OF NEW SOUTH WALES. 131 



Plate. 11, fig. 1, side view of corallum half size ; fig. 2, compound 

 calice n&t. size ; fig. 3, corallum seen from above half size ; fig. 

 4, section of calice nat. size ; fig. 5, a simple calice nat. size. 



EXPLANATION OF PLATES. 

 Plate 9. 



Fig. 1. Symphyllia hemispherica, corallum much reduced. 



Fig. 2. 0]>e calicinal valley, nat. size. 



Fig. 3. Sid« view of single calice showing epitheca. Taken 



f"om the base. 

 Fig. 4 Side \iew of corallum much reduced. 



Plate 11. 

 Fig. 1. Mussa Uciniata, half natural size. 

 Fig. 2. Calicinal valley natural size. 

 Fig. 3. Corallum ;een from above ; half natural size. 

 Fig. 4. Section of single calice natural size. 

 Fig. 5. Same calictseen from above. 



Fig. 6. Mussa solida side view of corallum, half natural size. 

 Fig. 7. Section of siigle calice. 

 Fig, 8. Corallum seen from above ; half natural size. 



Note. — It is said that a r^f building species of Mussa and probably the 

 last named M. solida, extendsvery far outside the tropics as far indeed as 

 Port Jackson. Specimens ha-e been brought to me, but rather worn and 

 like M. echinata, but I have \ot been able to satisf}'^ myself that they 

 really grew where it was said, ci rocks below tide marks at Bondi. We 

 must remember, however, tha on the west side of the continent reef 

 building forms and reefs as well re found as low nearly Lat. 30° S., only 

 3 degrees N. of Bondi, and that avarm and strong sea currant comes down 

 to us along the coast from the trojcs. 



On some New esratropical Corals. 



By the Rev. J. E. TENISO^WooDS, F.L.S., F.G.S., &c. 



Plates 1 and 13. 



Some short time since, Capt Hutton, Professor of Natural 



science in the University of Ne^ Zealand, and Curator of the 



