ART. 21 CYCLOSTOMATOUS BRYOZOA CANU AND BASSLER 11 



BERENICEA GRANDIPORA, new species 



Plate 28, figs. 2, 3 



Description. — The zoariiim encrusts sponges. The tubes are 

 arranged in fan-shape around the ancestrula and form an irregularly 

 discoid colony; they are visible, convex, separated by a furrow, some- 

 what wrinkled transversely, and often swollen in their median part. 

 The peristome is orbicular, thin, little salient. 



Measurements. — Diameter of orifice, 0.12-0.15 mm.; diameter of 

 peristome, 0.24 mm.; diameter of tubes, 0.32mm.; distance of tubes. 

 0.66 mm.; separation of tubes, 1 mm. 



Affinities. — Gregory, 1899, has figured from the Aptian of the Isle 

 of Wight (pi. 5, fig. 1) under the erroneous name of Berenicea 

 gracilis Milne-Edwards, 1838, a specimen in which the dimensions 

 are very close to our species and which could indeed be the same 

 species. This species has much larger micrometric dimensions than 

 Berenicea gracilis Milne-Edwards, 1838, and Berenicea fahelliformis 

 Koemer, 1839, which Gregory incorrectly identified with B. gracilis 



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



Holotype. ^Cat. No. 69846, U.S.N.M. 



BEREmCEA FARINGDONENSIS, new species 



Plate 29, figs. 5, 6 



Description. — The zoarium encrusts sponges in lamellae with irreg- 

 ular edges. The tubes are indistinct, smooth, somewhat convex. 

 The peristome is thick, salient, perpendicular to the zooecial plane, 

 orbicular. 



Measurements. — Diameter of orifice, 0.15-0.16 mm.; diameter of 

 peristome, 0.20 mm.; distance of peristomes, 0.70-0.80 mm.; separa- 

 tion of peristomes, 0.60-0.64 mm. 



Affinities. — This large species differs from Berenicea grandipora 

 new species in the irregular arrangements of its peristomes and in its 

 indistinct tubes. 



In exterior aspect it resembles Diastopora neocomiensis De Loriol, 

 1863, but differs in its incrusting zoarium and its much larger 

 dimensions. 



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



Holotype.—Csit. No. 69847, U.S.N.M. 



BERENICEA FILIFERA, new species 



Plate 29, figs 3, 4 

 Description. — The zoarium encrusts sponges in thin and irregular 

 lamellae. The tubes are arranged in quincunx, much scattered; 

 they are distinct, separated by a salient thread, concave in the longi- 

 tudinal direction; the frontal is ornamented with small salient in- 

 terrupted, longitudinal threads. The peristome is orbicular, thick, 

 salient, perpendicular to the zooecial plane. 



