84 Mr. A. W. Waters on 
one layer has been called Batopora stoliczkai, Rss.*, and in 
very many localities both the first and mature stage have 
been found together. In sections, as in Pl. VI. fig. 4, the 
two layers are clearly seen, and also the interesting fact 
that the so-called “primordial Zelle” passes through the 
two layers. This has now to be called a pit, and is homo- 
logous with the pit in the Spherophora fossa of Haswell. 
There are numerous tubes from the neighbouring zoeecia 
passing to the pit, and these were well seen during the 
preparation of the section ; also in S. fossa the large pores 
in the pit were seen to pass into Shere chambers in the 
zocecia (Pl. VI. figs. 2, 3). 
Reuss considered that the colony grew from this pit, but 
he had missed some points of structure, though, from a 
manuscript left relating to B. rosula and which Manzoni + 
published, he clearly understood that there were two layers 
in a mature form. Koschinsky seems to have considered 
that the conical form grew first and then became globular, 
but this is reversing the process. 
I think that one of the small zoccia in the centre of the 
first stage is the primary, and also in S. fossa the primary 
was probably some distance from the pit. The base cf the 
cone may also be covered by a secondary zoecial growth. 
The base of the cone usually shows the one row of radiating 
zocecia, but I have one specimen showing two rows (PI. V is 
fig. 5). 
B. multiradiata is usually 2-3 mm. in diameter, sometimes 
showing the second layer as a cap (Pl. VI. fig. 4a); this outer 
layer is very irregular, being by no means alw ays at the 
apex, In one the edge of the cap ends near to the pit. I have 
collected it mature from Brendola, Val di Lonte, Montecchio 
Maggiore, Priaboua, Malo, Ferrara di Monte Baldo, Creazzo 
near Lonigo, Vilmezzano, Mazzurega, aid the earlier or 
stoliczkai stage from Brendola, Val di Lonte, Montecchio 
Maggiore, Creazzo, Malo, Spiassi. 
The base of ang cone has the zocecia arranged radially, 
just as in Conescharellina, and between the two genera there 
are only secondary differences on this surface, though in 
Conescharellina we are unaware of any case of the two layers, 
nor is there any pit, though there seem to be cases of 
* Reuss was very near this idea, for, speaking of B. multzradiata from 
Val di Lonte, he says no other form is found and we cannot therefore 
hold it for a higher form of Latopora. Since then I have found many 
specimens of B. stoliczkai from Val di Lonte. 
+ “ Bri. foss. del. Mioc. d’Aust. ed Ungh.,” Denk. math. natw. Ak. der 
Wiel Wien, vol. xxxvii. p. 6, pl. il. fier, 6 (1877). 
