PLATE m. COMMON CORALS AND CORAL ROCK. 



1, 2, 3, 4. [Akoakoa — the jjeiieral name of coral]. Porites spp. an<l varieties; the species 

 are variable in form and a larjjje number of forms have been enumeratcMl. 5. Coclnstrea tenuis. 

 G. Leptastrea sp. 7. Cyphastrea ocilliiia. 8. Leptastrea iKiiraiienfiis. 9. Lepinstrrn 

 agaassizi. 10, 11. Mo)iti]>ora spp. 12. CnrJaslrra sp. 



