146 General History of the Marine Polyzoa. 



Ibid. (p. 289). 



Scht'zoporella concinnaj sp. n. 



There may be a doubt as to the germs to which this species 

 is referable. At first sight the orifice seems to agree in 

 structure with tliat which is cliaracteristic 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 crossed by a very distinct 

 hinge-line in connexion with two lateral 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 himunita, sp. n. 



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, uliich radiate 

 from the circumference towards the stem. The large ooecial 

 cells form conspicuous groups. 



Ibid. (p. 296). 



Lepralia lancifera^ sp. n. 



It has been suggested that this form may be identical with 

 Herneschara imhellis, Busk, described and figured in his 

 * Monograph on the Crag Polyzoa.' This sj)ecies 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. pi. vi. tigs. 2, 2 a. 



