Plate 37. 



Figs. 1,2. Aicliwrlla cnixximiufio. new specits (p. 233). 



1. An entire example of the luernsting zoariuin, X 20. The thick walled zooecia and 



the elliptical avicnlarian opesium are the important si>ecific characters. 



2. A small incrustation, X 20. showing the aneestrula and neighboring zooecia. 

 Middle Jacli.soniau : Near Lenuds Ferry. South Carolina. 



Cat. Xo. 63991, U.S.N.M. 

 Figs. 3-5. AccliiiieUa ftlinniitio Canu and Bassler. 1917 (p. 234 K 



3. The iucrusting zoarium, X 20, illustrating ancestrul.-i anil surrounding zooecia. 



4. Another portion of the same zoaritnn. X 20, showing the specific characters— thin 



zooecial walls and avicularia with round opesia. 



5. Another example, X 20. The three zooecia with thick distal borders are ovicelled. 

 Upper Jacksonian (Ocala limestone) : West bank Sepulga River, Escambia County. 



Alabama. 



Cat. No. G2.oSo, U.S.N.M. 

 Figs. 6-9. T.unuUniii vrrrucnsa, new species (p. 242). 



6. Zoarium, natural size. 



7. Surface of the same specimen, X 20. showing the very thick hydrostatic zooecia. 

 S. Inner side of zoarium. X 20. 



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

 Cat. No. 63992, U.S.N.M. 

 9. Interior of frontal of zooecia, X 20. 



Middle Jacksonian: IS miles west of Wrightsville. Georgia. 

 Cat. No. 6.3993, U.S.N.M. 

 Figs. 10-13. Liiniilarin foiicfitnifa De Gregorio, 1.S94 (ji. 244). 



10. Zoarium, natural size 



11. Surface of the same, X 20, showing the hydrostatic ancestrular zooecia with four 



oiienings, and also the normal zooecia. 



12. 'S'iew, X 20. of the radial ribs of the inner side, pierced by scattered pores. 



13. Photograph of edge of transversely broken zoarium. X 20. The lateral septulae 



are visible. 

 Lower Jacksonian (Moodys marl) : Jackson, Mississippi. 

 Cat. No. 63994. U.S.N.M. 

 Figs. 14-18. Luiuihirui tiihifcrn, new species (p. 245). 



14. Four fragmentary zoaria, natural size. 



1.5. One of these fragments, X 20. The ancestrular zooecia are radicular and the 

 vibracula are large and not in distinct rows. 



16. Another fragment, X 20, showing ordinary zooecia transformed into radicular ones. 



17. A small example. X 20, exhibiting characters of the ordinary zooecia and vibracula. 



15. Inner side of zoarium. X 20, showing the tulie-like zooecia and the absence of a 



covering membrane. 

 Middle Jacksonian: One-half mile south of (Jeorgia Kaolin Company's mine, Twiggs 

 County, Georgia. 



Cat. No. 63995, U,S.N.M. 

 Figs. 19-22. LunuJaria jacksoncnsist, new species (ix 250). 



19. Fragmentary zoaria, natural size. 



20. An entire zoarium, X 20, consisting mainly of h.vdrostatic zooecia. 



21. Portion of a zoarium. X 20. showing the ordinary and hydrostatic zooecia and the 



vibracula. 



22. Inner side of zoarium, X 20. exhibiting the radial tubero.se ribs. 

 Lower Jacksonian ( Jloodys marl): Jackson, Jlississippi. 



Cat. No. G3990. U.S.N.M. 

 38 



