WEST COAST HYDEOIDS 49 



HALECIUM SCUTUM Clark 



Halecium scutum Clark, Alaskan Hydroids, 1876, p. 218. 



Halecium scutum Nuttixg, Hvdroids of the Harriman Ex. 1901, p. 180. 



Distribution. — Semidi Islands to Unalaska (Clark) ; Berg In- 

 let and Yakutat (Nutting) ; San Juan Archipelago. 



HALECIUM SPECIOSUM Xutting 

 Halecium speciosum Xuttixg, Hydroids of the Harriman Ex., 1901, p. 181. 

 Distribution. — ^Yakutat, Alaska (Nutting). 



HALECIUM TELESCOPICUM Allman 



Halecium telescopicum Allman, Challenger Eeport, Part II, 1S88, p. 10. 

 Halecium telescopicum- Jaderholm, Hydroidenfauna der Beringsmeeres, 

 1907, p. 4. 



Distribution. — Bering Sea (Jaderholm). 



HALECIUM TENELLUM Hincks 



Halecium tenellum Hincks, Ann. and Mag. X. H., 3rd Ser. 8, 1861, p. 2.52. 

 Haleciuvi tenellum Clark, Hydroids of the Pacific Coast, 1876, p. 225. 



Distribution. — San Diego, Cal. (Clark) ; San Juan Archi- 

 pelago. 



HALECIUM WILSOXI Calkins 



Halecium icilsoni Calkins, Some Hydroids of Puget Sound, 1899, p. 343. 



Halecium wilsoni Hartlaub, Hydroiden aus dem Stillen Ocean, 1901, p. 

 350. 



Distribution. — Bremerton (Calkins) ; Bare Island (Hartlaub) ; 

 Ucluelet, San Juan Archipelago. 



Besides finding specimens of this species with the male gono- 

 some similar to that described and figured by Calkins, I found 

 others to which the same description of the trophosome applies 

 but with female gonosomes. The gonangia of these are shaped 

 like the male gonangia of the species and have the openings simi- 

 lar and similarly placed. When the ova are within the gonangia, 

 they appear to be very irregularly arranged, but when they are 

 extruded into the globular acrocyst, the cause is evident. There 

 is the same irregular branching from the spadix as in the male, 

 giving the whole gonosome a fantastic appearance when viewed 

 from the exterior. The fact that this female gonosome is smaller 

 than the male, though unusual, will scarcely make it doubtful 

 that it belongs to the same species. 



