250 BENNITT. 



Family SERTULARIDAE. 

 Genus Sertularella. 

 Sertularella speciosa Congdon, 

 Congdon, 1907, p. 476, figs. 24-28. 



Sertularella tenella Alder. 



Alder, 1857, p. 23. 



Hartlaub, 1901, p. 63, Taf. 5, figs. 21-24, Taf. 6, figs. 2, 4, 7, 9, 10. 



Nutting, 1904, p. 83, pi. 18, figs. 1, 2. 



A large number of colonies, about 9 mm. high (Nutting's specimens 

 were 12.5 mm. high), were found among branching Bryozoa in a col- 

 lection made in 1903 by Dr. A. W. Weysse. The trophosome agrees in 

 every way with that described by Nutting and by Hartlaub; occa- 

 sional branches are given off at right angles to the stem, and the hydro- 

 thecal walls may be nearly smooth or may have six or seven well- 

 marked annulations. The gonangia are one and a half to two times 

 the length of the hydrothecae. 



Genus Sertularia. 

 Sertularia brevicyathus (Versluys). 



Desmoscyphus brevicyathus, Versluys, 1899, p. 40, figs. 9, 10. 

 Sertularia brevicyathus, Nutting, 1904, p. 60, pi. 6, figs. 1, 2. 

 Sertularia brevicyathus, Congdon, 1907, p. 481. 



Numerous colonies of this little Sertularia were found on a gorgo- 

 nian stem and on algae dredged in 1903 at four stations on the Challen- 

 ger Bank, about 15 miles southwest of Bermuda, in 31-70 fathoms. 

 Others were collected on Sargassum near Agar's Island. 



Sertularia cornicina (McCrady). 



Dynamena cornicina, McCrady, 1858, p. 102. 

 Sertularia complexa, Nutting, 1901, p. 360, fig. 57. 

 Sertularia cornicina. Nutting, 1901, p. 359, fig. 56. 

 Sertularia cornicina. Nutting, 1904, p. 58, pi. 4, figs. 1-5. 

 Sertularia cornicina, Fraser, 1912, p. 374, fig. 38. 



