236 
KADIOPORIDiE. 
Figures. 
PL I. Fig. 8a. A zoarium with a well-developed thin selvage ; 
X 10 dia. Fig. Sh, the same zoarium from the side ; nat. size. 
Middle Chalk — zone of Jficraster cortestndinarium : Chatham. 
Vine Coll. D. 2757. 
PI. I. Fig. 9a. A thick zoarium without the thin selvage, 
attached to a fragment of Micraster sp. ; X 7 dia. Fig. 9b, the 
same zoarium from the side ; nat. size. Chalk : Loc. ? (south-east 
of England). Morris Coll. 50,468. 
Affinities. 
This species, as pointed out by Marsson, was wrongly numbered 
on von Hagenow’s plate. The latter’s description, with its emphasis 
on the uniserial lines of round apertures, makes it obvious that 
Befrancia reticulata is the fossil shown on pi. iv. fig. 3, and not fig. 4 
as printed. Owing to the confusion thus introduced, it is better 
to adopt d’Orbigny’s name, which was published the same year. 
This course is all the more advisable as von Hagenow’s D. reticulata 
was a very worn and imperfect specimen. 
Paricavea appears to be a zoarium which has grown round 
a cylindrical stem. M. Pergens remarked on the resemblance 
between d’Orbigny’s type of P. ‘perforata and B. irregularis, hut 
kept them distinct, as the diameter of the apertures in the former 
is ‘04 mm. and in the latter *06 mm. 
LIST OF SPECIMENS. - 
British. 
D. 2757. A zoarium with broad, well-preserved selvage (ou slide). Middle 
Chalk — zone of Micraster cortestndinarium. Chatham. Vine 
Coll. Figd. PI. I. Figs. 8a, h. 
50,468. A thick zoarium, with belt of crowded lateral zooecia growing on 
a fragment of Micraster sp. Chalk. Loc. (? south - east of 
England). Morris Coll. Figd. PL I. Figs. ^a,h. 
B. 805. A zoarium with Proboscina anomala, Reuss, on Echinocorys scutatus, 
Leske. Upper Chalk. Broadstairs. Presented by Mrs. Burnett. 
D. 2755. A small isolated zoarium (on slide, with Eorosphcera sp.). Middle 
Chalk — zone of Micraster cortestndinarium. Chatham. Vine Coll. 
D. 3008. An irregular zoarium attached to fragment of Echinocorys scutatus, 
Leske (on slide). Upper Chalk. Bromley. J. Simmons Coll. 
D. 4230. A zoarium on echinoid plate. Middle Chalk — zone of Micraster 
cortestndinarium. Chatham. Gamble Coll. 
D. 4325. A zoarium on a Brachiopod. Upper Chalk — zone of Belemnitella 
mncronata. Clarendon, near Salisbury, Wilts. Gamble Coll. 
