Plate 9. 



Fig. 1 . MemhranipoTa spiculata. new sjiecics. (p. 21.) 



Zooecia of the incrvi.sting typa specimen, X 20, showing the curved spicules. 



Miocene: Kuhns, Carteret County, North Carolina. 

 Figs. 2-4. Pyripora brevicaiula. new species, (p. 19.) 



2. Portion of the zoarium X 20, showing several of the fusiform heterozooecia. 



3. Another zoarium X 20, illustrating the flabelliform growth. Normal and deformed zooecia 

 are present. 



4. Zooecia, X 20. with several calcified ones present. 

 Miocene: Kuhns, Carteret County. North Carolina. 



Fig. 5. Conopeum nitidulum Ulrich and Bassler, 1904. (p. 27.) 



View of the type specimen X 20 illustrating the small flat crjqjtocyst and the triangular interope- 

 sial spaces. 



Miocene (Choptank formation): Pawpaw Point, Maryland. 

 Figs. 0, 7. Membranipora fosstdifera Ulrich and Bassler. 1904. (p. 20.) 



6. An irregular specimen X 20 sho%ring the large interzooecial tubercles, the small spines on the 

 mural rim and some zooecia without tubercles. 



Miocene: Kuhns, Carteret County, North Carolina. 



7. Photograph X 20 of the type specimen. 



The median channel between the walls, giving rise to the specific name, is apparent. 

 Miocene (Calvert formation): Reeds. Maryland, 

 Figs. 8-10. Memhraniporina vincularina. new species, (p. 2().) 



8. A bilaraellar zoarium, X 20, referred to this species, 

 Miocene (Yorktown formation): Petersburg, Virginia, 



9. 10, The tj-pes of the species, fragments of the free rod-like zoaria, X 20, 



Miocene (Choctawhatchee marl): Jackson Bluff, Ocklocknee River, 2-5 miles southwest of Talla- 

 hassee, Florida, 

 Fig, 11, Aranthodesia rectangidaria, new species, (p. 34.) 



The incrusting type s])ecimen X 20, showing the rectangular zooecia with deep crj-ptocyst. 



Miocene (Yorktown formation): Petersburg, Vii'ginia. 

 Fig. 12. Membranipora tuberimargo, new species, (p. 23.) 



Portion of the Uye specimen X 20 showing both anccstrula and normal zooecia. The single pair 

 of distal tubercles and two pairs of lateral ones are quite \'isible on some zooecia. 



Miocene (St. Mary's formation): Cove Point, Maryland. 

 Fig. I'i, ^fembrampora speciosa, Gubh and Horn, ISH2. (p. 44.) 



The original figure of this undetermined species. 



Miocene? Chiriqui, Central America. 

 Fig. 14. Membraniporirui baccata, new species, (p. 25.) 



The incrusting. unilamellar zoarium. X 20, illustrating the numeroiis granules of the mural rim. 



Miocene ^St. Mary's formation): Bowler's wharf, 18 miles above Urbaua, Middlese.x County, 

 Virginia. 



253 



