184 CAMPANULARIID^E. 



The calycles are of a most elegant form, deep and nar- 

 row, tapering off gradually towards the base, but having 

 the sides parallel for the upper two-thirds of their length. 



The capsules are borne on the creeping fibre as well as 

 on the stem, and not exclusively on the latter as stated 

 by Sars ; they are longer than the calycles, but slenderer, 

 somewhat narrowed towards the truncate top, of a pro- 

 duced oval shape below, tapering off towards the base. 



Sars has described the female gonozooids. The sporo- 

 sacs, when attached to the top of the capsule, are furnished 

 with a circle of short tentacles, and contain two ova. 



Hab. On the tests of Ascidians, sponge, and zoophyte ; 

 dredged in Birterbuy Bay, Conuemara (G. S. Brady). 



[Bergen, attached to Laminaria saccharina, not rare 

 (Sars). The same naturalist describes a form found at 

 Messina, which he regards as a variety of the above. It 

 differs from it in having somewhat shorter and broader 

 calycles, with smaller denticles on the margin.] 



Referred provisionally to this genus. 



G. ? HYALINA, Hincks. 



' On now British Hydroida," Ann. N. H. xviii. (3rd ser.) 297. 



Plate XXXV. fig. 2. 



SHOOTS densely clustered on the creeping stolon, tall and 

 much branched; MAIN STEMS very slightly flexuous, of a 

 deep horn-colour below, becoming white and very delicate 

 towards the upper extremity, giving off branches at each 

 bend, strongly annulated at the base and above each 

 division ; branches erect, flexuous, very tender and hya- 

 line, sometimes of great length and much ramified a single 

 calycle or a branch springing from each axil; HYDRO- 

 THEC.E alternate, much elongated, slender, of very thin 



