Plate 106. 



Figs. 1. 2. Beicnicca stiiiaia, new species (p. 670). 



1. The irreguhirly orbiculiir zoariuin with crowded peristoiHe.s, X 12. 



2. Portion of tlie simie surface, X 25. 



Midwa.van (Clayton limestone) : Luverne, Crensliaw County, Alal)ama. 

 Cat. No. 6.5419, U.S.N.M. 

 Fig. 3. licrenieca brevi-isiiiia, new species (p. 071). 



The orbicular incrusting zoarium, X 12, with erect short tubes. 

 Midwayan (Clayton limestone) : One mile west of Fort Gaiues, Georgia. 

 Cat. No. 6.5420, U.S.N.M. 

 Figs. 4, 5. Diantnitnni fithaciles, new species (p. 673). 



4, 5. The cylindrical branched, tubular zoarium, X 12. 



Midwayan (Clayton limestone) : Luvcvnc, ("renshaw County, Alabama. 

 Cat. No. C.5421, U.S.N.M. 

 Figs. 6-14. Plaijioecia Johatii, new species (p. 710). 



6. Group of the bilamellar, tlabellate zoaria, natural size. 



7. Curious triangular ovicelled lobe very narrow at the base, X 12. 



8. Zoarium, X 12, illustrating the globular convex ovicell. 



9. Lobe branching in the same plane, X 12. 

 10. Lobe branching laterally, X 12. 



n. Zoarium, X 2.5. 



12. Tangential thin section, X 2.5, showing the minute pores. 

 13, 14. Transverse sections, X 12 . 



Midwayan (Clayton limestone) : Luverne, Crenshaw County, Alabama, and one mile 

 west of Fort Gaines, Georgia. (Fig. 10.) 

 Cat. Nos. 65422, 65423, U.S.N.M. 

 Pigs. 15, 16. Plafiioccia clnvioedes, new species (p. 710). 



The flaltelliform, incrusting zoarium, X 12, and a portion, X 25. 

 Midwayan (Clayton limestone). One mile west of Fort Gaines, Georgia. 

 Cat. No. 6.5424, U.S.N.M. 

 Figs. 17. IS. I'luiiUiccia ■lupcrposita. new species (p. 710). 



17. The incrusting zoarium, X 12, formed of superposed subcolonies. 

 IS. Portion of a, .subcolony, X 25. 



Midwayan : Well at Brundidge, Alabama. 

 Cat. No. 6.5425, U.S.N.M. 



107 



