Plate 5i. 



FuiS. 1—4. JtdiiKiiuhi hill lull liiiiiiirliilii. iii'W Sjiecies (ji. 408). 



1. The iiierustiiig zouriiuii, X 20, with zooec-ia having a iirumincnt iiMirm aiirt irregu- 



lai'ly developed avicularia. 



2. Another zoariimi. X 20. with well developed ovicelled zooeeia. Two spines to a 



zooecium is the rule ou this speciiueu. 



3. Yiew of the interior, X 20. Two large condyles border the aperture laterally. 

 Middle Jacksouian (Castle Hayne limestone) : Wilmington, North 'I':iriilina. 



Cat. No. 6410.5. U.S.N.M. 



4. Portion of a zoarium, X 20, showing the ancestrula and surrounding zooeeia. which 



have in this case four spines, 

 lliddle Jacksouian: Near Lenuds Ferry, .'-'nuth Carolina. 

 Cat. No. 64100, U.S.N.M. 

 Pigs. 5-7. I'cristoiiiclla laliccUa. new species (p. 413). 



5. Ordinary zooeeia of the incrusting zoarium, X 20. 



G. C)vicelled zooeeia, X 20. The areolae and the pleurocyst are well developed. 



7. .\ncestrula and surrounding zooeeia, X 20. The ancestrula is the small zooecium 



near the center of tlie figure. 

 Middle Jacksonian (Castle Hayne limestone) : Wilmington, North C:'rolina. 

 Cat. No. 64107, U.S.N.M. 

 Figs. 8-10. VcrixtuiiirlJa fah-ifcrti. new species (p. 41."p). 



8. A well preserved zoarium of this inerusling siieeies, X 20. with both ordinary and 



ovicelled zooeeia. The long falciform avicularium is quite evide;it. but the areolae 

 are scarcely visible. 



9. Ordinary zooeeia (one ovicelled), X 20, illustrating the bifid muero, the loeella and 



the deeply buried apertura. 

 10. Interior of ovicelled zooeeia, X 20. The loeella appears as a slit between the ovicell 

 and the zooecium. The lateral openings are the falciform avicnlaria. 

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

 Cat. No. 04108, U.S.N.M. 

 Fig. 11. JJiiir.caiiiiKi caUosn. new species (p. 42o). 



The bilamellar type-specimen, X 20. Th? perforated frontal callosity of the ovicell 



is characteristic. 

 Middle Jacksonian : 18 miles west of Wrightsville, Johnson County, Georgia. 

 Cat. No. 64109, U.S.N.M. 

 Figs. 12-17. Hou-cimimi ornata, new species (p. 422 K 



12. Two fragments of the bilamellar zoarium. natural size. 



13. Ordinary zooeeia. X 20. with large areolae and no avicnlaria. 



14. Ordinary zooeeia. X 20. with small areolae and avicnlaria. 

 1.'). Zooeci:\ with ovicells (bioken), X 20. 



16. A zoarium, X 20, with the pleurocyst well developed. 



Middle Jacksonian: Baldock, Barnwell County, South Carolina. 

 Cat. No. 64110. U.S.N.M. 



17. Interior of zooeeia, X 20, showing the thick olneyst with small lateral areoUic and 



the triangular cavity of the avicularium arising from a lateral areola. 

 Middle Jacksonian : Rich Hill, Crawford County, Georgia. 

 Cat. No. 04111, I'.S.N.M. 



55 



