REPORT ON THE ALCYONARIA. 293 



Family IV. C o R A L L I D iE. 



CoraUium, Lamarck. 



Corallium ruhrum, Lamk., is found in the Mediterranean and extends to the seas 

 about the Cape Verde Islands ; CoraUmm stylasteroides, Ridley, occurs at the Mauritius. 



Pleurocovallium, Gray. 



Pleurocorallium secundtim, Dana, is probably found all over the Pacific, being 

 recorded from Japan, Banda, the Ki Islands, and the Sandwich Islands. It has also 

 been found off Prince Edward Island. Pleurocorallium johnsoni, Gray, occurs off 

 Madeira. 



Order III. ALCYONACEA. 



Family I. Helioporid^. 

 Heliopora, Blainville, emend. Moseley. 



Heliopora ccerulea, Blain., occurs from Singapore to Torres Strait in all suitable 

 localities. 



Family II. N E P H T H Y i D ^. 



Gersemia, Marenzeller. 

 •Duva, Koren and Danielssen. 

 Fulla, Danielssen. 

 Varingia, Danielssen. 



Barathrohius, Danielssen. 

 Gersemiopsis, Danielssen. 

 Drifa, Danielssen. 



The various species of these genera have been found in the North Sea and in the 

 waters of the Arctic Ocean. 



Eunephthya, Verrill. 



Eunephthya lutkeni, V. and M., comes from Greenland ; Eunephthya thyrsoides, V., 

 from the Cape of Good Hope ; Eunephthya nigra (Pourt.), was dredged from a depth of 

 120 to 152 fathoms in the Strait of Florida, while the species found by the Challenger, 

 Eunephthya fusca, was taken at a depth of 150 fathoms off Port Jackson. 



Nephthya, Savigny ; Ammothea, Savigny. 

 The species of these genera seem to be confined to the Red Sea and the Pacific Ocean. 



