PLATE VI. 
Figs. 1, la. SEPTOPORA CREBRIPORA n. sp p. 128 
1. The type zoarium, reverse face, abraded in several places so that 
the arrangement of the zooecia is displayed, la. A portion 
of the same, x4. Hale formation, Station 136. 
Figs. 2, 2a. SEPTOPORA REVERSISPINA n. sp p. 128 
2. The type zoarium, reverse face exposed. 2a. A portion of the 
same, ground and polished to give a tangential section near the 
obverse face, showing the zooecial arrangement, x4. BrenL 
wood limestone. Station 145. 
Figs. 3, 3a. POLYPORA HALENSIS n. sp p. 121 
3. A portion of the zoarium selected as the holotype. 3a. Another 
portion of the same, ground and polished to give a tangential 
section near the obverse face, showing the arrangement of 
zooecia, x4. Hale formation. Station 136. 
Figs. 4, 4a. POLYPORA ANASTOMOSA n. sp p. 125 
4. The type zoarium, reverse face exposed. 4a. A portion of the 
same, ground and polished to give a tangential section near the 
obverse face, showing the zooecial arrangement, x4. Hale for- 
mation, Station 136. 
Figs. 5, 5a. PHYLLOPORA CRIBROSA n. sp p. 127 
5. The type specimen, a zoarium displaying the reverse face. 5a. 
The obverse face of the same, exposed by grinding away the 
matrix; a polished surface which shows the zooecial apertures, 
x4. Morrow formation, Station 296. 
Figs. 6, 7. RHOMBOPORA SNIDERI n. sp p. 134 
6. 7. Two of the cotypes, x4. Morrow formation, Station 301. 
Figs. 8, 9. RHOMBOPORA LEPIDODENDROIDES Meek p. 132 
8, 9. Two fragmentary zoaria, x4. Morrow formation. Station 301. 
Fig. 10. RHOMBOPORA ATTENUATA Ulrich p. 135 
10. A typical zoarium, x4. Morrow formation. Station 301. 
Fig. 11. RHOMBOPORA TABULATA Ulrich p. 133 
11. A typical zoarium, x4. Morrow formation. Station 301. 
Fig. 12. SEPTOPORA IMPLEXA n. sp p. 129 
12. The type zoarium; the abraded reverse face exposed. Brentwood 
limestone. Station 134. 
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