The Norwegian North- Atlantic Expedition. 87 



Depth, 329 m. Temperature, 2,5 C. Bottom ; Clay, sand. A larger 



specimen; 78° 48' N. L., 8° 37' E. L. Depth 199 m. Tempera- 

 ture, 1,1 C. Bottom; Clay. 



Duva aurantiaca n. sp. 



Specific characteristics. 



The Zoanthodem measures up to 75 mm in height. The stem 

 rather stiff, longitudinally grooved; measures 40 mm in circum- 

 ference at the base, terminates, upwards, in two, thick, short 

 branches. The basal portion firm, coriaceous, and not particularly 

 dilated. The stem, round about it, furnished with, somewhat 

 dispersed, branches, alternating in length and thickness. The 

 branches, pretty stiff, ramify, occasionally, into branchlets which, 

 again, ramify into thin small stalks, and each of these carries 4 — 8 

 polyps, of which, sometimes, 2, and sometimes, 3 are concreted 

 together at the base. The stem, the branches, the branchlets, and 

 the stalks, rich in spicules. The polyps are short and thick. Along 

 the entire dorsal side of the body 6 spicular series, extending 

 up to the tentacles. On the ventral side, 2 short spicular series 

 which become absorbed in a broad belt on the Ventrum; above, 

 and below, this belt, no spicules. The spicules have an extremely 

 variable form, but cruciform quadruplets are the most frequent. 

 Colour: the stem and the branches, dark orange-yellow. The 

 polyps, intense violet. 



Habitat One specimen. 78° 2' N. L., 9° 25' E. L. Depth, 

 761 m. Temperature, 0,8 C. Bottom, Clay. 



Duva frigida n. sp. 



The Zoanthodem measures up to 22 mm in height. The 

 stem is longitudinally grooved, cylindrical, and, from a couple of 

 millimetres above the base, is closely beset, round about, with 

 branches, so that it is almost concealed. The branches, bare 

 to the extremity, at which point they, usually, ramify into 3 

 hranchlets each of which carries 6 — 7 polyps. These are cylin- 

 drical, with dilated anterior body, and elongate posterior body; 

 they are 7 — 8 mm in length, and richly beset with spicules in form 



