DESCRIPTIONS OF NEW GENERA AND SPECIES. 

Suzorper GYMNOBLASTEA. 
Famity EUDENDRIDA. 
Genus EUDENDRIUM Enrenpere (in part). 
Eudendrium eximium. 
Pi. I. Figs. 1, 2. 
Trophosome. — Hydrocaulus attaining a height of about six inches, much 
branched, with the main branches and subordinate ramuli alternate and 
distichous ; main stem and origin of the principal branches fascicled ; ulti- 
mate ramuli with nearly obsolete annulation at their origin. Hydranths 
with about twenty tentacula. 
Gonosome. — Female sporosacs springing irregularly from the body of the 
hydranth and from its supporting ramulus. 
Dredged from a depth of 43 fathoms off the Florida Reef. 
This is a fine species, rendered conspicuous by its size and by its profuse 
ramification. All the branches, both the primary ones and the subordinate 
ramuli, are in the same plane. The main stem is strongly fascicled, and 
towards its base acquires a thickness of nearly two lines. 
From £. ramosum of the European coasts the present species differs in 
the more extensive fasciculation of its main stem, in the disposition of its 
ultimate ramuli, which are not, as in Z. ramosum, confined to one side of 
their supporting branch, and in the absence of very decided annulation at 
the origin of the branches. 
All the specimens preserved in the collection are female, and the hydranth 
of the sporosac-bearing ramulus shows no tendency to atrophy. 
