BRYOZOA FROM ZANZIBAR. 843 
Capo Vat.”, Mem. R. Accad. d. Lincei, vol. xviii. p. 208 (1882), 
Neviani, “ Bri. Neog. delle Calabrie,” Pal. Ital. vol. vi. p. 234 
(1900). 
As Busk made a mistake about numbering his figures, it 
is difficult to understand what he meant, but in spite of this 
it seems advisable to retain his name. Apparently the type 
violacea also should be Filisparsa, and in the Norman collection 
specimens so named, from Flord, have none of the appearance of 
Hornera, but look like Filisparsa, having anterior ovicells which 
are broken down. There is among these specimens one piece of 
Hornera, perhaps lichenoides, evidently misplaced. 
The specimens from Wasin have the oral aperture about 
0-15 mm., corresponding in this respect with specimens from 
Naples and Australia, and here also the closure of the zoccial 
tube has a number of perforations similar in appearance to those 
of the zowcia. There are 14 tentacles. The ovicell spreads 
over the front, and the oceciostome, directed somewhat backwards, 
is about the width of the zoccial aperture, but in the longi- 
tudinal axis is only about 0-°O07mm. There can scarcely be said 
to be a funnel, although there is an irregular expansion which 
frequently curves over. 
The expansion and funnels of the occiostomes of the Cyclosto- 
mata are often very variable, so that too much weight must not 
be attached to their measurements; also some ovicells may be 
found with and others without funnels. 
There are some specimens from Zanzibar, apparently of this 
species, which in younger parts just touch the support at intervals, 
though there are no definite rows of dorsal projections as in 
Tubulipora pulchra MacG.; in the older parts there are strong 
calcareous radicles, sometimes formed of only one tube, but more 
frequently of two or three, which may divide at the end to form 
claspers. Jdmonea pedata Norman has still larger radicles the 
width of the zoarium, often formed by five or six tubes. 
A species from Naples, which I have considered to be the 
Tubulipora incrassata d’Orb. as more fully described and figured 
by Smitt, has zoecia much about the same size, and standing up 
in the same way; but the zoarium spreads out fan-shaped, instead 
of being unattached for a considerable distance, and is continuous 
about the same width. ‘The ovicell is situated as in 7’. tubulosa, 
with the oceciostome about the same size as the zoccial tubes, 
sometimes ending off straight, at other times with a funnel. 
Loc. Naples (W.); Victoria (MacG.); Holborn Island, Queens- 
land, 20 fath.; North Atlantic (4.). Ras Osowamembe, Zanzibar 
Channel, 10 fath. (504), collected by Crossland. 
Fossil. Tertiary : Rhodes, Sicily, ete. 
TERVIA IRREGULARIS (Meneghini). (Pl. IV. fig. 8.) 
Idmonea wregularis Meneghini, “ Polipi della fam. dei Tubul. 
finora osserv. nell’ Adriatico,” Nuovi Sagei del Accad. di Scienze, 
Proc. Zoot. Soc.—1914, No. LVII. o7 
