LAOFEA VENUSTA. H 



Thyroscyphus ramosus. 



PL VI. Figs. 5, 6. 



Trophosome. — Hydrocaulus attaining a height of about two inches, much 

 and rather irregularly branched. Hydrothecas alternate, large and deep, 

 oblique at the inner side of the base, supported each on a short peduncle 

 which consists of two oblique rings and which springs from the summit of 

 a short thick process given off from the distal end of the internode ; orifice 

 with a narrow border ; opercular valves broadly triangular. 



Gonosome not known. 



Dredged south of Sand Key from a depth of 10 fathoms. 



Thyroscyphus ramosus is a large and strong species, rendered striking by 

 its large valvular and bordered hydrothecae. It contrasts markedly with 

 the other operculate Campanularin^e, which are all, so far as is known, small 

 and delicate forms. 



Genus CAMPANULARIA Lamarck (in part). 

 Campanularia macroscypha. 

 PL VIII. Figs. 1, 2. 

 Trophosome. — Peduncles short, rising from a creeping stolon, marked with 

 a few distant annulations, and having a discoid internode just below the 

 hydrotheca. Hydrothecae large, cylindrical from above downwards for the 

 greater part of their length, and then tapering rapidly to the base ; orifice 

 cut into about twelve conspicuous, rather blunt teeth. 

 Gonosome not known. 



Dredged off Sand Key from a depth of 120 fathoms. 



This is a simple creeping species, and though of humble growth is re- 

 markable for the large size of its hydrothecae. 



Family LAFOEID^ Lamouroux. 



Genus LAFOEA.* 

 Lafo'ea venusta. 



PL VI Figs. 3, 4. 

 Trophosome. — Hydrophyton minute, creeping. Hydrothecae borne on 

 moderately long, slightly corrugated peduncles, which spring at short in- 



* It is difficult to find characters for the definition of the genus Lafoea. I regard, however, as an 

 essential character of the genus the absence of any definite floor to the hydrotheca, a character which 



