ZOOPHYTOLOGY. 125 
probably deserves to be raised to the rank of a distinct 
generic type, in which case the name of Kucratea (Aud.) 
might be retained for it and the &. Cordiert of the same 
author. 
2. Fam. Saticornariap#, Busk (‘B. M. C.,’ p. 15). 
2. Gen. Nellia, Busk (‘ B. M. C.,’ p. 18). 
Ll! W. Johnsoni, nu. sp. Pl. XIX, fig. 2. 
Front of cell pyriform, pointed at bottom; margin raised, thick, smooth. 
Mouth semi-orbicular, lower lip straight. Ovicell (?). 
Hab. Madeira, Johnson. 
Two small fragments only occur of this apparently distinct 
form. The natural size is shown in the plate. 
3. Fam. Bicertariap#, Busk (‘B. M. C.,’ p. 41). 
3. Gen. Bugula, Oken. 
1. B. gracilis, n. sp. Pl. XIX, fig. 1. 
Cells biserial, elongated, of nearly uniform width throughout ; a short spine 
on each angle of the aperture. Aperture not extending below the middle of 
the cell. Avicularia capitate, blunt (?), of uniform size. 
Hab. Madeira, Johnson. 
Although, in the character of the cell, this species ap- 
proaches in some respects near to B. plumosa, and in the 
number of spines to B. turbinata (Alder), the comparative 
shortness of the aperture and, above all, the extremely dif- 
ferent habit, so far as that can be judged of from the small 
specimen seen by us, appear to afford sufficient grounds for 
‘its being regarded as distinct from either. . 
3. B. flabellata ? Thompson. 
a. var, biseriata s. Ditrupe. 
Although we have named the form as above, it will 
probably have to be regarded as a distinct species. Its 
habitat is very peculiar, and as in the very numerous 
specimens shown to us by Mr. Johnson, the most remark- 
able uniformity was exhibited, both in this respect, and in 
general size and habit, and no indication whatever existed of 
a nearer approach to the usual form of B. flabellata, this 
supposition is rendered the more probable. The Bugula 
always grows in a small tuft, about half an inch in height, 
and consisting of three to four narrow branches, close to the 
mouth of a species of Ditrupa (D. acuminata). It might on 
this account, perhaps, be denominated B. Ditrupe. A figure 
and fuller description of it will be given in a future number 
of the ‘ Journal.’ 
