REPORT ON CORALS. 



Genus Cryptohelia, 



Cryptohelia pudica, coenosteum, 



,, „ soft structures, coenosarc, 



„ „ zooids. 



,, ,, gonophores, 



,, „ growth by budding, 



General remarks on the structure of the Sttlasterid^e 

 Parasites of the Sttlasterid^ — Pycnogonids, 

 Distribution in space and time of the Stylasterid^:, 



List of the species of Sttlasterid^; dredged by H.M.S. Challenger, with descriptions of new species 



obtained and hitherto undescribed, 

 Description of Distichopora irregularis, 



,, ,, Stenohelia profunda, 



„ ,, Conqpora tenuis, 

 Note on Cryptohelia pudica, 

 List of all the species of Stylasteridje at present known, with localities and references. 



paou 

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 73 

 7G 

 7G 

 78 

 78 



80 

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Section III. — General Remarks on the Hydrocorallin^e. 



Classification of the Hydrocorallinas, ....... 



Tabular synopsis of the characters of the sub-order HydrocoraUina?, its families and genera, 

 Characters of the sub-order Hydrocorallinse, 



„ ,, family Milleporid2e, 



,, „ „ Sttlasterid^;, 



,, „ genus Sporadopora, 



,, ,, „ Pliobothrus, 



„ Errina 



„ „ ,, Distichopora, 



„ ,, ., Labiopora, 



„ „ „ Spinipora 



„ „ „ Allopora, 



„ „ „ Stylaster, 



,, „ ,, Stenohelia, 



,, ,, „ Oonopora, 



„ „ „ Astylus, 



„ ,, „ Cryptohelia, 



Pedigree of the Hydrocorallinfe, 



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