Euplectella brevis n.sp. Bowerbank, 1861c: 71.
Polymastia brevis : Bowerbank, 1866: 62; 1874: pl. XI, figs. 1-9.
Bursalina muta n.sp. Schmidt, 1875: 116, pl. I figs. 3-4.
Quasillina brevis : Norman, 1868: 329; Vosmaer, 1885: 20; Topsent, 1900: 157; Arndt, 1913: 113; Stephens, 1914: 30; Prenant, 1927; Burton, 1930a: 496; Brøndsted, 1932: 6; Arndt, 1935; 36; Alander, 1935: 3; Burdon-Jones and Tambs-Lyche, 1960: 6; Borojevic et al., 1968: 8
?Quasillina richardi : Burton, 1930a: 496; Burton, 1931: 8; Alander, 1935: 3