124 



Krystallofanes 1 polaris, n. g. et sp. 



Tab. XIX, Fig. 1—45. 



Zoanthoderaet indtil 20""" høit. Stammen omtrent 

 1 2""" i Omkreds ved Grunden, men udvider sig næsten 

 kølleformigt i Toppen, der er godt besat med Polyper, 

 blod og gjennemsigtig, svagt riflet paalangs af de store 

 Længdekanaler og paa dens nederste Del nøgen i en 

 Høide af 5'"'" fra Basaldelen, Fig. 1. Denne er tynd, 

 fast, membranagtig og kun lidet udvidet. Grenene danne 

 tykke, korte, meget brede, gjennemsigtige Lapper, der om- 

 give Stammen næsten krandsformigt med store Mellemrum, 

 idet nemlig hver Krands. hvoraf der er høist 3, staa langt 

 fra hverandre, saa at Stammen stykkevis bliver blottet, 

 Fig. 1. Enhver Gren er nøgen og noget smal ved sit 

 Uclspring, men bliver bredere mod Enden og bærer en 

 Samling af 6—8 Polyper, hvis Celler staa tæt i hverandre 

 uden at være sammenvoxede, idet et smalt Coenenchym 

 adskiller dem. 



Polypcellerne ere halvkugledannede, tæt besatte med 

 Kalk, og naar Polypen begynder at trække sig ind, ser 

 det ud, som om Cellens Rand har 8 Tænder; er Polypen 

 fuldt uclstrakt, sees vanskelig nogen Grændse mellem dens 

 Bagkrop og Cellen; thi de gaa saagodtsom umærkeligt over 

 i hinanclen; kun derved, at Spiklerne paa Cellen ligge 

 tættere til eller paa hverandre, end paa Bagkroppen, kan 

 de ved Hjælp af Loupe eller stærkere Forstørrelse adskilles, 

 Fig. 2, a. 



Polyperne ere retraktile, cylindriske, omtrent 10 — 12""" 

 lange, med en udviklet Bagkrop. Denne er omtrent 5""" 

 lang, forsynet med 8 Længderækker Spikier, som ere vel 

 adskilte ved et nøgent, gjennemsigtigt Mellemrum. I hvert 

 Spikelfelt er der i Regelen 3 Rækker Spilder, som ligge 

 lidt paaskraas, Fig. 2, b. Forkroppen er 3 — 4'"'" lang og 

 lidt indkneben, hvor den gaar over i Bagkropen, men ud- 

 vider sig op mod Tentakelskiven og er vel forsynet med 

 Spilder, der her ligge paatvers-i Begyndelsen, men skraane 

 stærkt af" mod Tentakelskiven, hvor de ordne sig i Rækker, 

 som førend de gaa over paa Tentaklerne, vige fra hver- 

 andre og danne triangulære Felter, fra hvis spidse Vinkel 

 udgaar en kort Række Spilder, Fig 2, c. Mundskiven er 

 næsten flad med en afjang Mundspalte. Tentaklerne 3 — 4""" 

 lange, temmelig tykke ved Grunden og paa deres aborale 

 Side pantsret med Spiklerne ; Pinnulerne staa temmelig 

 tæt, ere tykke og forsynede med Spilder, Fig. 2. 



1 Af xpu'araXXo?, en Krystal og <powo;, lysende. Paa Tavle 

 XIX staar Chrysofanes, skal være Krystallofanes. 



Krystallofanes 1 polaris, n. g. et sp. 



Pl. XIX, figs. 1—4.-). 



The Zoanthodem measures up to 20""" in height. 

 The stem measures about 12""" in circumference, at the 

 base, but becomes somewhat dilated, in subclaviform, at 

 the top, which is well covered with polyps. It is soft and 

 transparent, slightly grooved longitudinally, by the large 

 longitudinal ducts, and, in its lowest part, is bare for a 

 height of 5 mm from the base (fig. 1). The basal part is 

 thin, hard, and membranaceous, and it is only slightly 

 dilated. The branches occur as short, thick, very broad, trans- 

 parent excrescences, which surround the stem almost in 

 wreaths, having wide intervals between them owing to each 

 wreath, of which there are 3 at the most, being situated far 

 apart from the adjacent one, causing the stem, in portions, 

 to be exposed (fig. 1). Every branch is bare, and rather 

 narrowat its root, but becomes broader towards the extremity 

 and bears a collection of 6 — 8 polyps, whose cells are 

 placed close up to each other without, however, being 

 concreted together, as a slender sarcosoma separates them. 



The polyp-cells are semispherical in form, and are 

 closely covered with calcium; when the polyp begins to 

 retract itself, it appears as if the margin of the cell has 

 8 teeth, but when the polyp is fully extended, it is with 

 difficulty that any margin can be seen between its posterior 

 body and the cell, because they pass into each other, 

 or are absorbed the one into the other, almost imperceptibly. 

 The transition or margin can only be recognised with the 

 assistance of a magnifier, or on considerable magnification, 

 from the fact that the spicules of the cell lie closer to, or 

 upon, each other than on the posterior body (fig. 2, a). 



The polyps are retractile, cylindrical, and measure 

 about 10 — 12""" in length, and they have a developed 

 posterior body which measures about o mm in length, 

 and is furnished with 8 longitudinal series of spicules, 

 well separated by a bare, transparent, interval. In each 

 spicular area there are, as a rule, 3 series of spicules, 

 Avhich are placed a little diagonally (fig. 2, h). The 

 anterior body measures 3 — 4'""' in length, and is a little 

 constricted at the point where it passes over into the 

 posterior body, but it becomes dilated in the proximity 

 of the tentacular disc, and is well supplied with spicules 

 wdiich, here, are placed, at the commencement, transversally, 

 but slope quickly off towards the tentacular disk, where 

 they become arranged in series which, before they pass 

 over to the tentacles, diverge from each other and form 

 triangular spaces, from whose acute angle a short series 

 of spicules issues (fig. 2, c). The oral disk is almost flat, 



1 From xpvaTaXXo.s = a crystal — cpotMo; = gleaming. 

 Erratum: Owing to a clerical error, the appellation- Chrysofanes is 

 erroneously printed on PI. XIX instead of the correct one, Krystallofanes. 



