REPORT ON CORALS. 
Genus Cryptohelia, : : 5 . : : 
Cryptohelia pudica, ecenosteum, ; 5 A é 
¥ a soft structures, ccenosare, . 4 . 
5 5 zooids, 
5 A gonophores, : ; ; ; 
a Bs growth by budding, 
General remarks on the structure of the STYLASTERIDA, 
Parasites of the StyLasterID#a—Pycnogonids, 
Distribution in space and time of the StyLasTERIDA, 
List of the species of Strnastermpm dredged by H.M.S. Challenger, 
obtained and hitherto undescribed, 
Description of Déstichopora irregularis, : : 5 
5 4, Stenohelia profunda, 
” 5, Conopora tenuis, 
Note on Cryptohelia pudica, 
with descriptions of new species 
List of all the species of StYLASTERIDH at present known, with localities and references, 
Section II].—GrNERAL REMARKS ON THE 
Classification of the Hydrocorallinee, 
HyDROCORALLIN 2. 
Tabular synopsis of the characters of the sub-order Hydrocoralline, its families and genera, 
Characters of the sub-order Hydrocoralline, 
5 ,, family MILLEPoRIDs, 
” ” »  STYLASTERIDA, 
" » genus Sporadopora, 
” ” .  Pliobothrus, . : : ; 
” ” »  LLrrina 
” » »  Distichopora, . 
” ” »  Labiopora, 
” ” »  Spinipora 
” + » Allopora, 
» ” »  Stylaster, 
” » »  Stenohelia, 
” ” »,  Conopora, 
” ” ” Astylus, 
” ” »  Cryptohelia, 
Pedigree of the Hydrocoralline, 
