844 MR. A. W. WATERS ON 
Padova, vol. vi. p. 12 (1844). For synonyms see Miss Jelly’s 
Catalogue and add :— 
Filisparsa irregularis Waters, ‘“Ovicells of Cyclost. Bry.,” Journ. 
Linn. Soc., Zool. vol. xx. p. 279, pl). xiv. figs. 5, 6 (1888); Norman, 
“ Poly. of Madeira,” Journ. Linn. Soc., Zool. vol. xxx. p. 279, 
pl. xxxiv. figs. 1-3 (1909). 
Tervia folini Calvet, “ Rech. de la Camp. du ‘ Caudan,’” Ann. 
de l’Univ. de Lyon, p. 265, pl. vil. figs. 1-3 (1896). 
Tervia irregularis, Jull. & Calv. “ Bry. de VHirondelle,” p. 114, 
& p. 157, pl. xiv. fig. 7 (1903). 
The proximal part of the zoarium has the zoecia irregularly 
placed as in Filisparsa; then later, usually after the first 
branching, there are distinct series on each side, often with isolated 
zocecia in the median line. The very earliest part, namely the 
primary, is like that of Stomatopora, being about the same size as 
ordinary zocciaand but very slightly expanded at the proximal 
end, whereas in Jxubulipora and many other Cyclostomata there 
is a large disk. This disk I have figured mm 7’ubelipora pulchra, 
and it has also been figured by Barrois, Robertson and others. 
Inside the zocecial tube, about the position where it becomes 
erect, there is on the proximal side a shallow comb-like process 
(Pl. IV. fig. 8). This is where the closure takes place. There 
are combs in some Membraniporide, and spimous processes in 
many Cyclostomata, but I have not found a similar comb in any 
other Cyclostomata and it does not oceur in Filisparsa tubulosa. 
Loc. Adriatic; Naples, 40 fath. ; Genoa: Bay of Biscay :* Azores, 
450 fath. (J. & C.); Madeira (V.); off Cape Blanco, West Africa, 
235 met. (J. & C.); Australia, Wasin, Brit. E. Africa, 10 fath. 
(507), collected by Crossland. 
TDMONEA MILNEANA d Orbigny. 
For synonyms and localities, see Waters, “Bry. from near Cape 
Horn,” Journ. Linn. Soe., Zool. vol. xxix. p. 249 (1904). 
From Ras Osowamembe, Zanzibar Channel, 10 fath. (504), 
collected by Crossland. 
IDMONEA RADIANS (Lamarck). (PI. IT. figs. 6, 7, 8, 10.) 
For synonyms see Miss Jelly’s Catalogue and add :— 
Dollman, W. P., Journ. Roy. Micr. Soc. pl. viii. 1906, photo- 
graph only; Philipps, E. G., “ Polyzoa collected by Dr. Willey,” 
Willey’s Zool. Results, pt. iv. p. 449 (1899); MacGillivray, 
‘“Monog. of the Tert. Polyzoa of Victoria,” Trans, Roy. Soe. Vict. 
vol. iv. p. 121, pl. xvi. fig. 18 (1895). 
Besides the more usual form with short branches (fig. 8a) there 
are from both localities specimens with long ones (fig. 8) having 
similar subparallel branches. MacGillivray has referred to a 
larger form, and Busk called it var. erecta. In the smaller 
