WEST COAST HYDEOIDS 47 



Bale described this species in 1888 under the name, Halecium 

 gracile. This name has later been used for the same species by 

 Clark, Jaderholm^^ and Billard/^ but the name was preoccupied 

 by Verrill-° in 1874, and later used by Fewkes"^ and Nutting.-- 

 In consequence I have taken the liberty of using Bale's name in 

 the substitution. 



HALECIU:M COREUCtATUM Nutting 



Halecium corrugatum Nutting, Hydroids from Alaska and Puget Sound, 

 1899, p. 745. 

 Distribution. — Puget Sound (Nutting). 



HALECIUM DENSUM Calkins 

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

 Distribution. — Bremerton (Calkins) ; Port Renfrew, Ucluelet, 

 San Juan Archipelago. 



HALECIUM HALECINUM (Linnsus) 



Serttilaria halecina LiNN^us, Systema Natura?, 1767, p. 1308. 

 Halecium halecimim Nutting, Hydroids of Alaska and Puget Sound, 1899, 

 p. 741. 



Halecium halecinum Nutting, Hydroids of the Harriman Ex. 1901, p. 179. 



Distribution.— Puget Sound (Nutting) ; Kadiak, Alaska (Nut- 

 ting) ; Ucluelet. 



HALECIUM KOFOIDI Torrey 



Halecium l-ofoidi Torrey, Hydroida of the Pacific Coast, 1902, p. 49. 

 Halecium l-ofoidi Torrey, Hydroids of San Diego, 1904, p. 11. 



Distribution. — San Diego, Catalina Island, Cal. (Torrey) ; Cor- 

 onado Island, Mexico (Torrey) ; San Juan Archipelago. 



HALECIUM MURICATUM (Ellis & Solander) 



Sertularia muricata Ellis & Solander, Nat. Hist. Zooph., 1786, p. 59. 



Halecium muricatum Clark, Alaskan Hydroids, 1876, p. 217. 



Halecium muricatum Nutting, Hydroids of the Harriman Ex. 1901, p. 180. 



Distribution. — Unalaska (Clark) ; Orca, Alaska (Nutting). 



18 Aussereuropaische Hydroiden, 1903, p. 266. 



19 Ex. du Travailleur et du Talisman, 1907, p. 163. 



20 Invertebrated Animals of Vineyard Sound, 1874, p. 729. 



21 Guide to a Collector, 1891, p. 36. 



22 Hydroids of Wood's Hole, 1901, p. 358. 



