74 



THE AXTHOZOA 



forms, but only surrounds individual corallites in simple or branching 

 forms. Sub-Family 1. Astraetnae. A. Simplices. Genera — Trocho- 

 smilia, M. Edw. and H. ; I'lacosmilia, M. Edw. and H., etc. B. Reptantes. 

 Genera — Cylicia, M. Edw. and H. ; Astrangia, M. Edw. and H, C. 

 Gemmantes. Genera — Cladocora, M. Edw. and H. ; Goniocora, M. 

 Edw. and H. (Trias, Lias, and Oolite), etc. D. Caespitosae. Genera 

 — Eusmilia, M. Edw. and H. ; Mussa, Oken. E. Contiuentes. Genera 



Fiti. x.\.\vi. 



1.— Vertical .section through the coruUuiii of CiiryniihyHia Smithii, sliowiii}; the tlicca, 

 septa, jMili, cuhiiiiclla. 



2. — View of . 'Ill individual of the same .sjiecies from above. 



3. — FIiiIhIIkiii iHitnijonirhum, a si)ecimen viewed from the side. 



4. — The same viewed from alwve. 



6. — Enlarged view of an axial calicle, with surrounding calicles, from a bninchlet of 

 JIadrepoiii. The i)erforaU! cliaracter of the theca and coenenchynie is well seen. 



0.— View of a portion of a colony of (JaUirea lajierousiaiut, showing corallites jirojecting 

 from an abundant peritheca. 



— Euphijllia, M. Edw. and H. ; Diploria, M. Edw. and H. ; Afauicina, 

 Ehrb. ; Ma-andrina, Lam. ; Coeloria, M. Edw. and IL ; Hiidnophom, M. 

 Edw. and H. F. Aj,'^lomeratae fissiparante.s. Genera — Facia, Oken; 

 Goniastrcva, M. Edw. and 11. G. A<;i,domoratae gemmantes. Genera — 

 l{eliastr(va, M. Edw. and II. ; Echinopora, Dana ; Galaxea, Oken ; 

 hastririi, M. Edw. and II. (Trias, Cretaceous, Miocene); Miridiua, Ehrb. 

 For a fuller account of the Astraeinae f=ee Duncan (19). Ogilvie (84a) has 

 recently broken up the Astraeinae, sejuiraling the Eusmilinae, M. Edw. 

 and II., from them and placing the Trochosmiliacea, M. Edw. and H., 



