CORALS FROM MURRAY, COCOS-KEELING, AND FANNING ISLANDS. 8l 



Southeast reef of Murray Island, Lithothamnion ridge, from shallow cleft pool, 

 1,740 feet from shore; water, 2.5 inches deep at low tide; bottom hard, rocky. 



Distribution. — Red Sea; Murray Island; Fanning Island (Elschner). 



This species has a very wide distribution, its known geographic range being from 

 Red Sea to Fanning Islands. One specimen of Stylopkora, collected by C. Elschner 

 in Fanning Island, is essentially typical St. pistillata; another has wide branches 

 of the form of Dana's St. mordax. As the latter specimen is not stunted, it appears 

 to me that St. mordax may be a valid species, but it is very close to St. pistillata, dif- 

 fering principally in the greater width of the branches, which may be meandriform. 



Stylophora mordax (Dana). 

 Plate 25, figures I, la, Dana's type; figures 2, la, zb, specimen from Fanning Island. 

 1846. Sideropora mordax Dana, U. S. Expl. Exped., Zooph., p. 518, plate 49, figs. 1, la, lb. 



Remarks on this species are made in the last paragraph of the discussion of 

 Stylophora pistillata and need not be repeated. Plate 25, figures 1, \a, are of Dana's 

 type (No. 344, U. S. Nat. Mus.); plate 25, figures 2, 2a, zb, are of a colony collected 

 by Mr. Elschner at Fanning Island. 



Distribution. — Fiji Islands (Dana); Fanning Island (Elschner). 



Family OCULINID^; Milne Edwards and Haime. 

 Genus ACRHELIA Milne Edwards and Haime. 



1849. Acrhelia Milne Edwards and Haime, Acad. Sci., Comptes rend., vol. 29, p. 69. 



Type species: Acrhelia horrescens (Dana). 



Acrhelia horrescens (Dana). 

 Plate 18, figure 41 of Dr. Mayer's article. 

 1846. Oculina horrescens Dana, U. S. Expl. Exped., Zooph., p. 392, plate 28, figs. 1, la, lb. 



1850. Acrhelia horrescens Milne Edwards and Haime, Ann. Sci. nat., 3d ser., Zool., vol. 13, p. 80. 



Identification based on comparison with Dana's type, No. 5, U. S. Nat. Mus. 

 One of the best-known Pacific Ocean corals; a description seems superfluous. 



Station, Murray Island. — Southeast reef, line I, 1,000 feet from shore, water 

 about 17 inches deep. 



Distribution. — Australia; Fiji Islands. 



Family EUSMILIID. I E Verrill. 

 Genus EUPHYLLIA Dana. 



1846. Euphyllia (pars) Dana, U. S. Expl. Exped., Zooph., p. 157. 



1848. Leptosmilia Milne Edwards and Haime, Acad. Sci., Comptes rend., 



1851. Euphyllia Milne Edwards and Haime, Polyp. Terr, paleoz., p. 53. 



ol. 27, p. 467. 



Type species: Caryophyllia glabrescens Chamisso and Eysenhardt. 

 The determination of the type species of this genus necessitates discussing 

 its history. Dana referred to it the following species: 



Species referred to Euphyllia by Dana. 



