Plate 121. 



Figs. 1-7. Plagioccia divaffans. new siseoies (p. 712). 



1. A zoarlum, X 12, with very thick zone of growth. 



2. Very young zoarium, X 12. 



Yicksburgiiin : Three miles soutlieast of Vosburg, Jasper County, Mississippi. 

 Cat. No. 6.5297, U.S.N.M. 



3. A flabelliforra zoarium, X 12. The zoue of growtli is tliiclv but little expanded. 



4. Portion of figure 3, X 25. 



5. Compound zoarium, X 12, incrusting the radicells of an alga. Many sub-colonies are 



visible. 



6. Portion of the zoarium of figure 5, X 25. Numerous closed zooecia are present. 



7. Zoarium with thick zone of growth, X 25. The peristomes are elliptical and approach 



each other on the zoarial margins. 

 Middle Jacksonian (Castle Hayne limestone) : Wilmington, North Carolina. 

 Cat. No. 65298, U.S.N.M. 

 Fig. S. Diastopora UiMformis, new species (p. 673). 

 The hollow cylindrical zoarium, X 12. 

 Middle Jacksonian : Near Lenuds Ferry, South Carolina. 

 Cat. No. 6.5299, U.S.N.M. 

 Fig. 9. Diastopora striatisemota, new species (p. 674). 

 Zoarium, X 25, a wide expanded frond. 



Upper Jacksonian (Ocala limestone) : Chipola River, east of Marianna, Jackson 

 County, Florida. 



Cat. No. 65300, U.S.N.M. 

 Figs. 10. 11. Berenicea incondUa, new species (p. 672). 



10. The incrusting zoarium, X 12, of wide irregular lobes. 



11. View of same, X 25. The tubes are arranged in quincunx. 



Middle Jacksonian: Kich Hill, 5i miles southeast of Knoxville, Georgia. 

 Cat. No. 6.5301, U.S.N.M. 

 Figs. 12, 13. Diapcroecia jacksonensis, new species (p. 742). 



12. The incrusting zoarium, X 12, composed of claviform branches. 



13. View of tlie same, X 25. 



Lower Jacksonian (Moodys marl) : .Tackson, IVIississippi. 

 Cat. No. 65302, U.S.N.M. 

 122 



