13 



A cross section of the stem shows a not very well defined axis, a relatively thin 

 ccenenchyma, a series of water-vascular canals around the axis, and few if any large canals 

 penetrating the axis itself .... 



Color. The colony is a dark umber brown, lighter on the side devoid of polyps. A 

 much larger specimen than the one described, from Station 273, is yellowish in color from a 

 sponge which covers it, and the axis is penetrated by conspicuous water-vascular canals. 

 A number of large dried specimens were also secured from the same station. 



Genus Suberia Studer. 



Suberia Studer. Monatsbericht der Königl. Akademie der Wissenschaften zu Berlin, 1878, p. 666. 



Suberia Studer. Versuch eines Systemes der Alcyonaria, 1887, p. 28. 



Suberia Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. XXXII. 



Suberia Delage et Hérouard. Traite de Zoölogie Concrete, II, 2, 1901, p. 413. 



The original definition of this genus, as given by Studer, may be translated as follows : 

 "Stem simple or branched, upright. Axis formed of not coalesced rod-like spicules 

 immersed in a horny substance and without water-vascular canals. Ccenenchyma thick, containing 

 thorny spindle-shaped spicules, Calyces large, standing at right angles from the stem, with an 

 eight-rayed margin. Polyps with fine spindle-shaped spicules from the base to the tentacles. 

 A circlet of longitudinal canals around the axis". 



The same writer (1887) modified somewhat this definition as follows: 

 "In Suberia the nuclear mass is well defined and constitutes the axis of the cylindrical 

 sterns, which are slightly branched and bear polyps on all sides. Calyces aggregated, particularly 

 on the club-shaped ends of the sterns. The upper part of the polyp is retractile within a distinct 

 calyx. A canal system of relatively large water-vascular canals penetrates the axis". 



Wright and Studer (18S9) give a translation of the original definition of Studer ; but 

 Studer's later definition, just quoted, seems preferable. 



Suberia köllikeri Studer is the type of this genus. Other known species are Suberia 

 clavata Studer, 5. genthi Wright and Studer and the new species in the Siboga collection. 



1 . Suberia köllikeri Studer. 



Suberia köllikeri Studer. Monatsbericht der Königl. Akad. der Wissenschaften zu Berlin, 1878, 

 p. 667. 



Stat. 297. io°39'S., I23°40'E. 520 meters. Soft grey mud with brown upper layer. 



Colony incomplete, consisting of a central stem and five laterally disposed branches. 

 Length 20.3 cm. The main stem is round, varying from 6 mm. to 3.5 cm. in diameter, the 

 latter measurement being taken near the middle of the colony. There are several knob-like 

 swellings on the stem that may indicate new branch origins. There are three branches on one 

 side and two on the other, all being simple except one which is forked. They vary from 1.5 cm. 

 to 7.3 cm. in length and are about 3 mm. in diameter, except at the clavate ends which are 

 7.3 mm. across. These enlarged ends remind one of the genus Paragorgia. The calyces are 



