PLATE V. 
Figs. 1, la. POLYPORA MAGNA n. sp p. 122 
1. The type zoarium, reverse face exposed, la. A portion of the 
same, ground and polished to give a tangential section near the 
obverse face, showing zooecial arrangement, x4. Brentwood 
limestone. Station 145. 
Figs. 2-3. POLYPORA TRISERIATA n. sp p. 116 
2. The type zoarium, obverse face exposed. 2a, A portion of the 
same, enlarged four diameters. Brentwood limestone, Station 
135. 
3. Another zoarium, reverse face exposed. Brentwood limestone. 
Station 150. 
Figs. 4, 4a. POLYPORA REVERSISPINA n. sp ..p. 124 
4. A portion of the type zoarium, reverse face exposed. 4a. An- 
other portion of the same, ground and polished to give a tangen- 
tial section near the obverse face, showing zooecial arrangement, 
x4. Hale formation. Station 136. 
Figs. 5, 5a. PHYLLOPORA PERFORATA n. sp p. 126 
5. The holotype, a zoarium with the obverse face exposed. 5a. A j 
portion of the same, x4. Hale formation. Station 136. ' 
Figs. 6, 6a. POLYPORA KESSLERENSIS n. sp p. 123 ' 
6. The type zoarium, obverse face exposed. 6a. The same, x4. 
Kessler limestone, Station 209. 
260 
i 
