Esperella macrosigma Lindgren, 1897: 482 Lindgren 1898: 301 Paresperella macrosigma Dendy 1905: 162 Mycale species of the tropical Indo-West Pacific (Porifera, Demospongiae, Poecilosclerida) Van, Rob W. M. Aryasari, Ratih De, Nicole J. Zootaxa 2021 2021-01-19 4912 1 1 212 44RZQ Lindgren, 1897 Lindgren 1897 [151,771,223,250] Demospongiae Mycalidae Mycale Animalia Poecilosclerida 173 174 Porifera species macrosigma Paresperella      Esperella macrosigma Lindgren, 1897: 482;  Lindgren 1898: 301, pl. 19 figs 12a–d.    Paresperella macrosigma;  Dendy 1905: 162, pl. XL fig. 3.  Summary description. The specimen was damaged and macerated, so the description of the skeleton was not complete.The ectosome is an aegogropila-like reticulation of thin tracts, 2–3 spicules thick, and inbetween there are rosettes of anisochelae I. The choanosome has anastomosing spicule tracts which subdivide and form thin brushes near the surface. Spicules ‘normal’ mycalostyles curved sinuously, 480 x 14 µm, anisochelae I 48 µm, anisochelae II 24 µm, sigmas I, spined, 480 x 24 µm, sigmas II, spined, 140 x 6 µm.   Distribution. KoreaStrait, depth 116 m, and possibly Sri Lanka.   Comment. Dendy (1905)believed that a single large serrated sigma ( 394 µm) found in ‘deep water off Galle, SriLanka’ belongs to Lindgren’s species.