EEPTOCAYEA. 
403 
Dmexsioxs. 
Height of zoarium ... 
90 : 
Diameter of branches 
• • • 
5-7 
Diameter of zooecia 
• • • 
• •• 
•3 
Diameter of aperture 
•06--07 
{fide Pergens). 
Distkibutiox. 
Cenomanian ; Vaclies noires and Dives, Calvados. 
LIST OF SPECIMENS. 
60,248. A zoariuni 60mm. high. Cenomanian: Craie chloritee. Vaches 
noires. Tesson Coll. 
■60,249. A zoariuni. Cenomanian. Dives. Tesson Coll. 
DOEBTFIJL GENUS. 
REPTOCAVEA, cPOrbigny, 1854. 
[Bry. Cret. p. 954.] 
Diagxosis. 
C}'clostomata Cancellata (?) with an irregular, encrusting, 
nnilaminar zoariuni. 
Type Species. 
Rtfitocavea rugosa^ d’Orbigny, 1853-4. Neocomian: Switzerland. 
Affixities. 
This genus may be the Berenicea stage of the Petaloporidse, 
representing a simple nnilaminar Atagma without its axial bundle. 
In that case the diagnosis of the Petaloporidse must be modified to 
receive it ; but microscopic study is necessary for the determination 
■of its afiinities. 
rugosa, d’Orbigny, 1853-4. 
Syn. Reptocavea rugosa, d’Orhigny, 1853-4. Bry. Cret. p. 955, pi. 775, 
figs. 16, 17. 
,, ,, Pergens, 1890. Eevision, p. 338. 
•Char. — A large, very irregular, nodular zoarium. Zooecia crowded. Peristomes 
elevated. Macula3 numerous ; ? sometimes petaloporoid in arrangement. 
Distrib. — Neocomian : Sainte-Croix, Switzerland. 
