104 Moll 
MOLLQSCOIDEA. 
of long, slender, tubular fibres emitted from the dorsal surface of the 
zooecia, and serving for attachment, all from Bass’s Straits ; Hincks, Z. c. 
pp. 3-6, pi. i. figs. 1 & 2, pi. ii. fig. 6, pi. hi. fig. 3, pi. iv. figs. 4 & 5. 
Memhranipora rohorata, sp. n., with Flustrine habit and marginal rib, 
like Flustramorpha ; id. Z. c. p. 128, pi. ii. fig. 3, Bass’s Straits. 
Membranipora echinata (Orb.) and monostachys (Busk) described, the 
former extending from Chili to Sitka, the latter found at Panama and 
on the coast of Portugal ; Jullien, Bull. Soc. Z. Pr. 1881, pp. 165 & 168. 
Chaperia australis^ new name for {Membranipora) spinosa (Quoy, Busk, 
nee Orbigny), Cape of Good Hope, on the shells of Bivalves ; id. 1. c. 
p. 163. 
Diplopora^ g. n. Zooecium divided into two parts, a narrow trans- 
verse portion of the front cell wall entirely membranous; D. cincta 
(Hutton, Membranipora^ 1878), Australia. MacGillivray, Tr. B. Soc. Viet, 
xvii. p. 15, pi. figs. 1-lc. T. Hincks gives a new account of the generic 
characters, adding that the cells of the first transverse row of the colony 
are elongated, entirely closed and destitute of orifice, and that his own 
Membranipora transversa (1880) is the same species; Ann. N. H. (5) vii. 
pp. 154 & 155. 
Microporidjj. 
Vincularia abyssicola (Smitt), Hincks, Ann. N. H. (5) vii. p. 155, pi. x. 
fig. 4, Cuba, 450 fath., Florida and ? Singapore. 
CRIBRILINIDiE. 
Cribrilina ferox (MacG.), monoceros (MacG.) ?, tubidifera^ and speciosa, 
spp. nn., Bass’s Straits, the first with tubular processes for attachment ; 
Hincks, op. cit. viii. pp. 7-9, the last three pi. i. figs. 7 & 8, and pi. hi. 
fig. 6. 
Gigantopora, g. n. Growth encrusting ; zooecia salient, ventricose, 
minutely roughened and punctured ; above the true mouth, which is ter- 
minal, not horizontal, is an enlarged tubular prolongation of the peristome 
directed upwards and outwards, terminated by a secondary aperture ; on 
the front face of zooecium proper, a large roundish special pore, at least half 
as broad transversely as the cell itself. G. lyncoides, sp. n., Victoria Bank, 
S. Brazil, 33 fath. Hippothoa fenestrata (Smitt) also belongs to this 
genus. Bidley, P. Z. S. 1881, p. 47, pi. vi. fig. 3. 
MiCROPORELLIDiE. 
Microporella mucronata (MacG., Eschara) = EscJiara lichenoides (Busk, 
nec M. Edw.) ; Hincks, Ann. N. H.. (5) viii. p. 10, Bass’s Straits. 
Ilaploporella^ g. n. Zooecia destitute of a membranous area or aper- 
ture and of raised margins ; orifice arched above, with the lower lip 
entire ; no special pores. H. nodulifera and lepida^ spp. nn., Bass’s Straits, 
id. Z. c. p. 11, pi. i. fig. 4, and pi. ii. fig. 2. 
