43 



saaledes bladet, korsformet Firling, 0.200"™ Længdestok, 

 med en uformelig Tverstok, Fig. 36 ; korsformede, takkede, 

 mindre Firlinger, Fig. 37. 38. 39; korsformet Firling 

 stærkt besat med Torne, Længdestok, 0.100™'", Tverstok, 

 0.050""", Fig. 40, og endelig en ganske liden, glat. kors- 

 formet Firling, omtrent lige lang som bred. 0.048'"'" i Gjen- 

 nemsnit, Fig. 41. 



Generationsorganerne udvikle sig paa mindst 4 Septula. 



Farven. 



Stammen og Grenene ere mørk orangegule; Polyperne 

 violette; Tentaklerne intens violette. 



Findested. 



Station 359. Et Exemplar. 



Artskarakter. 



Zoanthodemet indtil 75'"'" høit. Stammen temmelig 

 stiv, furet paalangs, 40'""' i Omkreds ved Grunden, endende 

 opad i to tykke, korte Grene. Basaldelen fast, læderagtig, 

 ikke synderlig udvidet. Stammen rundtom forsynet med 

 noget spredte Grene, afvexlende i Længde og Tykkelse. 

 Grenene temmelig stive, dele sig snart i Smaagrene, som 

 igjen forgrene sig i tynde Smaastilke, bærende hver 4 — 8 

 Polyper, af hvilke dels 2, dels 3 ere sammenvoxede ved 

 Grunden. Stammen, Grenene, Smaagrenene og Stilkene 

 rige paa Spikier. Polyperne korte, tykke. Langs Krop- 

 pens hele Dorsalside 6 Spikelrækker, strækkende sig op 

 paa Tentaklerne. Paa Ventralsiden to korte Spikelrækker, 

 tabende sig midt paa Bugen i et bredt Belte ; oven- og neden- 

 for dette ingen Spikier. Spiklerne have yderst forskjellig 

 Form ; korsdannede Firlinger træffes hyppigst. Stammen og 

 Grenene mørk orangegule. Polyperne intens violette. 



Duva frigida, n. sp. 



Tab. IV. Fig. 42—69. 



Zoanthodemet indtil 22""" høit. Stammen, der er 

 rund, fast. furet paalangs. er ved Grunden 20'"'" i Omfang. 



ramified spicules (fig. 35), but not quite so rarely do we 

 meet, here and there, with different kinds of quadruplets, 

 which have, however, all assumed the cruciform; for instance, 

 foliaceous cruciform quadruplets, with a longitudinal arm 

 measuring 0.200""", but having an amorphous transversal 

 arm (fig. 36); cruciform, spicate, smaller quadruplets (figs. 

 37. 38. 39); a cruciform quadruplet strongly beset with 

 aculeæ, having a longitudinal arm measuring 0.100""" and 

 a transversal arm measuring 0.050""" (fig. 40} ; and finally, 

 a quite small, smooth, cruciform quadruplet, about as 

 long as is it broad, measuring 0.048""" in diameter (fig. 41). 

 The generative organs develope themselves on, at 

 least, 4 septula. 



Colour. 



The stem and the branches are dark orange-yellow. 

 The polyps violet. The tentacles deep-violet. 



Habitat. 



Station No. 359. One specimen. 



Specific characteristics. 



The Zoanthodem measures up to 75""" in height. 

 The stem rather stiff, longitudinally grooved, measures 40 mm 

 in circumference at the base, and terminates, upwards, in 

 two thick short branches. The basal portion firm, coriace- 

 ous, and not particularly dilated. The stem, round 

 about it, furnished with, somewhat dispersed, branches 

 alternating in length and thickness. The branches pretty 

 stiff, ramify, sometimes, into branchlets which, again, ramify 

 into thin small stalks, each of them carrying 4—8 polyps, of 

 which, sometimes 2, and sometimes 3. are concreted to- 

 gether at the base. The stem, the branches, the branch- 

 lets and the stalks rich in spicules. The polyps short, and 

 thick. Along the entire dorsal side of the body, 6 spicular 

 series, extending themselves up on the tentacles. On the 

 ventral side, two 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 

 deep violet. 



Duva frigida, n. sp. 



PL IV. Figs. 42—09. 



The Zoanthodem measures up to 22" m * in height. 

 The stem, which is cylindrical, firm, and longitudinally 



6* 



