68 C. McLEAN FRASER 



Genus SERTULAEELLA 



SERTULARELLA ALBIDA Kirchenpaiier 



Sertulardla robusta Clark, Alaskan Hydroids, 1876, p. 225. 

 Sertwlarella albida Kirchenpauer, Nordische Gattungen, 1884, p. 42. 

 Sertularella albida Nutting, American Hydroids, Part II, 1904, p. 86. 



Distribution. — Yukon Harbor, Big* Koniushi, Shumagin Is- 

 lands, 6 to 20 fathoms (Clark). 



SERTULARELLA CLARKII Mereschkowsky 



Sertularella clarkii Mereschkowsky, Ann. and Mag., Sth Ser., II, 1878. 

 p. 447. 



Sertularella clarkii Nutting, American Hydroids, Part II, 1904, p. 102. 



Distribution. — Unalaska (M. Petelin), 1847. 



SERTULARELLA COMPLEXA Nutting 

 Sertularella complexa Nutting, American Hydroids, Part II, 1904, p. 94. 

 Distribution.— Albatross Station 2843, N. 53° 56', W. 165° 



56', 45 fathoms; Station 2853, N. 56°, W. 154° 20', 159 fathoms; 



Station 2858, N. 58° 17', W. 148° 36', 230 fathoms; Station 3500,. 



N. 56° 02', W. 169° 30', 121 fathoms (Nutting). 



SERTULARELLA CONICA Allman 



PI. VI, Figs. 2-4 



Sertularella conica Allman, Hydroids of tlie Gulf Stream, 1877, p. 21. 

 Sertularella conica Calkins, Some Hydroids of Puget Sound, 1899, p. 3.59. 

 Sertularella conica Nutting, American Hydroids, Part II, 1904, p. 79. 



Distribution. — Townshend Harbor (Calkins) ; San Juan 

 Archipelago, Port Renfrew, Ueluelet. 



Prof. Nutting is doubtful if S. conica Calkins, is really the 

 same as 8. conica Allman. I have found many specimens in the 

 Puget Sound material as well as in the material from Port Ren- 

 frew and Ueluelet that have the four-flapped operculum, and 

 seemingly all the other characteristics of *S'. conica Allman, con- 

 sequently, I believe that the diagnosis was correct. In the Port 

 Renfrew material I found gonangia, which as far as I know, have 

 not yet been described. They resemble the gonangia of 8. poly- 

 zonias, but they are not nearly so large. They are peculiar in 

 that they have their origin directly from the stolon, from which 

 the unbranched stems arise. Sometimes they appear singly, but 

 sometimes several of them are grouped together. They are 

 formed, evidently, while the colony is very young, as in the same- 



