PLATE XXVII. 
Retepora. 
PAGE 
Figure 1 . — Retepora lata , . . . . „ . ,115 
la, magnified. 
,, 2 . — Retepora margaritacea, . . . . . .125 
2a, 2b, showing the two kinds of avicularia. 
„ 3 . — Retepora crassa (PL XXVI. fig. 10), . . . . 115 
3b, magnified. 
,, 4 . — Retepora jacksoniensis, ...... 125 
4 a, magnified ; 4 b, rostral avicularinm. 
,, 5 . — Retepora philippinensis, . . . . . .123 
5a, magnified ; ooecia shown below. 
,, 6 . — Retepjora tessellata, var. ccespitosa, . . . . .113 
6a, magnified ; 6b, zooecia, more highly magnified. 
,, 7. — Retepora victoriensis, . . . . . .117 
7a, magnified; 76, more highly magnified ; 7c, various avicularia ; 
7d, ooecia. 
,, 8. — Retepora tessellata, . . . . . . .112 
86, magnified ; 8c, ooeeium ; 8 d, oral spines of the younger zooecia ; 
8e, dorsal surface ; 8 f rostriform avicularium. 
