TUBICLAVA CORNUCOPIA. 11 



It differs from it in having the polypites elevated on dis- 

 tinct stems, clothed with a polypary. There is also, as 

 Prof. Allmaii has remarked, an affinity between it and 

 Cordylopliora. 



I have so far modified the diagnosis as to make the 

 genus include the T. cornucopia, Norman, and have given 

 the grounds of the change in my account of that species. 



1. T. LUCERNA, Allman. 

 "Notes on the Hydroida," Ann. N. H. (3rd ser.) xi. 9 (Jan. 1803). 



STEMS quite simple, or rarely with a short lateral branch ; 

 polypary corrugated, dilated at the base of the polypitc, 

 pale yellowish brown ; POLYPITES when extended about 

 equal to the stem in height, white, with pale-ocJtreous 

 centre ; tentacula about 20, confined to the anterior third 

 of the body ; GONOPHORES borne in clusters behind the 

 lowest tentacles, and exactly resembling those of Clava. 



Zoophyte about 2 lines in height. 



Hab. Creeping over loose stones in a rock-pool, Torquay : 

 on stones between tide-marks, Dublin Bay (Of. J. A.). 



2. T. CORNUCOPI/E, Norman. 



TUBICLAVA CORNUCOPIA, A. M. Norman, Ann. N. II. (3rd ser.) xiii. 82 (Jan. .. 



1864), pi. ix. figs. 4, 5. 

 MKRONA CORNUCOPIA, Norman, Ann. N. H. (3rd ser.) xv. 202 (April 1805). 



Plate II. fig. 2. 



STEMS about a fifth of an inch in height, invested by 

 a small trumpet-shaped tube, very slightly curved, 

 which is somewhat transparent and more or less encir- 

 cled by raised lines of growth ; POLYPITES greatly elon- 



