Synoptic view of the genera and species of GORGONELLID/E 

 collected by the Siboga Expedion. 



New species are indicated by an asterisk (*). 



Gorgonella. 



G. orientalis , umbraculum , *delicatula , 

 * rigid a. 



Verrucella. 

 V. rubra, flaviflora (new name), *stellata. 



C. pectinata. 



Juncella. 



Scirpearella. 



S. rubra, gracilis, *regia, *hemispherica. 



Nicella. 



N. *coralloides, *carinata. 



Ellisella. 



E. *flava. 



Plumigorgia (new genus). 



P. *hydroides. 



Isidoides (new genus). 



/. *armata. 



y. juncea, gemmacea, racemosa, *sanguinea. 



The table shows that the Siboga Expedition secured 2 1 species of Gorgonellidae 1 1 of 

 which are new; and that these species were divided among 9 genera, 2 of which are new. 



Systematic description of genera and species. 

 Genus Gorgonella Valenciennes (modified). 



Gorgonella Valenciennes. Comptes-rendus, tome XLI, 1855, p. 14. 



Gorgonella Milne Edwards et Haime. Histoire Naturelle des Coralliaires, Vol. I, 1857, p. 183. 



Gorgonella Kdlliker. Icones Histiologicae, II, 1865, p. 139. 



Gorgonella Studer. Monatsbericht der Konigl. Akademie der Wissenschaften zu Berlin, 1878, 



p. 66 1. 



Gorgonella Studer. Versuch eines Systemes der Alcyonaria, 1887, p. 68. 



Gorgonella Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. LXVI. 



Gorgonella (Val. emended), Delage et Herouard. Traite de Zoologie concrete, II, 2, 1901, p. 428. 



Gorgonella Hickson. Alcyonaria of the Maldives, 1905, p. 817. 



The original discription of this genus is as follows: 

 "Le sclerobase ramifie en fines branches rameuses et tres-divisees". 

 MILNE EDWARDS and HAIME (1857) define the genus as follows: 



"Colony much branched, ccenenchyma very thin; calyces included or but little exserted". 

 (Translation). 



KOLLIKER (1865) appears to have been the first to make a critical study of the spicules 

 of this genus. His definition, freely translated, is as follows: 



"Axis commonly without layers, radiately striated. Calyces when evident, low warts. 

 Spicules of the coenenchyma warty double spheres and double spindles. .07 to .1 mm. in length 

 Polyp spicules are spindles .13 mm. long. 



