
ORDER I CYCLOSTOMATA 265 
Discoporella, Gray), (Figs. 480, 431). Like Apsendesia, except that interstitial cells occur 

Fic, 427. 
Fic. 426, Discocytis diadema, Goldf. sp. 
Upper Cretaceous; Maestricht. 
Discocytis endesii, AOrb. Upper Cretaceous; France. Specimen 3/4 A, Zoarium, 1/}. B, Profile of 
natural size, and three views of same enlarged (after d’Orbigny). same. C, Upper surface, enlarged. 
between the elevated rows of zocecial apertures, on a depressed space at the centre of 
each disk, and often also on the under surface of the zoarium. Jura to Recent. 

Fic. 428. 
Fia. 429. 
Apsendesia Gaudryana, a’Orb. 
Upper Cretaceous; France. Apsendesia (Buskia) tabulifera, Roemer sp. Astrupp, Westphalia. 4, 
Upper surface, 8/). Zoarium, 1/;. B, Cluster of zocecial apertures, enlarged. 
Stellocuvea, VOrb. Zoaria discoidal, the upper surface exhibiting the salient edges of 
ayesyee, 
antinds  foaey, 
Et e's coe us 
cee, 
- 
« 

Fic. 430. 
Lichenopora (Radiopora) stellata, Goldf. sp. Planer; Plauen, Saxony 
Lichenopora pocillum, a Orb. Cre- A, Zoarium, 1/;. B, Same, enlarged. (C, Vertical section of specimen from 
taceous; France(after d’Orbigny). Greensand of Essen. 
numerous radially arranged plates, few of them reaching the centre. Zocecial tubes 
