842 MR. A. W. WATERS ON 
whether the greater projection of the zoccial tubes may not 
depend on local conditions. 
Only few ovicells have been found: one is small at the side 
just above a bifurcation, and has an oceciostome with a narrow 
opening and a somewhat triangular plate in front of it. The 
other ovicells have the occiostomes like those in the first, and 
spread round several zocecia without including any—that is, none 
pass through it. This structure was shown by Smitt (fig. 30). 
Very few ovicells of recent Entalophora have been described. 
Busk says of 2. delicatula B. “ocecium tumid,” but it has never 
been figured. In the ‘Challenger’ Report Busk, on pl. iv. 
fig. 1b, figures an irregular zocecium as an “ ovicell dilation,” but 
from an examination of the specimen I think this is a mistake, 
as there is no sign of more numerous perforations, which 
we seem always to find on the ovicells of these groups of 
Cyclostomata. 
In my collection there are ovicells on 2. regularis MacG. and 
FE. intricaria Busk*, but these and some other species, among 
which what I considered was 2. rugosa VOrb., from Naples, will 
probably have to be removed from Hutalophora, as sections show 
a distinct lamina, and the ovicells are wide with the zocecial 
tubes passing through, reminding us of the ovicells of Diastopora, 
with which they are closely allied, but whether they must be 
ealled Diastopora or Bidiastopora need not now be considered. 
Among fossils also, no doubt many must be removed from 
Entalophora to Diastoporide. D’Orbigny and others have also 
placed under Hntalophora many species now remoyed to 
Meliceritites. . 
The ovicells of fossil Hntalophera (Spiropora) annulosa Mich. 
are figured by Canu‘, and are fairly similar to the ovicells of the 
present species. Canu does not figure the zocecia spiral or 
regular, therefore why does he call it Sprropora ? 
Loc. Flovida (Smitt). Wasin, Brit. E. Africa, 10 fath. (501) 
(507); Ras Osowamembe, Zanzibar Channel, 10 fath. (504): 
collected by Crossland. 
FrnispARSA TUBULOSA (Busk). 
Hornera violacea var. tubulosa Busk, Cat. Mar. Poly. pt. iii. 
p- 19, pl. xviii. fig. 4: for synonyms see Waters, “ Austral. Bry.”, 
Ann. Mag. Nat. Hist. ser. 5, vol. xx. p. 257 (1887); and “ Rep. 
Mar. Biol. of Sudanese Red Sea, Bryozoa,” Journ. Linn. Soe., Zool. 
vol. xxxi. p. 235, pl. xxv. figs. 16, 17 (1910); and add: Seguenza, 
Form. Terz. pp. 297, 372 (1879); De Stefani, “ Jejo Montalto e 
* E. intricaria Busk has the rays or spines on the outside of the zoccial tubes 
which pass through the ovicells. The lamina is not seen in all stages, and in the 
section which I figured, Q. Journ. Geol. Soc. vol. xliii., pl. xviii. fig. 5, none is seen 
though in other pieces it is quite distinct. j 
+“ Btudes sur les ovicells des Brvoz. du Bathonien d’Occaignes,” Bull. de la Soc. 
Géol. de France, 3™¢ sér. vol. xxvi. p. 282, figs. 19, 20 (1898). 
