The Norwegian North-Atlantic Expedition. 97 



Specific characteristics. 



The Zoanthodem measures up to 40 mm in height. The 

 basal part is membranaceously dilated, and hard. The stem cy- 

 lindrical, longitudinally grooved, ramous. The branches are situated 

 far apart from each other, are rather long, and ramify into several 

 short branchlets each of which carries 3 — 6 polyps, of which, some- 

 times 2, and sometimes, 3 are concreted together at the base. 

 The polyps are cylindrical, somewhat dilated towards the ten- 

 tacular disk, non-retractile, with long posterior body, and fur- 

 nished with spicules. The tentacles have, in the middle of the 

 aboral side, a thick ridge of spicules; the lateral margins, and th,3 

 pinnules, are devoid of spicules but are closely beset with nemaf 

 cysts which are, also, met with upon the arcuate oral disk. T i 

 basal part is specially rich in spicules, which appear, principall/, 

 as clavates and complex stellates. The stem, the branches and 

 the branchlets are, also, rich in spicules, the spicular forms, here, 

 being, principally, clavates, sub-clavates and bi-stellates. In the 

 polyps, large sub-clavates and clavates appear, principally, as the 

 characteristic forms. Colour; yellow, shading somewhat towards red. 



Habitat. Three specimens. 74° 54' N. L., 14° 53' E. L. 

 .Depth, 1203 m. Temperature, 1,2 C. Bottom; Clay. 



Barathrobius*) digitatus n. g. et sp. 



Generic characteristics. 



The Zoanthodem arborescent, or shrub-formed. The stem 

 ramous. The branches, partly, not ramified, partly, ramified 

 into branchlets. The polyps cylindrical, retractile, with long 

 anterior body rich in spicules. The stem and the branches, 

 also, their sareosoma, rich in spicules. Septa containing spicules. 

 The gullet furnished with spicular series. 



Specific characteristics. 



The Zoanthodem measures up to 70 mm in height. The 

 stem, cylindrical, ramous. The basal part hard, membranaceously 

 dilated, forming, often, a tube filled with coarse sand, and from 

 it stolons, occasionally, proceed. The branches are, as a rule, situ- 

 ated upon the superior two- third parts of the stem, placed far 



*) BâpaSpov = a precipice, Biovg = living. 



Nyt Magazin f. Naturv. XXX. II. 



