papillose distally present at the junction of the pro- and peristomium on the ventral side
Pharynx: eversible
Parapodium: biramous
Setea: capillaries and hooded bi- or multidentate hooks
(Fauchald 1977)

Biological Notes
        Magelonids burrow in muddy sand using the spade-like head and large distensible proboscis.   They are detritus feeders.   The food particles are gathered by a pair of very long palps which bear sticky papillae and brought to the mouth by muscular contraction (Day 1967).   They build very flimsy tubes and tend to move through the sediment (Fauchald 1977).

Genera and Species Reported in Hong Kong

Magelona crenulifrons