^S". F. Clark — Ilydroids of the Pacific Coast. 



251 



Par3'plia microcephala A. Ag. 

 Bimeria gracilis Clark. 

 Bougainvillia Mertensii Agassiz. 

 Eudendrium, sp. 

 Campauularia everta Clark. 



Campanularia fusiformis Clark. 

 Campanularia cyliudrica Clark. 

 Laomedea rigida A. Ag. 

 Laomedea Pacifica A. Ag. 



Lafoea dumosa Sars. 

 Halecium tenellum Hincks. 

 Sertularia angiiina Trask. 



Sertularia anguina, var robusta Clark. 



Sertularia argeutea E. and S. 

 Sertularia pumila Linn. 

 Sertularia Greenei Murray. 



Bay of Sau Francisco, Cal. (A. Agassiz). 



Sau Diego, Cal. (E. Palmer). 



Bay of San Francisco, Cal. (A. Agassiz). 



Santa Cruz, Cal. (C. W. Anderson). 



San Diego, Cal. (H. Hemphill), to Vancouver 



Island (J. M. Dawson). 

 Vancouver Island (J. M. Dawson). 

 Santa Cruz, Cal. (C. W. Anderson). 

 Bay of San Francisco, Cal. (A. Agassiz). 

 Gulf of Georgia (A. Ag.) to Bay of San 



Francisco (A. Agassiz). 



San Diego, Cal. (Dr. E. Palmer). 



Santa Cruz, Cal. (C. "W. Anderson), to Van- 

 couver Island (J. M. Dawson). 



San Diego, Cal. (H. Hemphill), to Vancouver 

 Island (J. M. Dawson). 



Santa Barbara, Cal. (Mrs. EUwood Cooper). 



Sertularia furcata Trask. 



Sertularia corniculaia Murray. 

 Sertularella turgida Clark (Trask). 



Plumularia setacea Lamarck. 



Santa Barbara, Cal. (Mrs. P]llwood Cooper), 

 to Vancouver Island (J. M. Dawson). 



San Diego (Dr. E. Palmer), to Bay of San 

 Francisco (J. B. Trask). 



Bay of San Francisco (A. Murray). 



San Diego, Cal., to Vancouver Island (J. M. 

 Dawson). 



San Diego, Cal. (Dr. E. Palmer), to Van- 

 couver Island (J. M. Dawson). 

 Aglaophenia struthionides Clark (Murray). San Diego, Cal. (D. C. Cleveland), to Van- 

 couver Island (Miss Mitchell). 



This list of twenty-four species is very small compared with that of the 

 eastern coast, from Maine to New York, the fauna of the latter region 

 containing five times as many species as that of the former, notwith- 

 standing that the i-egion included on the western coast is over thirteen 

 hundred miles in length, while that of the New England coast is only 

 about eight hundred. It should be borne in mind however that 

 most of the collecting on the Pacific coast has been done along the 

 shore, the dredge having been little used, and there is little doubt that 

 when the fauna has been more thoroughly investigated the number 

 of Hydroids may be at least doubled. Such a variety as exists on 

 the New England coast can hardly be expected from our Pacific 

 shores south of Vancouver Island, for the waters there do not afford 

 the same diversity in temperature. 



