New species in two genera, Psammocinia and Ircinia (Demospongiae: Dictyoceratida: Irciniidae), from Korea Author Lee, Sue Yeon Author Yoo, Jung Sun Author Kim, Seung Tae text Journal of Species Research 2017 6 94 109 http://dx.doi.org/10.5281/zenodo.13161052 journal article 10.12651/JSR.2017.6 2713-8615 13161342 9. Ircinia tunica n. sp. ( Fig. 9 ) Type specimen. Holotype (NIBRIV0000754021), Korea : Mureungachi , Daejeong-eup , Seogwipo-si , Jeju-do , 17 Aug 2015 , Moon SE , by SCUBA , depth 20 m , deposited in the NIBR . Description. Thick round massive sponge, size up to 14 × 12 × 4 cm . Surface with indistinct conules. Almost entire surface covered with colonial tunicates, with thick collagenous filamentous membrane, oscules, 5 mm in diameter, rare. Colour in life grayish beige. Texture, very soft and compressible. Skeleton: Cylindrical primary fibres, 200-400 μm in diameter. Secondary fibres, 70-500 μm in diameter ( Fig. 9H ), appeared branch type and fascicles. Filaments, 3-7 μm in diameter, with terminal knobs, 10 μm in diameter. Etymology. This new species name tunica is named after colonical tunicate on the sponge surface which covered sponge, and similar to sponge colour. Remark. This new species is similar to Ircinia bergquistia due to its uncored primary fibres, but primary fibres of the new species are thinner than Ircinia bergquistia ’s (700-1100 μm in diameter).