THE VOYAGE OF H.M.S. CHALLENGEE. 



Genus Sporadqpora, .... 



Sporadqpora dichotoma, structure of the coenosteum, 

 „ ,, soft structures ; ccenosarc, 



„ ,, nematocysts, . 



„ ,, dactylozooids, 



,, ,, zooids, 



„ „ gastrozooids, . 



„ „ gonopliores, 



Genus Pliobothrus, 



Pliobothras symmetricus, coenosteum, . 



,, „ structure of soft parts, 



,, ,, ccenosarc, zooids, 



„ „ gonopliores, . 



Genus Errina, 



Errina lahiata, coenosteum, 



„ „ soft structures, ccenosarc, 



„ „ zooids, dactylozooids, gastrozooids, 



„ „ gonopliores, 



Genus Spinipora, 



Spinipora echinata, coenosteum, 



„ ,, soft structures, ccenosarc, 



,, ,, zooids, 



Genus Stylaster, 



Siylaster deusicauiis, coenosteum, 



„ ,, soft structures, ccenosarc, 



„ „ zooids, 



gonopliores, 



Genus Allqpora, 



Allopora profunda, coenosteum, 



„ ,, soft structures, ccenosarc, 



,, ,, zooids, 



„ ,, gonophores, 



Genus Astylus, .... 

 Astylus subviridis, coenosteum, 



,, „ soft structures, ccenosarc, 



„ „ zooids, 



„ ,, gonophores, 



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