Hvrrox.— Corrections and Additions to the List of Polyzoa. 961 
Idmonea marionensis, Busk, ** Cat. Mar. Pol.," Vol. IIL., p. 18. 
To this species, which was obtained off Marion Island at a depth of 
80 fathoms, Mr. Busk refers Crisina (?) hochstetteriana ; Stoliczka, found 
fossil at Orakei near Auckland. 
Pustulipora delicatula, ** Cat. Mar. Moll.," p. 102. 
This is not the same as Mr. Busk’s species. I am disposed to think 
that it is not a Polyzoan at all, but an Angelid. There is à specimen in the 
Otago Museum from Mauritius. 
Pustulipora parasitica, Busk, loc. cit., p. 91. 
* Zoarium about a quarter inch high, usually formed of one to three 
branches, short and truncate; cells, usually deeply immersed, and very 
slightly prominent, except in very young specimens. Colour, brown, with 
white spots.” 
Always parasitie upon a species of Catenicella. 
Pustulipora proboscidea, ** Cat. Mar. Moll.," p. 102. 
This is not Milne-Edwards’ species. It may be called P. purpurascens. 
P. porcellanica, Hutton. 
The surface of fresh specimens is asa | pitted, and the orifice is 
slightly raised. 
Tubulipora glomerata, Hutton. 
This may perhaps be identical with 7. Chainer Couch, from Europe. 
Tennysonia stellata, ** Cat. Mar. Moll.," p. 108 
The species that I placed under this name is very different from Mr. 
Busk’s, and perhaps does not belong to Tennysonia at all. It is inter- 
mediate between Discoporella and Defranceia. The zoarium is stipitate, 
broadly expanded, lobed, and curled. The cells are disposed in elevated 
branching rays, which form the denticulated margin of the lobe. 
Discoporella hispida, ** Cat. Mar. Moll.," p. 104. 
This is not the hispida of Johnston. Mr. Busk has described it under 
the name of D. ciliata. 
* Discoid; cells uni-serial, 4-6 in each row; diameter of mouth less 
than that of the interstitial cancelli ; peristome, much produced on one side, 
nearly vertical, divided into several (2-4) long, acute, slender spines. 
Discoporella nove-zealandia, Busk, loc. cit., p. 82 
** Diseoid, cupped ; cells, tubular, projecting, connate in uni-serial radii ; 
peristome bifid ; central area (unoccupied by cells) depressed ; cancelli, large, 
becoming smaller towards the periphery." 
On Catenicella, Dr. Lyall. 
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