Systematic description of genera and species. 



Genus Lophogorgia Milne Edwards ct Haime. 



Lophogorgia Milne Edwards and Haime. Histoire naturelle des Coralliaires, I, 1857, p. 167. 



Gorgonia (in part) Kölliker. Icones Histiologica:, II, 2, 1865, p. 139. 



Leptogorgia (in part) Verrill. Transactions Connecticut Academy of Arts and Sciences, I, 2, 



1867—71, p. 387. 

 Leptogorgia Duchassaing de Fontbrcssin. Revue des Zoophytes et des Spongiaires des Antilles, 



1870, p. 17. 

 Lophogorgia Studer. Versuch eines Systemes der Alcyonaria, 1887, p. 63. 

 Lophogorgia Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. 150. 

 Lophogorgia Belage et Herouard. Traite de Zoologie Concrete, II, 2, 1901, p. 420. 



Tlie original definition of this genus is as follows : 



" Polypieroide etale en forme de panache ou d'eventail, a une ou ä plusieurs branches 

 maitresses et ä tige aplatie". 



KoLLiKER (1865) placed practically all of the genera of Gorgonidrc, \x\d\^^mg Lophogorgia, 

 in the genus Gorgonia. 



No further definition of the genus appears until Studkr, (1887) gave the definition of 

 which the following is a translation : 



*• Colony upright, flabellate, with llattened stem and branches and cylindrical twigs. 

 Polyps without calyces, immersed in the ccenenchyma and scattered on all .sides of the ultimate 

 branchlets. The larger water-vascular canals are on the flattened .sides of the branches, but are 

 peripheral on the round twigs. Spicules small double spindles". 



Wright and Studer, (1889) give a definition which is practically identical with the one 

 just quoted, and which is adopted in the present work. 



The type of the genus Lophogorgia is Lophogorgia palma (Pallas). Other described 

 species are Lophogorgia alba \ L. crista Möbius, L. irregularis Thomson and Henderson, 

 L. lutkeni Wright and -Studer, /.. riibrotiiicta T. and H. and the single new species in the 

 Siboga Collection '-. 



1. Lophogorgia pinnata new species. (Plate I, figs, i, \a\ Plate III, fig. i). 



Stat. 273. Anchorage off Fulu Jedan, East coast of Aru Islands. 13 meters. 



Colony flabellate in form, branching pinnate, not anastomosing, height 31 cm., spread 

 about 12 cm. The stem and larger branches are flattened and marked on their flat surfaces 

 with impressed grooves which are often tortuous and irregular in number and extent. .Stem 

 with a cross section of 4.5 mm. X 3-6 mm. 4 cm. from its base it divides into two large and 

 subequal branches. One of these is quite tortuous in its pro.ximal part, giving off irregularly 

 alternate and lateral branchlets which are usually simple, slender and curved outward. The 

 distal part of tliis branch is comj)aratively straight and gives oft usually sim[)le irreguIarK' 



' This species is merely mentioned liy 1)UCH.\SSAING I)F. FoXTliRESSiN (1870) who does not pivc the authority. 



2 L. ßammca (Ellis and Sobnder) is reg-irded by Mli.NE Edwards and IIaimi; as a synonym of /. palnia (I'allas). 



