8 ALCYONARIA, ANTII'ATFIAPJA, AND MADREPOUAiaA COLLECTED BY THE 



of Corallium in the Bay of Biscay. No specimens of Corallium 

 were found by the Challenge?', Lightning, Porcupine, or Caudan expedi- 

 tions in their explorations of the deep-sea fauna of the west coasts of 

 France and the British Islands, but a single specimen of Corallium 

 johnsojii was obtained by the Irish Fisheries Department in 382 

 fathoms off the west coast of Ireland (Hickson, Nature, vol, 73, 

 1905, p. 5, and Fisheries, Ireland Sci. Invest., 1905, v. [1906]). It 

 is established therefore that Corallium does occur on the Atlantic slope 

 of the European shores, but it is apparently very rare, or else very 

 local in its distribution. The axis is pure white, but very hard and 

 somewhat translucent. The coral is not of a character to command a 

 high price, but it is possible that if a locality could be found where it 

 occurs in considerable quantities the thicker branches would have 

 a market value. 



A series of sections through a small branch shows that the colony is 

 female, but the ova are not, I believe, nearly mature. 



Like all the other species of the genus that have been examined, 

 G. maderense is dimorphic. The ova are borne by the siphonozooids and 

 not by the autozooids. In this respect the species differs from C. nohile, 

 in which the gonads are borne by the autozooids only, and resembles 

 C. japonicum, C. konojoi, C. elatius, and C. reginm. 



Family ISIDJE. 

 Isidella elongata, Gray. 

 Isidella elongata. Gray, Cat. Lithophytcs, 1870, p. 14. 

 Isis elongata, Esper (see von Koch, Fauna and Flora, Naples, 

 Monog., XV. 1887, p. 90, plates and figures). 



Station XIII. Lat. K 48° 7'. Long. W. 8° 13'. 412 fathoms. 



The name of this species has been subject to many changes, and it 

 would form an interesting subject for a specialist in such matters to 

 determine which, according to the rules of nomenclature, is the correct 

 one. It was described as a new species by von Koch in 1878 {Alorph. 

 Jahrl). iv. 126), by the name Isis neapolitana. In 1882 he changed 

 the name to Isidella elongata, Esper {Mitt. Zool. Stat. Neapel, bd. iii. 537). 

 In 1887 it is described by the same author as Isis elongata, Esper, but 

 in a " Nachtrag " is referred back again to the genus Isidella. I am in 

 agreement with Wright and Studer (Cliall. Reports, xxxi., 1889) in think- 

 ing it is doubtfully synonymous with Isis elongata of Esper, but it 

 may be the same as Alopsea elongata of Philippi and Mopsea medi- 

 terranea of Kisso. There can be no doubt, however, that it is the 

 same as the Isidella elongata of Gray, and for that reason I have 

 attributed the species to him. The species was obtained by the 



