138 PERCY SLADEN TRUST EXPEDITION 



Fig. 7. Favia ananas (Ell. and Sol). Specimen from Ked Sea, from which poljrps were taken, x 2. 

 Fig. 8. Favia solidior (Ed. and H.). Type of Heliastrcm solidior, Ed. and H., Paris, x 1. 

 Fig. 9. Favia versipora (Lam.). The type of Heliastrcea laperouseana, Ed. and H., Paris, x 1. 



Plate 26. 



Figs. 1 and 2. Favia hombroni (Rouss.). Two specimens from Salomon, x 2. 



Fig. 3. Favia halicora (Ehr.). From Minikoi. Gardiner's var. ohtusa. x 1. 



Fig. 4. Favia acropora (Linn.). Large type from Lidian Ocean of Heliastrcea acropora, Ed. and H., 

 Paris. X 3. 



Figs. 5 — 7. Favia halicora (Ehr.). Three specimens from Salomon, showing extent of variation, from 

 thin- walled polygonal corallites without surrounding grooves to oval or circular thick-walled 

 corallites with distinct furrows, x 1. . 



Plate 27. 



Figs. 1 and 2. Favia hemprichii (Ehr.). Two specimens from Seychelles, x 1. 



Fig. 3. Favia vasta, Klunz. From Egmont, Chagos. Cp. with Klunzinger's figure (PI. iv, iig. 8) of 

 F. vasta var. superficialis. x 1. 



Fig. 4. Favia hemprichii (Ehr.). From Minikoi. GavdmeTS Acanthastrcea MrsutaYax. microstoma, x 1. 



Fig. 5. Favia vasta, Klunz. From Salomon. Cp. with Klunzinger's PL iv, fig. 12. x 1. 



Fig. 6. Id. From Aldabra. Resembles Klunzinger's Goniastrcea halicora var. ohtusa (PI. iv, fig. 2). x 1. 



Plate 28. 



Fig. 1. Favia solidior (Ed. and H.). From Funafuti. Gardiner's Orbicella coronata. x 1. 



Fig. 2. Favia favosa (Ell. and Sol.). From Red Sea. x 1. 



Fig. 3. Goniastrea solida (Ed. and H.). From Hulule. x 3. 



Fig. 4. Id. Specimen from Amirante (16 fms.), from which polyps were taken, x 3. 



Fig. 5. Goniastrea planulata, Ed. and H. From Turadu. Gardiner's Goniastrcea pectinata. x 2. 



Fig. 6. Goniastrea pectinata (Ehr.). From Red Sea, enlarged view of PI. 37, fig. 1. x 2. 



Plate 29. 



Favia abdita (Ell. and Sol.). Specimens showing extent of skeletal variation ; figs. 2 — 4, Gardiner's 

 Prionastrosa fusco-viridis. 



Fig. 1. From Singapore (cp. with PL 35, fig. 2, and Ellis and Solander's PL 50, fig. 2). x 1. 



Fig. 2. Id. From Goidu. x 1. 



Fig. 3. Id. From Minikoi. x 1. 



Fig. 4. Id. From Minikoi. x 1. 



Plate 30. 



Figs. 1 — 3. Favia complanata, Ehr. Three specimens from Red Sea, showing imitation oi Favia abdita 

 in form of growth and mode of skeletal variation. Cp. with PI. 29, fig. 1 — 4. x 1. 



