98 Mr. A. W. Wafers on 



not come before me, nor had the specimens first met with any 

 ovicells, but they occur from Oraii and trom Capri. Neviani 

 evidently had very small pieces fossil, and did not describe 

 any ovicell. He spesdcs of it as incrusting, though with frag- 

 ments it might be diflficult to be certain of this; from Naples 

 and Capri it is unilaminate, whereas from Oran all except 

 one piece are bilaniinate, back to back. JuUien and Calvet, 

 in describing L. prinialdi, do not say whether it is uni- or 

 bilaminate. 



Neviani described the surface as rngose, JuUien and Calvet 

 say with small perfoiations, and both are correct as regards 

 Capri and Oran specimens, which are covered by large 

 grannies and in between there are small pore-*. The nature 

 of the graiiubs varies in different parts and in some con- 

 ditions they are the most noticeable, while in others the pores 

 are the most distinct, hut none could be described as smooth. 

 The piece figured is very regular, but this is not always the 

 case. 



There is a small triangular avicularium at one or both of 

 the nppcr corners of the Z' oecium. 



There are about 27 tentacles in the Naples specimens. 

 There are usually 4 distal muliiporous rosette-plates near 

 to the basal wall and 4-6 lateral ones. 



The ovicell is coarsely granular, but the granules are not 

 so large as those figured by Juilien and Calvet. It is 

 not raised, but shows beyond the ornl fiperfure buried in the 

 distal zooecium. The ovicelligerous zooecia have a much 

 wider end aperture than the ordinary zooecia, with the 

 proximal edge straight, while the distal border forms 

 the curve of a wide arc (see fio-. g). The ovicell has much 

 the same shape as that ol' 1" lustra foliacea, L., passing to the 

 basal wall, the wall between the distal end of the zooecium 

 and the ovicell does not aj)pear to be calcareous. 



It is very ditiicidt to know in which genus this should be 

 placed. Neviani * made the genus Hippnporina for all species 

 indicated by modern authors as Lepralia — that is to say, all 

 that have a horseshoe-shaped oral apeiture; he then men- 

 tions II. perlusa, E-'per, which should therefore be the type 

 oi Ilippoporina. In Part II. of the same paper, also 1895, 

 he mentions H. foliacea, Ell. & Sol., and then H. Integra, 

 sp. n., which he figures. Canii calls this the type, but it is 

 not the first mentioned. In Part III., 1896, Neviani men- 

 tions H. imhelUs, Busk, and Il.adpressa, Busk; then, further 



* "Bri. neoz. di alcune Localita d'ltalia," 1895, p. 100, and Waters, 

 " Bry. Irom Zanzibar,'" Proc. Zool. Soc. 1913, p. 515. 



