WEST COAST HYDKOIDS 81 



To^\■llsllend Bay ( Calkins 'i : Puget Sound to San Diego (Tor- 

 rev) ; San Juan Archipelago, Victoria, Port Renfrew, Ueluelet. 

 This is one of the commonest species of hydroids in the Van- 

 couver Island and Puget Sound Region. All phases of growth 

 may be found easily, and at no time is there much indication of 

 variation from the type. Corbulae have been present on almost 

 all of the colonies examined, and these show the same constancy 

 of type as is found in the various parts of the trophosome. 



Genus ANTENELLA 

 AXTEXELLA AVALOXIA Torrey 

 AnteneUa avalonia Torrey, Hyclroida of the Pacific Coast, 1902, p. 74. 

 Distribution. — Avalon, Catalina Island, Cal. (Torrey). 



Genus DIPLOCHEILUS 

 DIPLOCHEILrS ALLMAXI Torrey 



Halicornia producta Torrey, Hytlroida of the Pacific Coast. 1902, p. 75. 



Dip'tocheiJus allmani Torrey, Hydroids of San Diego. 1904. p. 36. 



Distrihution. — San Diego and Pt. Loma, Cal. (Torrey). 



The points of distinction between this species and Diplocheilus 

 mirabilis Allman. as given by Dr. Torrey, do not seem to be of 

 very great specific value, particularly as he says that '"The im- 

 maturity and paucity of my material makes it impossible to de- 

 termine the real value of these differences'*.*^' Steehow*'* reports 

 a species from the Japanese East Coast, which he considers is the 

 same as Torrey "s. He retains Torrey "s name for it. though in 

 his discussion he states definitely that he thinks there is not 

 enough distinction between D. mirabilis and D. allmani to war- 

 rant it. As neither he nor Torrey found any gonangia. each pre- 

 fers to speak of two distinct species until the presence of these 

 decide the question. 



Genus NUDITHECA 

 XUDITHECA DALLI (Clark) 



Macrorhynchia daiU Clark. Alaskan Hydroids, 1876, p. 230. 

 Kuditheca dalli Xxjttixg, American Hydroids, Part I, 1900. p. 129. 



Distribution. — Unalaska and Akutan Pass, Alaska, on the 



beach (Clark). 



67 Hydroids of San Diego, 1901, p. 36. 



es Hydroidpolypen der Japanischen Ostkiiste, I Teil, 1909. p. 88. 



