Hydroids of the family Halopterididae (Cnidaria, Hydrozoa) collected in the western Pacific by various French expeditions

摘要

This paper is the second result of the study of large collections of Plumulari-oidea (Cnidaria, Hydrozoa, Leptolida), collected in the seas surrounding NewCaledonia, in the Philippines and in Indonesian waters by French expeditions.A total of 13 species belonging to the genera Antennella (five species), Clado-plumaria (one species), Halopteris (four species), Monostaechas (two species)and Corhiza (one species) are described or mentioned in the present report;most of which are illustrated. Three new species, Antennella sinuosa n. sp.,Antennella megatheca n. sp. and Corhiza pauciarmata n. sp. are described andanother, Halopteris concava (Billard, 1911) is recorded for the first time sincethe original description. Two species, Antennella sp. and Monostaechas sp. areonly identified to the genus level.