Batopora and its Allies. 81 
The pit in the common Batopora multiradiata is found to 
continue through the two layers, for the mature zoarium 
consists of two or more layers, as described by Reuss and 
as figured by me * (see also Pl. VI. fig. 4). As the mature 
multiradiata is two-layered, we should be able to find an 
earlier stage, and to do so I again searched through material 
from different places where it occurs, and in most cases found 
a small globular Batopora, which is what I determined as 
B. stoliczkai, Rss., though what were taken to be appendages 
are probably young zocecia in course of formation and are 
not always found, and then there seems to be no material 
difference from B. rosula, Rss., so that perhaps roswla and 
stoliczkai are synonyms. The possibility of a globular 
Batopora being tlhe first stage was foreseen by Reuss and 
also by me, but at that time was rejected. 
The primary is well within this globular form. I have 
found a very similar pit in Orditulipora lenticularis, Rss., 
from Montecchio Maggiore, but ina very different position— 
namely, near the periphery directed towards the middle of 
the zoarium, avd in Orbitulipora petiolus one has been 
figured by Dixon ¢ and by Gregory { at the side. On p. 92 
it is seen to be continuous from the centre to the circum- 
ference of the zoarium. MacGillivray § and Maplestone || 
speak of there sometimes being more than one pit in S. fossa, 
but I have seen nothing of the kind. Perhaps they had 
found a true Cellepora. Is there any other explanation of 
these pits, except the perforating Actinid? ‘The large 
pores in the pits, with their tube or chamber leading to the 
zocecia (Pl. VI. figs. 3, 4), is undoubtedly a point of much 
importance, and the explanation now offered is that these 
pores indicate the attachment of radicles, which together 
form a solid bundle such as we know in various Bryozoa 4], 
The shape of the oral aperture (0°12 mm.) and of the 
* North Ital. Bryozoa, p. 35, figure in text; Quart. Journ, Geol. Soe. 
vol, xlvii, (1891). 
+ Geol. & Fossils of Tert. & Cret. Form, of Sussex, p, 151, pl. i. fig. 10 
(1850). 
¢ Brit. Pal. Bry. pl. xxxi. figs. 12, 13. 
§ “Tert. Poly. of Vict.,” Trans. R. Soc. Vict. p. 108 (1895). 
_ _ || New or little-known Polyzoa,” Proc. R. 8, Vict. vol. xxv. p. 361 
1913). 
{ Preparations had been made, and the drawings for Plates completed, 
before I had an idea of any theories of Canu and Bassler. In a short 
letter from Canu, he seems to have come to the conclusion that Con- 
escharellina and some other genera lived with the apex of the cone below, 
and were attached, as partly suggested by d’Orbigny. I see that there 
will be points of agreement between us, but I am awaiting their complete 
work, 
‘inn. & Mag. N. Hist. Ser. 9. Vol. iii. 6 
