PLATE XXVII. 



AULACOPHYLLUM PRINCEPS. 



Page 427. 



Fig. 1. View from the posterior side, showing the interior of the calyx and 



lamellae. 

 Fig. 2. Anterior side of the same individual. 



AULACOPHYLLUM REFLEXUM. 

 Page 428. 

 Fig. 3. Lateral view of a specimen. 

 Fig. 4. The calyx of the same enlarged to two diameters. 



AULACOPHYLLUM BILATERALE. 

 Page 429. 

 Fig. 5. Posterior view of the specimen. 



AULACOPHYLLUM PRATERIFORME. 

 Page 427. 

 Fig. 6. Lateral view of an imperfect specimen. 

 Fig. 7. View of the calyx. 



AULACOPHYLLUM PR^ECIPTUM. 

 Page 428. 

 Fig. 8. Lateral view of the coral. 



AULACOPHYLLUM PrNNATUM. 

 Page 427. 

 Fig. 9. Lateral view of an imperfect specimen. 

 Fig. 10. View of a specimen showing the cup. 



AULACOPHYLLUM TRIPINNATUM. 

 Page 429. 

 Fig. 11. View of a specimen imperfect at the base. 

 Fig. 12. Calyx of the same. 



AULACOPHYLLUM POCULUM. 

 Page 429. 

 Fig. 13. Lateral view of the upper portion of a specimen. 

 Fig. 14. View of the calyx of the preceding. 

 Fig. 15. The calyx of another specimen. 



