It will be seen from the table that of the thirteen species collected, three were 

 previously known, two are represented by material insufficient for identification, and eight are 

 described as new. 



Systematic description of genera and species of ISID/E 

 of the Siboga collection. 



Isidinae. (See the definition of this subfamily on p. 3). 



Isis Linnaeus. 



Isis (in part) Linnaeus. Hortus Cliffortianus, 1737, p. 479. 

 Isis (in part) Linnaeus. Systema Naturae, 1758, p. 1287. 

 Isis (in part) Pallas. Elenchus Zoophytorum, 1766, p. 220. 

 Isis (in part) Ellis and Solander. Natural History of Zoophytes, 1786, p. 104. 

 Isis (in part) Esper. Die Pflanzenthiere, Vol. I, 1791, p. 27. 

 Isis Lamouroux. Hist. Polypes coral, flexibles, 1816, p. 4687. 

 Isis Lamouroux. Exposition Methodique, 1821, p. 39. 

 Isis Lamarck. Hist. Nat. Anim. sans Vert., 1836, p. 473. 



Isis (in part) Milne Edwards et Haime. Hist. nat. des Coralliaires, Vol. I, 1857, p. 193. 

 Isis Gray. Proceedings Zool. Society of London, 1857. 

 Isis Kolliker. Icones Histiologies, II, 1865, p. 140. 



Isis Dana. Synopsis Report on Zoophytes of the Wilkes Expedition, 1859, p. 144. 

 Isis Studer. Versuch eines Systemes der Alcyonaria, 1887, p. 46. 

 Isis Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. XLV. 

 Isis Thomson and Simpson. Alcyonarians of the Indian Ocean, II, Alcyonarians of the Deep 

 Sea, 1909, p. 1 80. 



The original genus Isis included not only all of the present Isidce, but also certain of 

 the Melitodidee, and resulted in the same confusion as in the synonymy of the family Isida. 

 LAMOUROUX (1816) appears to have used the name in almost its modern signification; but 

 subsequent writers included many other forms, until GRAY (1857) restricted the genus. KOLLIKER 

 (1865) was the first to carefully describe the spicules and use them in his generic definition, 

 and subsequent writers have used the name as understood in the present work. 



This being the only genus of the subfamily Isidina, the definition already given for the 

 Isidincz will serve for the genus. 



The type species of this genus is Isis hippiiris Linn., and the only other known species 

 in the Isis reticulata described beyond. 



i. Isis hipp^lr^s Linnaeus. (Plate I, figs, i, i a, \b\ Plate V, fig. i). 



Isis hippuris (in part) Linnaeus. Systema Naturae, i2th Edition, p. 1287. 



Isis hippuris (in part) Pallas. Elenchus Zoophytorum, 1766, p. 233. 



Isis hippuris Ellis and Solander. Natural History of Zoophytes, 1786, p. 105. 



Isis hippuris (in part) Esper. Die Pflanzenthiere, Vol. I, 1791, p. 279. 



Isis hippuris Lamouroux. Histoire Polypiers coralligenes flexibles, 1816, p. 476. 



Isis hippuris Lamouroux. Exposition Methodique, 1821, p. 39. 



Isis hippuris Lamarck. Histoire Naturelle des animaux sans vertebres, 1836, p. 475. 



