170 REPORT— 1883. 
genus of Radiopora, but includes species in the genus Lichenopora: (I1.) 
*‘ Colony simple, or composed of many confluent disks.’ Certainly L. his- 
pida, Flem., var. meandrina, Peach, bears a close resemblance to one of the 
Lower Greensand species, but in the absence of the peculiar markings about 
the orifice of the zocecia in the fossil species I prefer to accept the 
authority of Busk rather than displace the species from the genus Radio- 
pora, for the present at least. 
RapDIopora pustuLosa, D’Orb. ‘ Pal. France.’ 
?=R. bulbosa, D’Orb. 
The Lower Greensand specimen is very large, frequently containing 
from twenty to thirty layers, and-each layer composed of a number of disks, 
and the peguliar radial character of each disk may be examined if a group 
of them are slightly rubbed. It appears to me, however, that one specific 
name will indicate the superficial character of the Greensand specimens. 
Locality.—Lower Greensand, Farringdon. 
be] ” 
RADIOPORA MILLEPORA, D’Orb. ‘ Pal. France.’ p. 992. 
? BR. heteropora, D’Orb. 
This species is very different from the above, both in the character of 
the zoaria and in their general arrangement; but in the absence of 
sections showing the structure of the cells the superficial characters are 
comparatively useless in recent classifications. 
Locality.—Lower Greensand, Farringdon. 
RADIOPORA DIADEMA, Goldfass. 
Ceriopora id. Goldfuss, ‘ Petrif. Germ.’ p. 39, tab. 11, fig. 12, 2. 
Defrancia id. »  Hagenow. 
#Y I have specimens of this beautiful species from the Chalk (Fresh- 
water Bay). The zoariwm is delicate and star-like, but I am unable to say 
anything about the structure of the cells. I merely refer toits existence 
as a British fossil in the hope that Paleontologists living in the Isle of 
Wight may have their attention directed to this as well as other species 
of Polyzoa. 
Genus Domopora, D’Orb. 
‘Zoarium massive, cylindrical or mammiform, simple or lobed, 
formed of a number of sub-colonies superimposed one upon the other, 
the whole surface porous. Zowcia disposed in radiating lines, consisting 
of one or more series, on the free extremity of the stem or lobes.’ 
Hincks, ‘ Brit. Mar. Polyzoa,’ p. 481. 
In this genus Mr. Hincks includes Defrancia (pars), Ceriopora 
(pars), Goldf., and Stellipora (pars), Hagenow, and the first species 
described, in ‘Brit. Mar. Polyzoa,’ is the beautiful Cretaceous fossil, 
D. stellata = Ceriopora id., Goldfuss. The one described is a recent 
species, nevertheless Mr. Hincks refers it to Goldfuss’s type. I have 
never met with it asa British Cretaceous species. 
The geographical distribution and range in time are given by Mr. 
Hincks thus: ‘Norway, from Bergen to Bejan, 40-60 fath. (Sars). In 
stratis arenoso-margaceis Westphalic, Goldf.; Austro-Hungarian Miocene, 
Manzoni; Vienna Basin, Reuss.’ a 
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