ART. 21 CYCLOSTOMATOUS BRYOZOA CANU AND BASSLER 51 



DIAPEROECIA ORBIFERA, new species 



Plate 8, fig. 17 



Description. — The zoarium is subcirciilar; it incnists shells. The 

 tubes are very short, little distinct, finely granulated, and frequently 

 longitudinally striated; the apertures are elliptical; the peristomes 

 are thin, very close together. The ovicell is large, orbicular, very 

 convex, traversed by the subjacent tubes. 



Measurements. — Diameter of aperture, 0.06 mm.; diameter of peri- 

 stome, 0.10 mm.; distance of peristomes, 0.40 mm.; separation of 

 peristomes, 0.40-0.48 mm. 



Affinities. — This species is very close to Berenicea papillosa Reuss 

 in the closeness of its peristomes. It differs from it in its ovicells, 

 which are orbicular and not elliptical and very elongated. 



Occurrence. — Lower Cretaceous (Aptian) : Faringdon, England. 



Holotype.— Cat. No. 69901, U.S.N.M. 



Fig. 2i.—Fasciculipora flabellata D'Orbigny, 1853. A. Longitudinal thin section, X 16. B. Meridian thin 

 section. X 16, in the vicinity of a bifurcation. C. Zooecial walls, X 35, showing the arrangement of vesicles. 

 Lower Cretaceous (Valangian): S^inte-Crois, Switzerland 



Family FRONDIPORIDAE Busk, 1875 



Genus FASCICULIPORA D'Orbigny, 1846 



FASCICULIPORA FLABELLATA D'Orbigny, 1853 



Plate 7, figs. 1, 2 



1853. Fasciculipora flabellata D'Orbigny, Pal^ontoJogie frangaise, Terrain Cr6- 

 tae6, vol. 5, p. 669, pi. 783, figs. 8-11. 



D'Orbigny has figured only isolated fascicles, but in reality the 

 zoarium is bushy. The fascicles are strongly and largely attached 

 by their base; they are very irregular in form and size. The tubes 

 open at the extremity of the fascicles and often laterally. 



