The sphaeromatid genus Paracilicaea

Seven species of Paracilicaea are recorded from intertidal habitats on the coasts of Somalia and the Yemen, Western Indian Ocean. Paracilicaea falcata n. sp., P. mirabilis n. sp., P. nodosa n. sp., P. peniculata n. sp. and P. uncinata n. sp. are described. The genus Paracilicaea Stebbing 1910 from the Indo-Pacific region is revised and redefined. Four species are excluded from Paracilicaea and are here regarded as "incertae sedis": P. dakini (Tattersall 1922), P. fimbriata Kussakin et al. 1990, P. hamata (Baker 1908) and P. septemdentata (Baker 1910). A key to the species of the genus is given, together with a synoptic list of all species, with their synonymy and distribution