PLATE II. 



Fig. i. Plexaura /lava o. sp. Natura] size. i a, part of branch 5. 



Fig. 2. Plexaura platy stoma n. sp. Natura] size. 2a. part of branch 5. 

 Fig. 3. Plexaura recta n. sp. Xatural size. ia, part of branch 5. 



