ORDER I CYCLOSTOMATA 261 
D’Orbigny, Haime, and others restrict Stomatopora to the uniserial forms, and classify 

Fic. 412. 
Fic. 413. 
A, Stomatopora tenuwissima, Ulrich. Utica Group; Cincinnati, O. Stomatopora dichotoma, Lamx. 
Zocecia, 16/;. B, S. inflata, Hall. Loraine Group ; Cincinnati, 6/3. C,S. ‘ sp. Great Oolite; Ranville, 
(Proboscina) frondosa, Nich. Same locality. Portion of large zoarium, Calvados. A, Zoarium, 1/j. 3B, 
12/, (after Ulrich). same, enlarged. 
the multiserial as Proboscina, Andouin. Should the latter genus have to be withdrawn, 
Ulrich would place the multiserial species with Berenicea. 
Berenicea, Lam. (Diastopora, Busk non Lam.), (Fig. 414). Zoaria forming thin, 
discoid, flabellate, or irregular crusts upon foreign bodies. Zocecia arranged in 
irregularly alternating lines. Rare in Ordovician, very abundant in Jura and 
Cretaceous, less frequent in Tertiary and Recent. 
Discosparsa, VOrb. Differs from Berenicea in having obconical or cup-shaped 
zoaria, attached by centre of the base only. Cretaceous. 
Diastopora, Lam. (Mesenteripora, Blv.), (Fig. 415). Like Berenicea, except that the 

Fic, 414. Fia. 415. 
Berenicea diluviana, Lamx. Great Oolite ; Diastopora foliacea, Lamx. sp. Great Oolite ; 
Ranville, Calvados. A, Young expansion, Ranville, Calvados. A, Fragment of zoarium, !/}. 
1/;. B, Same, enlarged (after Haime). B, Enlarged portion of same. 
zoarium rises into broad, simple, or convoluted leaves, composed of two layers of 
zocecia grown back to back. Very abundant in the Jura, less common in Cretaceous 
and Tertiary. 
Bidiastopora, VOrb. Like Diastopora, but the zoaria forming only narrow, parallel- 
edged branches. Cretaceous. 
Diastoporina, Ulrich, Ordovician ; Hederella and Hernodia, Hall, Devonian ; and 
Reptaria, Rolle, Devonian. 
