542 REPORT—1885. 
Membranipora perfragilis, Macgil. = Biflustra, id., ‘ Nat. Hist. of 
Victoria,’ Decade VI. p. 27. Figure of Avicu- 
laria, and description given by Hincks, ‘ Annals,’ 
October 1884, pl. vu. fig. 4. Joc.: Victoria, 
Australia. 2 
In the description of New Polyzoa collected by J. Y. Johnson, of — 
Madeira, in the years 1859 and 1860, as Mr. George Busk gave the first _ 
list of Membranipora in the ‘Quart. Jour. Mic. Soc.’ 1858, 1860, 1861, — 
it would be indiscreet on my part not to give it, together with the original 
references. 
Membranipora tuberculata, Bosc., pl. xviii. fig. 4, formerly confounded 
with M. membranacea (see ante, 41). 
trichophora, Busk, pl. xviii. fig. 2. 
antiqua, Busk, pl. xx. figs. 1, 2 (No. 44). 
Rosselii, Aud. (see No. 23). 
Lacroixii, Aud. (see No. 1). 
lineata, Linn. (see No. 10). 
“ calpensis. 
For details of Recent Scandinavian Membranipora and Synonyms, 
see ‘ Fifth Report on Fossil Polyzoa,’ Brit. Assoc. 1884, where I have 
given a full list of Smitt’s identifications. Part I. Historical Labours, 
p. 58 of Report. No. 19 to No. 28. 
Genus 37 (?). Megapora, Hincks. 
‘Ann. Mag. Nat. Hist.’ 1877; ‘ Brit. Mar. Polyzoa,’ p. 171. 
‘Zoarium encrusting. Zocecia, with a depressed area in front, sur- 
rounded by a raised margin, and partially closed in by a calcareous 
lamina; aperture trifoliate, the lower portion filled in by a horny plate 
on which the opercular valve works. —Brit. Mar. Pol. p. 171. 
Megapora ringens, Busk, ‘ Brit. Mar. Pol.’ p. 172, pl. xxii. fig. 1 
= Lepralia ringens, Busk, ‘Quart. Jour. Mic. Soc.’ 
1856, p. 308, pt. 308, pl. ix. figs. 3-5; Norman, — 
Shetland Polyzoa, ‘ Brit. Assoc. Rep.’ 1868, p. 307. 
This is a deep-water form, and the localities and geographical dis- 
tribution very limited. lLoc.: Shetland, 80-170 fathoms ; Bergen. 
Membraniporide, Hincks. 
Genus Siphonoporella, Hincks. 
‘Ann. Mag. Nat. Hist.’ Contributions, July 1880. 
‘Zocecia with raised margins, front depressed, in part membrana- 
ceous, a small caleareous tube with wide mouth placed at one side of 
the lamina, below the aperture, and opening into the cavity of the cell. 
Zoarium in only known species encrusting.’— Hincks. 
Siphonella nodosa, Hincks, op. cit. pl. xi. fig. 10. 
Genus Euthyris, Hincks. 
* Ann. Mag. Nat. Hist.’ vol. x. 5th ser. 1882. 
? Tuarropora, Macgil. ‘Trans. Roy. Soc. Victoria,’ Dec. 1881. 
Zoarium corneous, erect and foliaceous. Zocecia with raised margins, 
aperture closed by a membranaceous (or membrano-calcareous) wall ; 
