Plate 24. 

 Figs. 1, 2. Adeona hedell Reuss, 1847. (p. 158.1 



1. Surface of zoarium, X 20, showing coTivex, young zooecia. 



2. Tlie normal aspect of the zoarium, X 20, in which the zooecia are flat. 

 Miocene (Duplin marl): Wilmington, North Carolina. 



Figs. 3, 4. Trenvyasterina horridn, new species, (p. Jfi8.) 



3. The free, bilameliar zoarium, natural size. 



4. Zooecial surface, X 20, illustrating the large median orbicular pore surrounded by a line of 

 areolar pores, and the immense triangular avicularium. 



Miocene (Choctawhatchee marll: .Tackson Bluff, Ocklocknoe River, 25 miles southwest of Talla- 

 hassee, Florida. 

 Figs. 5-S. Adeonellopsis mccinella^ new species, (p. IGl.) 



5. Fragments of the bilameliar zoarium, natural size. 



fi. Surface of the liilamellar zoarium, X 20. with poorly oriented zooecia. 



7. Another surface, X 20, with more regularly arranged zooecia and showing the frontal perfor- 

 ated by stellate pores. 



8. Interior of zooecia, X 20, illustrating the frontal perforations. 



Lower Miocene (Chipola marl); Chipola River, Calhoun County, Florida. 

 Fig. n. Liigt'iiiporai'!) hrevicolUs, new species, (p. 171.) 



Zooecia of the incrusting zoarium, X 20, illustrating the form of the apertura, the tremopores, 

 and the occasional small avicularia. 



Miocene i Duplin marl): Kuhns, ('arteret County. North Carolina. 

 Figs. 10-13. Iloloporelln panula, new species, (p. 175.) 



10. The free irregularly Ijranched zoarium. natural size. 



11. Surface, X 20, illustrating the very small, cumulate zooecia. 



12. Another portion of the type, X 20, showing the small umbo before the apertura more clearly. 



13. Zooecia, X 20, with areolar pores distinctly visible. 



Miocene (Duplin marl): Cape Fear River. 28 miles northwest of Wilmington, North Carolina. 

 Fig. 14. Ifohporella rostrifera, new species, (p. 175.) 



The incrusting zoarium, X 20, exhiliiting the erect, indistinct zooecia with the four .salient rostra 

 about the apertura. 



Miocene ( Yorktown formation): York River, Virginia. 

 Fig. 15. Aelea anguina (?) Linnaeus, 1758. (p. 49.) 



The incrusting network, X 20, referred doubtfidly to this recent species. 



Pliocene ( Waccamaw marli: Waccamaw River, Horry County, South Carolina. 



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