PLATE X. 

 Cladopora falmata H. (& W. 



Page 231. 

 Fig. 1. This figure represents the form and mode of branching of a specimen of this 

 species. The tinted portion on the right shows the size and distance of 

 the cell-apertures. 



Cladopora prolific a H. cC U'. 



Page 230. 

 Fig. 2. A fragment of a large mass showing the form of the branches and their 

 mode of bifurcation ; the upper left hand branch gives the relative size 

 and distance of the cell-apertures. (The form of the cell in this and the 

 preceding figure is not quite correctly represented in the lithograph.) 



Cladopora magna H. cC W. 



Pa-.'e 2;W. 

 Fig. 3. This figure shows the form, size and mode of coalescing of several branches ; 

 a character which appears common to the lower portion of the mass. 

 " 4. A more robust, detached fragment, showing the size and form of the calyces. 



Aulopora Iowensis H. & W. 



Page 235. 

 Fig. 5. A portion of a large frond of this species, which is attached to the surface 

 of a specimen of Naticopsis gigantea. 



Aulopora saxivadum H. & W. 



Page 2:J5. 

 Fig. 6. A specimen attached to the surface of Atrypa reticularis. 



Stomatofora? alterxata H. & W. 



Page 235. 

 Fig. 7. A group of these bryozoans attached to the surface of Spirifer Uangerfordi. 

 (Natural size.) 

 8. An enlargement of part of one, showing the form of tube and mode of 

 branching. 



Fistulipora occidexs it. <X- II'. 



Page 228. 

 Fig. Jl. View of a branch showing general form and mode of growth, 

 " 10. An eularg-ement of the surface. 



