The Growth Stages and Adult Structure of the Lophophore of the Brachiopods Megerlia Truncata (L.) and M. Echinata (Fischer & Oehlert)

Megerlia truncata and M. echinata dredged by R.V. ‘Sarsia’ have been examined living. The growth stages of the lophophore are described and figured, the series being fuller in M. echinata than in M. truncata. The adult lophophore of M. truncata has been sectioned and its structure described. The ciliary feeding mechanism in Megerlia is similar to that already described by the author in brachiopods with plectolophous lophophores