Plate 9. 
Fig. 1 . Membranipora spiculata, new species, (p. 21.) 
Zooecia of the incrusting type specimen, X 20, showing the curved spicules. 
Miocene: Kuhns, Carteret County, North Carolina. 
Figs. 2-4. Pyripora brevicauda. 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 cryptocyst and the triangular interope- 
sial spaces. 
Miocene (Choptank formation): Pawpaw Point, Maryland. 
Figs. 6, 7. Membranipora fossuli/era Ulrich and Bassler, 1904. (p. 20.) 
6. An irregular specimen X 20 showing 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. Membraniporina vincularina, new species, (p. 26.) 
8. A bilamellar zoarium, X 20, referred to this species. 
Miocene (Yorktown formation): Petersburg, Virginia. 
9. 10. The types of the species, fragments of the free rod-like zoaria, X 20. 
Miocene (Choctawhatchee marl): Jackson Bluff, Ocklocknee River, 25 miles southwest of Talla¬ 
hassee, Florida. 
Fig. 11. Acanthodesia rectangularia, new species, (p. 34.) 
The incrusting type specimen X 20, showing the rectangular zooecia with deep cryptocyst. 
Miocene (Yorktown formation): Petersburg, Virginia. 
Fig. 12. Membranipora tuberimargo, new species, (p. 23.) 
Portion of the type specimen X 20 showing both ancestrula and normal zooecia. The single pair 
of distal tubercles and two pairs of lateral ones are quite visible on some zooecia. 
Miocene (St. Mary’s formation): Cove Point, Maryland. 
Fig. 13. Membranipora speciosa, Gabb and Horn, 1862. (p. 44.) 
The original figure of this undetermined species. 
Miocene? Chiriqui, Central America. 
Fig. 14. Membraniporina baccata, new species, (p. 25.) » 
The incrusting, unilamellar zoarium, X 20, illustrating the numerous granules of the mural rim. 
Miocene (St. Mary’s formation): Bowler’s wharf, 18 miles above Urbana, Middlesex County, 
Virginia. 
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