1897 Spirastrclla arcolata Dy. Cf. p. 21. 



1897 Spirastrclla aurivilli Lindgr. Cf. p. 21. 



1897 Spirastrella bistellata (O. S.) Ldfd. Cf. p. 8. 



1897 Spirastrella carnosa Tops. Cf. p. 22. 



1897 Spirastrella corticata Dy. p. 255; see also Carter 1879 («) p. 330. Dendy seems to 



wish to bring Carter's Latrune 11 la (sic) corticata to the genus Spirastrella. As, 



however, the sponge under consideration possesses oxea and no styli or tylostyli, 



I prefer not to include it into Spirastrclla. 

 1897 Spirastrella fibrosa Dy. p. 254 — 255. Judging from a microscopical preparation I 



examined in the British Museum, I believe this sponge does not belong to Spirastrclla. 

 1897 Spirastrella robusta Dy. Cf. p. 22. 



1897 Spirastrclla semilunaris Lindgr. Cf. p. 23. 



1897 Spirastrella spinispirulifer Dy. p. 251. Provisionally I do not include this species 



into the genus Spirastrella, the spinispirae possessing quite another character. 

 Perhaps it is identical with S. coronaria. 



1898 Spirastrella iusignis Thiele. Cf. p. 23. 



1898 Spirastrella panis Thiele. Cf. p. 24. 



1899 Spirastrella inconstans (Dy.) Thiele. Cf. p. 18. 



1900 Spirastrclla lacunosa Kieschnick, p. 575. Insufficiently described ; no illustration. See 



also: 1905 Dragnewitsch p. 13 and 1909 Hentschel p. 386. 

 1900 Spirastrella minax Tops. Cf. p. 20. 



1900 Spirastrella spiciilifcra Kieschnick, p. 575. Insufficiently described; no illustration. 



1905 Spirastrella tentorioides Dy. Cf. p. 24. 



1906 Q3) Spirastrella bonnet i Tops. Cf. p. 25. 

 1909 Spirastrclla digitata Hentschel. Cf. p. 25. 



III. LIST OF SPECIES, DESCRIBED UNDER DIFFERENT NAMES BUT 



BELONGING TO SPIRASTRELLA. 



(chronológically). 



1 8 1 5 Alcyoniuin purpureutn Lmk. Cf. p. 7. 



1862 Tethya bistellata O. S. Cf. p. 8. 



1864 Suberilcs bistellatus O. S. Cf. p. 8. 



1870 Chondrilla phyllodes O. S. pp. 26, 78, 88; PI. VI, fig. 1. Evidently no Cliondrilla ■ 



probably a Spirastrella. I refrain from deciding whether or not it is identical 

 with 5. purpnrea. See also: 1877 (a) Schulze, 1879 (a) Carter, 1881 Carter, 

 1882 Carter, 1889 (<z) Dendy, 1889 Topsent, 1894 Topsent, 1896 (y) Topsent, 



I9O2 VOSMAER. 



1872 Hymeniacidon angnlata Bvvk. Cf. p. 10. 



1872 Hymeniacidon pulvinatus (sic) Bwk. Cf. p. 11. 



