CORALS FROM MURRAY, COCOS-KEELING, AND FANNING ISLANDS. 75 



abundant. Zooid pale yellow." Specimens with thicker, less attenuate branches (pi. 20, 

 fig. 4), "from shallower water on the southern side of the lagoon, color pale brown, the 

 zooid pale yellow." 



Distribution. — Red Sea; Indian Ocean. 



Genus POCILLOPORA Lamarck. 



1816. Pocillopora Lamarck, Hist. nat. Anim. sans Vert., vol. 2, p. 273. 



1849. Pocillopora Milne Edwards and Hainie, Acad. Sci., Comptes rend., vol. 29, p. 261. 



Type species: Pocillopora acuta Lamarck. 



The following species are considered in this paper: 



Pocillopora bulbosa Ehrenberg; Murray Island; Cocos-Keeling. 



damicornis (Pallas) Dana; Cocos-Keeling; Fanning Island. 



danae Verrill; Murray Island. 



verrucosa (Ell. and Sol.) Lam.; Cocos-Keeling. 



meandrina Dana; Fanning Island. 



elegans Dana; Cocos-Keeling. 



eydouxi M. Edw. and H.; Cocos-Keeling. 



woodjonesi, new species; Cocos-Keeling. 



As incidental to describing the species of Pocillopora and their variants found 

 in the Hawaiian Islands,^ most of the Pacific representatives of the genus were 

 reviewed, reference may be made to that paper and the information contained 

 in it need not be repeated here. As there is a definite order, which I trust is ob- 

 vious, in the succeeding arrangement of species, a synoptic table seems unnecessary. 



Pocillopora bulbosa Ehrenberg (fide Dana). 



Plate 21, figures i, \a, specimen identified as P.bulbosahy Dana. Also plate 12, figures I, 2, 3 of Dr. Mayer's article. 



1846. Pocillopora bulbosa Dana, U. S. Expl. Exped., Zooph., p. 527, plate 49, figs. 5, 5a. 

 1907. Pocillopora acuta Bedot, Madreporaires d'Aniboine, p. 152, plate 7, figs. 14-17. 

 1907. Pocillopora Wood Jones, Proc. Zool. Soc. London for 1907, p. 536, plate 28, fig. 3. 

 1910. Pocillopora Wood Jones, Coral and Atolls, p. 99, text-fig. 31. 



There is much confusion regardmg the names damicornis and bulbosa, as the 

 former name proposed by Pallas included an aggregation of forms now divided 

 into a number of species. Lamarck (1816) refers to Esper (Fortsetz., plates 46 and 

 46fl), as illustrating damicornis; Dana refers to plate 47 of Esper (Fortsetz.), as 

 representing damicornis, and to plate 46 of the same work as P. bulbosa. Milne 

 Edwards accepts Dana's identifications, but refers Esper's plate 46a (Fortsetz.) to 

 P. damicornis, wherem he differs from Dana, but both agree on P. bulbosa. Regard- 

 ing the latter, Milne Edwards says: "Ce polypier pourrait bien ne pas etre dis- 

 tinct specifiquement du P. daynicornis." It therefore appears that P. bulbosa 

 Ehrenberg is a synonym of P. damicornis (Pallas) (emend. Lamarck), and that the 

 damicornis of Dana (Esper, Fortsetz., plate 47) should receive another name; but 

 a positive decision can not be reached until Lamarck's original specimens are 

 restudied. As the original specimens of Dana's P. bulbosa and P. damicornis are 

 in the U. S. National Museum, I am following his usage. In his treatment of 

 P. bulbosa he is in accord with Milne Edwards, but the similarity between it, 

 P. cespitosa Dana,^ and P. acuta Lamarck is so great that the three may belong 

 to the same species. Dana and Milne Edwards appear to disagree regarding P. 

 damicoryiis. 



Stations, Murray Island. — Southeast reef, line I, 400, 600, 800, 1,200, 1,400, 

 and 1,600 feet from shore, and Lithoth amnion ridge. 



'U. S. Nat. Mus. Bull. 59, pp. 84-199, 1907. 



'See Vaughan, U. S. Nat. Mus. Bull. 59, pp. 86-91, plate 10, figs, i, la, 2, 2a; plate 1 1, figs. I, 2, 1907. 



