87 



rundtom besat med tætstaaende Grene. Basaldelen fast, som 

 oftest skiveformigt udvidet. Grenene i Regelen ligefra deres 

 Udspring rigt besatte med Polyper, ordnede i Grupper, der 

 enkeltvis samle sig i en liden Stilk, som gaar over i Hoved- 

 grenen. Imellem Grupperne hist og her enkelte Polyper, 

 der gaa umiddelbart over i Grenen. Grenene ende i tætte 

 Polypgrupper og faa derved et kolbeformet Udseende. 

 Polyperne bægerformede, 6—8""" lange, have 8 stærkt frem- 

 springende Ribber, som gaa over paa Tentaklerne, der 

 ere lange med lange Pinnuler. Spiklerne paa Basaldelen 

 ere væsentligst Dobbeltstjerner og sammensatte Stjerner. 

 Nederst paa Stammen Dobbeltstjerner, Klubber og Spindler; 

 øverst paa Stammen og Grenene, Køller, Klubber og 

 Spindler; paa Polyperne store Køller, Klubber og Spindler. 

 Farven lys straagul; Tentaklerne og Mundskiven noget 

 mørkere, spillende noget i det Brune. 



Nephthya rosea, n. sp. 



Tab. XII. Tab. XIII, Fig. 1. 



Zoanthodemet er omtrent lige bredt som høit, indtil 

 40"™. Stammen er rund, 40""" i Omkreds ved Gruuden, 

 men smalner betydeligt af mod Toppen og er overalt lige 

 fra Basaldelen og til Spidsen tæt besat med Grene, der 

 paa Spiritusexemplarer ligge tæt op til Stammen og skjule 

 den ganske, Tab. XII, Fig. 1. Basaldelen breder sig 

 membranagtigt udover de Gjenstande, hvortil Kolonien er 

 fæstet, Fig. 1. Grenene staa ikke langt fra hverandre, 

 men omgive Stammen kredsformigt og ere rigt forsynecle 

 med Smaagrene, der bære en større eller mindre Mængde 

 Polyper. I Regelen begynde Smaagrenene lige ved Gre- 

 nenes Udspring, og paa dem gruppere Polyperne sig saa 

 tæt, at de skjule aldeles Grenen, som derved faar Udseende 

 af en eneste, afrundet Polypgruppe, Fig. 1. 2. I levende 

 Live staa Grenene lidt ud fra Stammen, og naar saa 

 Polyperne strække sig ud, kommer Grupperingen tydeligt 

 frem, idet hver enkelt Smaagren bærer en Gruppe Polyper. 

 Paa enkelte Grene begynde Smaagrenene et Stykke fra 

 Grenens Udspring, og da sees enkelte Polyper at udspringe 

 direkte fra Grenen, ganske nær ved Stammen, ligesom der 

 ogsaa paa dennes nederste Del findes dels enkeltstaaende 

 Polyper, dels 2 og 3, der staa sammen. Saavel Stammen 

 som Grenene ere kalkholdige. 



third part bare, the remaining part beset, round about? 

 with closely situated branches. The basal part firm, most 

 frequently, discoidally dilated. The branches, usually, quite 

 from their root, richly beset with polyps arranged in 

 groups, which, now and then, unite together into a small 

 stalk which passes over into the chief branch. Between 

 the groups, there are, here and there, a few polyps 

 which pass directly over into the branch. The bran. 

 ches terminate in compact groups of polyps, and acquire, 

 thus, a sub-claviform appearance. The polyps chalice-formed, 

 6— 8'" m in length, have 8 strongly prominent ribs which 

 pass over to the tentacles. These are long, with long 

 pinnules. The spicules in the basal part are, principally, 

 bi-stellates and complex stellates. In the lowest part of 

 the stem, bistellates, clavates, and fusees. In the upper- 

 most part of the stem, and the branches, sub-clavates, clav- 

 ates, and fusees. In the polyps large sub-clavates, clav- 

 ates, and fusees. Colour, light straw-yellow; the tentacles 

 and oral disk somewhat darker, shading somewhat to brown. 



Nephthya rosea, n. sp. 



Pl. XII. Pl. XIII, fig. 1. 



The Zoanthodem is about as broad as it is long, and 

 measures up to 40'"'". The stem is cylindrical, and measures 

 40""" in circumference at the base, diminishing consider- 

 ably, upwards, towards the summit, and everywhere, right 

 from the base up to the top, it is closely beset with bran- 

 ches which, in specimens preserved in alcohol, lie close 

 in to the stem and completely conceal it (PI. XII, fig. 1). 

 The basal part spreads itself, membranaceously, over the 

 objects to which the colony is attached (PL XII, fig. 1). 

 The branches are placed, not far apart from each other, 

 and surround the stem in rings; they are richly furnished 

 with branchlets which carry a larger or smaller multitude 

 of polyps. The branchlets. usually, begin to appear 

 quite at the root of the branches, and polyps are grouped 

 so closely upon them that they quite conceal the branch, 

 which consequently, acquires the appearance of a single, # 

 obtusely rounded polyp group (PI. XII, figs. 1. 2). In 

 the live state, the branches stand a little out from the 

 stem, and when the polyps then extend themselves, the 

 grouping arrangement becomes distinctly prominent, because 

 each single branchlet carries a group of polyps. On a few 

 of the branches, the branchlets commence a little way from 

 the root of the branch, and then a few polyps are seen 

 to spring direct from the branch quite close to the stem; 

 whilst, also, upon the lowest part of it are found, partly, 

 single solitary polyps, partly, 2 and 3 placed together. 

 Both, the stem, and the branches, are calcareous. 



