266 On Prof. G. Sequenza’s List of Tertiary Polyzoa. 
Johnston. The oval and pointed avicularia, which are so 
characteristic of the species, are noted, and the pore, which is 
usually present on the front of the ocecium, is represented in 
the figure. The granulose condition of the surface is often 
met with in old specimens. 
Lepralia radiato-porosa, Seguenza (p. 129, pl. xii. fig. 19). 
A mere variety of Schizoporella unicornis, Johnston (in- 
cluding ZL. ansata, Johnston). ‘The only characters noticed as 
distinctive are a larger number of radiating lines of pores than 
usual and a more prominent central umbo. Such slight super- 
ficial differences are without any special significance amongst 
the Polyzoa. ‘The size of the umbo is one of the most vari- 
able characters. 
Lepralia eximia, Seguenza (p. 203, pl. xiv. fig. 238). 
There can be little doubt, I think, that this is identical with 
Membraniporella nitida, Johnston. So far as I know, the 
species has not previously been recorded asa fossil. Its range 
in time is now extended to the Pliocene period. 
Lepralia Calabra, Seguenza (p. 201, pl. xv. fig. 6). 
Undoubtedly a form of the protean Aicroporella ciliata, 
Pallas. In this species there is the greatest possible diversity 
in the size of the cells; the present seems to be a somewhat 
diminutive variety. Altogether this Phocene form exhibits a 
very small amount of divergence from the type as compared 
with many of the known varieties; the specific facies is 
strongly marked in it. J/. ciliata is as variable as it is cos- 
mopolitan. 
Lepralia mitrata, Seguenza (p. 203, pl. xv. fig. 8). 
Referable to Cribrilina radiata, Moll, form c¢nnominata. 
The large size of the cells, the small number of prominent 
radiating ridges, the depth of the dividing furrows, giving a 
strongly crenate appearance to the margin, the papillose 
oceciuin, ail these are well known as occasional conditions 
amongst the many varieties of this variable form. They 
have none of them any specific value, as the study of any 
large series of specimens will abundantly show. 
Lepralia coronata, Seguenza (p. 295, pl. xvii. fig. 6). 
A variety of Microporella Malusti, Audouin, chiefly re- 
markable for the curiously furrowed surface of the ocecium, 
