CLASSIFICATION OF LUCERNARIA
PHYLUM :- COELENTRATA (Tissue grade, diploblastic and acoelomate. )
CLASS :- SCYPHOZOA (Medusa well developed, hydroid reduced.)
ORDER :- STAUROMEDUSAE (Gastrovascular septa present-Two kinds of nematocysts are present katrichous isorhizas and microbasic heterotrichous euryteles.)
GENUS :- Lucernaria
It is found in India; Crusade Islands, America Cape Cod to Greenland (USA) and Europe.
HABIT AND HABITAT
Lucemaria is sessile, sedentary and marine animal. It is inhabitant of bays, coastal waters mostly in colder parts.
GENERAL CHARACTERSTICS OF LUCERNARIA
- Lucemaria and its allied genera can be compared to sexual scyphistomes as persistent larval forms.
- It is a small sessile scyphozoan with a polypoid, goblet or trumpet-shaped body that flares at the oral end into a broad concave sub-umbrella and tapers aborally into a long or short stalk or peduncle.
- Peduncle is attached temporarily to sea-weeds by foot gland.
- Umbrellar margin is divided into 8 prominent, short hollow, adhesive lobes or arms.
- Each arm possesses a cluster of short, knobbed adhesive tentacles at its end.
- Mouth is cruciform (four-cornered) with small oral lobes and a short manubrium.
- Internally gastrovascular system consists of a central stomach and four per radial pouches divided by inter-radial septa.
- There are several gastric filaments Gonads are band-like, borne on septa. Marginal statorhabs or anchors, velum and tentaculocysts are absent.
- It breeds in all seasons. Sex cells are ejected through mouth.
- The animal contains 8 prominent arm and all above features, hence it is Lucernaria.