EEPTOMULTICAYA. 
139 
humped zoaria which resemble his C. phymatodes more than 
Michelin’s type of avellana. The evidence for the inclusion in 
Reptomulticava avellana of the Plauen specimens that have been 
assigned to C. micropora is referred to on p. 160. 
This species is doubtfully represented in the collection by the 
following specimen : — 
D. 7398. A nodular zoariiim, 58mm. in dia. and 35 mm. high. Albian — 
zone of Schloenbachia rostrata. Haldon Hills, south-west of Exeter. 
Vicary Coll. Bequeathed 1903. The zooecia are arranged radially ; 
the structm’e in sections is somewhat like a coral. It is too worn 
for certain determination. The specimen is a siliceous pseudomorph, 
and most of the surface is corroded and covered by beekite ; the 
apertures, as far as visible, resemble those of Ceriopora. The 
zooecia, however, are in long radial series, and there is no clear 
proof of lamellar structure ; there are apparent concentric layers 
like the platfonns of a Tubipora, hut the zooecial walls traverse the 
layers uninterruptedly, so that the specimen may belong to Ceriopora. 
7. Reptomulticava substellata (d’Orbigny), 1850. 
Syivonymy. 
Ceriopora stellata, pars, Goldfuss, 1829. Petref. Germ. p. 85, pi. xxxi. figs, la, b 
{non c). 
Radiopora substellata, pars, d’Orhiguy, 1850. Prod. Pal. vol. ii. p. 176. 
5? 
,, d’Orbigny, 1854. Bry. Cret. p. 993. 
Simonowitsch, 1871. Bry. Ess. Griins. : Yerh. nat. Ver. 
Ceriopora , , 
preuss. Rheinl. vol. xxviii. p. 46, pi. ii. figs. ^a-d. 
von Pv,euss, 1872. Bry. unt. Quad. : Palseontogr. vol. xx. 
pt. i. p. 125, pi. XXX. figs. 9, 10, 11, ?12; pi. xxxi. 
figs. 1-3. 
pjars, von Reuss, 1874. Bry. oh. Plan. : ibid. vol. xx. 
? lleteropora , , 
pt. ii. p. 136. 
Pergens & Meunier, 1887. Bry. gar. Faxe : Ann. Soc. 
Diagnosis. 
malac. Belg. vol. xxi., Mem. p. 224. 
Zoarium very variable. The typical form is massive and 
nodular, with many raised lobes and circular groups of 
Cerioporoid zooecia. In other forms the zoarium begins as 
a simple mamelon, composed of several layers, and growing 
into a cylindrical stem, with crowded, sub - quincuncial 
apertures ; the stem may be laterally constricted, and 
terminate above in lobes which are lamellar and therefore 
Reptomulticavan in structure. 
The apertures are not radial in arrangement. 
