02 Placida dendritica

02 Placida dendritica

Left: Drawing in Alder & Hancock (1845-1855).
Right: 3.6 mm long. On Bryopsis growing epiphytically on Halidrys. Sublittoral. June 2018. Menai Strait. Leg. P. Brazier.
The pericardium (1) is a swelling behind the head with a faintly pinkish anus (2) at its anterior.
The cerata are transparent, showing the green diverticula of the digestive gland extending to the apex which has no cnidosac.