THE GORGONACEA OF THE SIBOGA EXPEDITION 



IV. THE PLEXAURID^ 



C. C. NUTTING, 



Professor of Zoology, State University of lov 



With 4 plates. 



(Aided by a grant from the Elizabeth Thompson science fund.) 



Family Plexaurid.-e Gray. 



Plexaura Lamouroux. Exposition Methodique, 182 1, p. 35. 



Plexaiiridce Gray. Annals and Magazine of Natural History, Series 3, Vol. IV, 1859. 



Eunicea -}- Plexaura Milne Edwards et Haime. Histoire naturelle des Coralliaires, 1857, V'^'- I» 



pp. 146, 152. 

 Euniceida Kölliker. Icones Histologicae, II, 1865, p. 137. 



Plexauridce Verrill. Transactions Connecticut Academy of Science, Vol. I, 1869, p. 135. 

 Euniceida Ridley. Annals and Magazine of Natural History, Series 5, Vol. 11, 1883, p. 253. 

 Plexauridce Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. 135. 

 Plexauridce Studer. Alcyonarien aus der Sammlung des Naturhistorischen Museums in Lübeck, 



1894, p. 1 1 r. 

 Plexauridce Brundin. Bihang til Svenska Vet.-Akad. Handlingar, Hand 22, Afd., 17, N^' 3, 



1896, p. 17. 

 Plexauridce Thomson and Henderson. Ceylon Pearl Oyster Report, Alcyonaria, 1905, p. 304. 



The original definition of the family, as given by Gray, is as follows: 

 "Bark granular, persistent, cork-like, without any important grooves. Cells placed equally 

 on all sides of the branches". 



SIBOGA-EXI'EDITIE XIII /''. - I 



