Corals dredged by H.M.S. ' Challenger. 3 545 



these forty-eight hauls, twenty-five were made in 1873, thirteen in 1874, 

 and ten in 1875. The much larger proportion of coral-yielding hauls 

 obtained in the earlier part of the cruise is no doubt partly due to the 

 fact that the dredge was then most frequently made use of, whereas sub- 

 sequently the trawl has been almost exclusively employed, since it yields 

 so much better general results. The majority of deep-sea corals being 

 simple and imbedded often partly in the mud, are more readily gathered by 

 the dredge. It is remarkable, however, that the trawl does bring up some- 

 times abundantly such small discoid forms as Fungia symmetrica ; and 

 one of the best hauls of corals obtained was made with the trawl. It 

 was that which yielded, on Sept. 26th, 1874, between the Ke Islands and 

 the Banda group, in 129 fathoms, two most beautiful new species of 

 Stephanophyllia, a very large new species of Deltocyathus, a new Platy- 

 trochus, besides several simple Eupsarnmidai and Caryophylliince. The 

 following is a list of the corals obtained from depths of 50 fathoms and 

 upwards, with a statement of all the various localities and depths at 

 which each form has occurred. 



List of Corals dredged in a depth of 50 fathoms and upwards by H.M.S. 

 1 Challenger ,' from December 30th, 1873, to August 31st, 1875, with 

 Depths and Localities for each Species. 



Caryophyllia clavus (Scacchi) = C. borecdis. — 2nd July, 1873: off Fayal, 

 Azores, 50 fathoms. 10th July, 1873 : lat. 37° 24' N., long. 25° 

 13' W., off the Azores, 1000 fathoms. 3rd May, 1873 : lat. 38° 34' K, 

 long. 72° 10' W., 1250 fathoms. 21st May, 1873 : 42° 10' N., long. 

 63° 39' W., 1250 fathoms. 



Caryophyllia formosa (Pourt.).— 18-th Feb., 1873: lat. 25° 45' N., long. 

 20° 12' "W., about 300 miles E. of C. Bodajov, 1530 fathoms. 4th 

 April, 1873 : east of Bermuda, 435 fathoms. 



Caryophyllia (several species). — 25th March, 1873 : off St. Thomas, 

 W. Indies, 390 fathoms. August, 1873 : off St. Iago, Cape-Verd 

 Islands, 100-120 fathoms. 4th March, 1874 ■ off Twofold Bay, N. S. 

 Wales, 120 fathoms. 26th Sept., 1874 ; off the Ke Islands, in 129 

 fathoms. 



Ccenocyathus, sp. — 17th Oct., 1873: off Nightingale Island, Tristan 

 d'Acunha, 100-150 fathoms. 26th Sept., 1874 : off the Ke Islands, 

 126 fathoms. 



Acanthocyathus, sp.— 3rd August, 1874 : off Kadaui, Fiji Islands, 210 

 fathoms. 



Acanthocyathus, c. f.- — 25th Jan., 1875: between Panglao and Siquijor 

 Island, 375 fathoms. 



Trochocyatlms coronatus (Pourt.).— 25th March, 1873 : north of Culebra 

 Island, near St. Thomas, D. W. Indies, 390 fathoms. 



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