288 Boi/al Socuti/ : — 



These forms are not known in the West-Indian Cainozoic fauna, 

 and they have not been discovered in any Euro^x^an deposits. 



LojyhohcUa ^)ro^iyV ni (var. affinis) is common to the British and 

 Florida deep-sea faunas ; it is found fosjsil in the Sicilian Ter- 

 tiarie*;, being moreover a member of the recent fauna of the Me- 

 diterranean. 



List of species common to tlie area and to the Mediterranean sea. 



1. Car}-ophyllia borealis, Flimhuj. 



2. Amphihelia occulata, Liunav.s, sp. 



3. Loi^hohcliu prolifcra, Pallas, sp. 



List of species found on the area dredged, and as fossils elsewhere. 



1. Caryophyllia borealis, Fhininif, Sicilian : Miocene and 



Pliocene. 



2. Ceratocyathus omatus, Sci^fi'.cnza. Sicilian : Miocene and 



Pliocene. 



3. Flabellum laciniatum, E.L «j- //. Sicilian : Calabrian, Mio- 



cene and Pliocene. 



4. Lophohelia prolifcra, Pallas, sp. Sicilian : Miocene and 



Pliocene. 



5. Amphihelia miocenico, Si'jiunza. Sicilian]: Miocene and 



Pliocene. 



The deep-sea coral-fauna of the area dredged in the ' Porcupine ' 

 and • Lightning ' Expeditious is therefore composed of : — 



5 species which have lasted since the early Cainozoic period. 

 1 Mediterranean species not known in Cainozoic deposits. 

 3 species of the deep-sea fauna of Florida and Havana. 

 3 indigenous species. 



12 



Two of the fossil species are represented in the recent faima of 

 the Mediterranean. 



If the species which I have absorbed into others (in consequence 

 of the light thrown upon the amount of variation in the dcep-fca 

 corals) were counted, the fossil forms would be in all S. 



The greatest depth from which MaJreporana were dredged was 

 705 fathoms, and the lowest temperature of the water in which they 

 lived was 29^-9. 



II. Oil n/oph 1/11 ia borealis, Fleming. — Having collected a very consi- 

 derable scries of the Can/opJiifllicr from the seas around Great Bri- 

 tain, and having been supplied with several specimens of the Medi- 

 terranean species, I had some time ago compared the whole with the 

 fossil forms from the Sicilian tertiary deposits and with each other. 

 The numerous specimens of Can/oj^hi/llio dredged up in Dingle Bay 

 were esi-ocially interesting after I had arrived at satisfactory con- 

 elusions respecting the affinities of the alx>vc-mentioned British and 

 Southern-European forms. The Dingle-Bay collection presented all 



