672 



BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 

 BERENICEA INCONDITA, new species. 



Plate 121, figs. 10, 11. 



Description. The zoarium incrusts bryozoa; it is developed in wide dichoto- 

 mous, irregular lobes. The tubes are distinct, cylindrical, arranged in quincunx, 

 smooth. The peristome is thick, orbicular, or elliptical, little salient. 



Diameter of peristome 0.16 mm. 



Zooecial diameter 0.20 mm. 



Diameter of the orifice 0.08-0.10 mm. 



Distance between the peristomes 0.20-0.50 mm. 



Separation of the peristomes 0.20-0.40 mm. 



This species is possibly a Proboscina. 



Occurrence. Middle Jacksonian: Rich Hill, 5J miles southeast of Knoxville, 

 Crawford County, Georgia (rare). 



e.rt. No. 65301, U.S.N.M. 



Measurements. 



FIG. 217. Forma Diastopora Lamouroux, 1821. 



A. The initial stornatoporoid cell of Diastopora davidsoni Haime, 1S54, showing expansion to 

 berenicoid condition. B. Base of Diastopora davidsoni Haime, 1854, showing basal berenicoid 

 encrustation and erect frond. C. Section through frond of Diastopora lamcllosa cervicornis 

 Michelin, 1846, to show multiple growth. D. Longitudinal section through a frond of Diastopora 

 showing zoarial lamina. E. A Diastopora, giving off shoots in the condition of Entalaphora. F. 

 Transverse section across part of a zoarium of Reptomultisparsa showing concentric layers. 

 (Figs. A-F after Gregory, 1896.) 



