pet 
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ON RECENT POLYZOA. 565 
These are the British species given by Mr. Hincks. The whole have 
a wide geographical range—and their range in time is also great—but 
principally Tertiary. 
In his paper on the Madeira species, ‘ Ann. Mag. Nat. Hist.’ July 1880, 
Mr. Hincks adds to the list— 
5. Microporella decorata, Reuss (near ally of M. violacea), and suggests 
that the foliowing species should be included in 
the list :— 
Lepralia californica, Busk. 
personata, Busk. 
bicristata, Bush. 
diadema, Maegil. 
ceramia, Macgil. 
6. Microporella ciliata, form vibraculifera, Hincks, Polyzoa Queen 
Charlotte Is. ‘ Annals,’ Jan. 1883, pl. xvii. fig. 2. 
‘f 7 form, umbonata, op. cit. pl. xvii. fig. 1. 
8. ss », californica, op. cit. pl. xvii. fig. 3 
=Lepralia id., Busk, Quart. Jour. Mic. Soc. 1850. p. 310 
a: 5 diadema, Macgil., Polyzoa Bass’s Straits. 
10. A fuegensis, Busk, ‘ Annals,’ May 1884 Tierra del Fuego. 
aT “e mucronata, Macgil., Pol. Bass’s Straits. Very abun- 
dant. This species belongs to the same section of 
the genus as our M. violacea 
= Hschara mucronata, Macgil. 
12, i fissa, Hincks, ‘ Ann. Mag. Nat. Hist.’ Nov. 1880, 5th ser. 
vol. vi. p. 381, pl. xvii. fig. 4. Loc. : Indian Ocean. 
To the description of the above Mr. Hincks adds another brief list of 
Microporelia :— 
18. Microporella coronata, Audowin = Flustra id., Aud. 
Pala. a marsupiata, Busk = Lepralia id., Busk. 
15. 7 stellata, Verrill = Porellina id., Verrill. 
_ In his paper on the Polyzoa of New Zealand and Australia (‘ Annals,’ 
March 1885), Mr. Hincks gives the following :— 
Microporella Malusii, Aud. 
16 5s form disjuncta, Hincks, pl. vii. fig.4. New Zealand. 
y. 3 diadema, Macgil. 
n?. form angustipora, Hincks, pl. viii. fig. 3. 
And to the above the following in all probability may be added :— 
18. Microporella bicristata, Busk = Lepralia id. 
BD, a ceremia, Macgillivray = Lepralia id. 
20. = serrulata, Smitt = Porina id., Smitt. 
el. Fe sub-suleata, Smitt = Porina id., Simitt. 
Family Monoporellide, Hincks. 
Genus Monoporella, Hincks. 
‘Zocecia destitute of a membranous area or aperture, and of raised 
margins; orifice arched above, with the lower lip entire; no special pores.’ 
Hincks, ‘ Annals.’ 
