182 MADREPORARIA 



G. Calicles greatly reduced in size, with septa reduced in number, sometimes apparently- 

 only 12, and thus simulating the calicles of Porites, but, inasmuch as the septa fuse irregularly 

 near the walls, they do not show the septal formula typical of that genus. 



G. Sind 6. ? With sharp-edged walls. 



G. Vicenza 3. Or perhaps A (c). 



G. Turin 2. 



G. Turin 3. 



G. Genoa 3. Or perhaps A (c). 



G. Vienna Basin 4. 



G. Oberburg 1. Or A (c). 



G. Box 4. 



G. Gironde 1. 



G. Paris Basin 11. Also under F. 



G. Paris Basin 12. Also under F. 



G. France a. 



H. Calicles with walls and septa melted down to a reticulum composed of lamellae or 

 filaments, though not on the top surfaces of the expanding sheaf formation (cf. D). 

 G. Singapore 2. In the uppermost calicles. 

 G. Vicenza 5. 

 G. Vicenza 13. 



G. Paris Basin 9. Radial symmetry traceable. 

 *G. Paris Basin 10. 

 G. Coutances 2. 

 Goniopora xb. 



I add supplementary divisions to show the distributions of the forms with very large and 

 with very small calicles. 



J. Calicles over 4 mm. 



G. Solomon Islands 3. 4-5 mm. Recent. 



G. North- West Australia 2 \ 



G. North- West Australia 3 > 5 mm. Recent. 



G. North- West Australia 4 ) 



G. Philippines 1. 4-5 mm. Recent. 



G. China Sea 5. 3-6 mm. Recent. 



G. Java Sea 2. 4-5 mm. Upper Miocene. 



G. Ceylon 1. 4-5 mm. Recent. 



G. Maldives 4- 6-7 mm. Recent. 



G. Sind 1. Up to 6 mm. Upper Cretaceous or Eocene. 



G. Sind 2. Up to 12 • 5 mm. Lower Eocene. 



G. India a. 4r-5 mm. Eocene. 



* G. Paris Basin 5 and 6 are melted down into a reticulum, but on a different principle, namely, 

 by the proliferations of the septal synapticular outgrowths. 



