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. 



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



Isis Linnxus. 



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

 /sis (in part) Linnseus. Systema Naturae, 1758, p. 1287. 

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



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

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

 /sis Lamouroux. Hist. Polypes coral, flexibles, 18 16, p. 4687. 

 /sis Lamouroux. Exposition Methodique, 1821, p. 39. 

 /sis Lamarck. Hist. Nat. Anim. sans Vert., 1836, p. 473. 



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

 /sis Gray. Proceedings Zool. Society of London, 1857. 

 /sis Kölliker. Icones Histiologicse, H, 1865, p. 140. 



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

 /sis Studer. Versuch eines Systemes der Alcyonaria, 1887, p. 46. 

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

 /sis Thomson and Simpson. Alcyonarians of the Indian Ocean, H, Alcyonarians of the Deep 

 Sea, 1909, p. 180. 



The original genus Isis included not only all of the present Isidcc^ but also certain of 

 the Mclitodidcr, and resulted in the same confusion as in the synonymy of the family Isidcr. 

 Lamouroux (18 16) appears to have used the name in almost its modern signification; but 

 subsequent writers included many other forms, until Gray (1857) restricted the genus. Kölliker 

 (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 

 Isidince will .serve for the genus. 



The type species of this genus is his liippuris Linn., and the only other known species 

 in the Isis reticulata described beyond. 



I. Isis hipptiris Linnseus. (Plate I, figs, i, \a, \b\ Plate V, fig. i). 



/sis liippuris (in part) Linnaeus. Systema Natura;, I2'h Edition, p. 1287. 



/sis liippuris (in part) Pallas. Elenchus Zoophytorum, 1766, p. 233. 



/sis liippuris Ellis and Solander. Natural History of Zoophytes, 17S6, p. 105. 



/sis liippuris (in part) Esper. Die Pflanzenthiere, Vol. \, 1791, p. 279. 



/sis liippuris Lamouroux. Histoire Polypiers coralligenes fle.xibles, 18 16, p. 476. 



/sis liippuris Lamouroux. Exposition Methodique, 1821, p. 39. 



/sis liippuris Lamarck. Histoire Naturelle des animaux sans vertebres, 1836, p. 475. 



