vol. i.i Torre y. — Hydroida of the Pacific Coast. 53 



Campanularia hincksi Alder. 



Campanularia hincksU, Alder, Trans. Tyues. F. Club, 1857, III, p. 127. 

 Hineks, Brit. Hydr. Zooph., 1868, p. 162. 



Distribution. Mouth of San Diego, Cal.; shallow water, 

 shelly bottom. British coasts (Hineks), from 10— :2( t fathoms to 

 deep water. 



In the San Diego specimens the diaphragm is not so heavy as 

 in Hineks's figures. The gonothecae may have 15-18 rings. 

 July 13, 1901. 



Campularia pacifica (A. Ag.) 



PI. IV. Figs. 39, 40, 41. 

 Laomedea pacifica, Agassiz, 111. Cat., 1865, II, p. 94. 



Trophosome. Stems stout, frequently reaching a length of 200 mm. ; 

 branching profusely, forming an exceedingly dense and bushy colony. 

 Stem and larger branches polysiphonic ; 2-4 annulae above the origin of 

 each branch. Hydrothecae borne on pedicels of moderate length, usually 

 annulated throughout; 5-8 annulae; deep, gradually tapering to base, rim 

 with ten teeth, each with two cusps. Hydranth with 26 tentacles. 



(iiinnsome. Gonothecae elongated, clubshaped, female somewhat broader 

 than male; bottle neck and moderate round aperture. Gonophores fixed 

 sporosacs. 



Distribution. San Francisco Bay. Gulf of Georgia, Wash., 

 and San Francisco, Cal. (Agassiz). Bering Str., Avatska Bay, 

 Kamtschatka (Stimpson) . 



This is a common species in Oakland Harbor the year round, 

 where it flourishes in the brackish and dirty water, attached to 

 the supports of wharves and bridges, between tides. The 

 branches arise in all planes, and with the exception of occasional 

 stem-like branches, are short. Two usually appear at the same 

 point, one at right angles to and much smaller than the other. 

 Both rebranch profusely. 



Gonophores are produced from March to November at least. 

 They show no traces of bell. The endoderm of the manubrium 

 is lobed as in Gonothyrcea and serves as a nutritive organ for the 

 sex cells. There may be six, eight or even more ova in the 

 larger gonophores, which vary in number from four to twelve or 

 fifteen. 



