146 General History of the Marine Polyzoa. 
Ibid. (p. 289). 
Schizoporella concinna, sp. n. 
There may be a doubt as to the genus to which this species 
is referable. At first sight the orifice seems to agree in 
structure with that which is Characteristic of Schizoporella ; 
but there are peculiarities which may create a doubt. ‘The 
sinus is placed in the centre of a thin raised lamina which 
overhangs the orifice below, taking the place of the lower 
margin, and continuous with the sides of the orifice. Imme- 
diately behind this lamina is “ the ridge-like elevation of the 
cell-wall,” which is carried up along the sides of the orifice *. 
The true operculum, which is membranaceous, extends to the 
top of the basal lamina, where it is erossed by a very distinct 
hinge-line in connexion with two Jateral denticles. A mem- 
branous extension of the operculum passes downward behind 
the raised lamina. In some respects the orifice of this species 
bears a resemblance to that of Lepralia; but as the lamina 
which carries the sinus seems to be distinctly continuous with 
the side-walls of the orifice, there seems to me to be no struc- 
tural difference of any significance between this form and 
Schizoporella. 
Ibid. (p. 290). 
Schizoporella bimunita, sp. 0. 
In this species one of the large avicularia on the front wall 
is not unfrequently absent. 
A very fine specimen, obtained by Miss Jelly from Port 
Elizabeth, is somewhat fan-shaped, borne on a short thick 
stem; the surface is traversed by rib-like lines, which radiate 
from the circumference towards the stem. The large ocecial 
cells form conspicuous groups. 
Tbid: \(p2296)): 
Lepralia lancifera, sp. n. 
It has been suggested that this form may be identical with 
Hemeschara tmbellis, Busk, described and figured in his 
‘Monograph on the Crag Polyzoa.’ This species had been 
previously characterized by Milne-Edwards under the specific 
name pertusa; but as this designation had been already 
* See ‘ Annals,’ ser. 6, vol. vii. pl. vi. figs. 2, 2a. 
