87 



Bække, der staar nærved Bladenes Basis, opnaar en Længde 

 af indtil 3 Mm. Imellem disse Pigge, der ere stærkt ud- 

 viklede Zooider, sees en Mængde almindelige Zooider 

 ligesom strøede over Stokken, og som endog gaa over paa 

 Furen. Paa den øverste Del af Ventralfladen derimod er 

 Furen som oftest forsvunden, og da er hele Fladen tæt 

 besat med Zooider, hvoraf de, der danne Pigge, ere de 

 mest fremragende. 



Dorsalfladens Midtparti er nøgent; og til hver Side, 

 mellem hver Bladbasis, sees paa den nederste Del 1, 

 paa den midterste og øverste Del 2 Rækker og stundom 

 Begyndelsen til en 3die Række Zooider, hvoraf enkelte 

 endog gaa op paa selve Bladgrunden. 



Bladene staa temmelig vidt fra hverandre, ere brede 

 ved Basis og bære lange Celler (3 — 4 Mm.), der ere for- 

 synede med stærke Spicier, hvoraf ialmindelighed 8 rage 

 et godt Stykke ud over Cellens frie Rand. Af disse Spic- 

 ier vare de længste 2,8 Mm. lange og 0,11 Mm. brede. 



Polyperne have en Rad røde Spicier paa den aborale 

 Flade, saavel af Tentaklerne, som af deres Traade (Pin- 

 nulæ). 



Zooiderne ere ligeledes udstyrede med Spicier, især 

 de pigformede, hos hvilke de endog opnaa en Længde af 

 indtil 3,3 Mm., og en Bredde paa Midten af 0,16 Mm. 



Zooiderne have som sædvanligt to lange Mesenterial- 

 filamenter, der forlænge sig ind i den kjødede Del af Stok- 

 ken, og variere i Længde fra 1,21 Mm. til 2,5 Mm. 



Den hypogastriske Hule er temmelig lang og forlæn- 

 ger sig ind i Stokken. 



Axen bliver opad tyndere og tyndere, og ender hage- 

 formigt 15 Mm. fra Spidsen afRachis. Nedad bliver den 

 tykkere, og beholder Tykkelsen indtil den nederste Tre- 

 diedel af Stilken, hvor den igjen aftager. I en Afstand 

 af 10 Mm. fra den nederste Ende danner den en Anse, 

 gaar saa omtrent 10 Mm. opad, for i en yderst fin Spids 

 at fæste sig paa Skeden. Den er paa det Tykkeste 1 Mm. 



Farven paa Bladene er lyserød, isprængt mørkerøde 

 Længdestriber. Cellerne og Bladets Ventralrand stærk 

 brunrøde. Polyperne bleg gulrøde med en stærk rød Rand 

 paa den aborale Flade af Tentaklerne. Rachis vinrød; 

 Stilken svag gulrød. 



Findested Christiansund, hvor den paa en enkelt Lo- 

 calitet forekom temmelig hyppig paa Lerbund i en Dybde 

 fra 80—100 Favne. Sars angiver at have fundet den 

 ved Christiansund paa 30—70 Favne, ved Østeraat i Thrond- 

 hjemsfjorden paa 100 Favne ; derimod Carpenter og Wyville 

 Thomson i det atlantiske Hav paa 300 Favne. 



I. F. Whiteaves har fundet den i Bugten af St. Law- 

 rence paa et Dyb fra 160—200 Favne. Men da den er 

 noget afvigende fra vor, har han opført den som en Va- 

 rietet og kaldt den Pennatula aculeata variet. canadensis. 



of which the exterior row situated near to the base of 

 the leaves, attains a length of as much as 3 Mm. Bet- 

 ween these spines, which are strongly developed zooids, 

 there appear a number of ordinary zooids, as it were 

 dispersed over the polypary, some of them even on the 

 furrow. On the upper part of the ventral surface, the furrow 

 usually disappears, and then the whole surface is thickly 

 covered with zooids, of which those which form spines 

 are the most prominent. 



The middle part of the dorsal surface is naked; and 

 on each side between the bases of the leaves there ap- 

 pear, on the lower part 1, and on the middle and upper 

 part 2 rows and sometimes an incipient 3 r >? row of zooids 

 of which some eveiL go up on the base of the leaf itself. 



The leaves are situated rather far from each other; 

 they are wide at the base, and bear long cells (3—4 Mm,) 

 with strong spicula of which usually 8 project a long way 

 beyond the free margin of the cell. Of these spicula the 

 longest were 2,8 Mm. long, and 0,11 Mm. broad, 



The polyps have one row of red spicula on the 

 aboral surface as well of the tentacles as of their fila- 

 ments (Pinnulæ). 



The zooids are also provided with spicula, especi- 

 ally those in the form of spines, in which the spicula 

 even reach a length of up to 3,3 Mm.; with a width in 

 the middle of 0,16 Mm. 



The ^zooids have as usual two long mesenteric fila- 

 ments, which are prolonged into the fleshy part of the 

 polypary and vary in length from 1,21 Mm. to 2,5 Mm. 



The hypogastric cavity is rather long and is con- 

 tinued into the polypary. 



The axis becomes thinner and thinner in the upward 

 direction and terminates in the form of a hook 15 Mm. 

 from the point of the rachis. It becomes thicker down- 

 wards and retains its thickness down to the lower third 

 part of the stalk, where it again diminishes. At a distance 

 of 10 Mm. from the lower extremity, it forms a bend 

 going then about 10 Mm. upward and attaching itself in 

 an extremely fine point to the sheath. It is in the thickest 

 part 1 Mm. 



The color of the leaves is light red sprinkled with 

 dark red longitudinal stripes. The cells and the ventral 

 margin of the leaf are intensely brown-red. The polyps 

 pale yellowish-red, with an intensely red margin on the 

 aboral surface of the tentacles. The rachis claret-color 

 and the stalk pale yellowish-red. 



Found at Christiansund, where in a single locality it 

 occurred rather abundantly on clay bottom at the depth 

 of 80 — 100 fathoms. Sars reports that he has found it at 

 Christiansund at the depth of 30 — 70 fathoms, at Østeraat 

 in the Throndhjemsfjord in 100 fathoms; while Carpenter 

 and Wyville Thomson have found in the Atlantic ocean 

 in 300 fathoms. 



I. F. Whiteaves has found it in the Gulf of St. Law- 

 rence at the depth of 160—200 fathoms; but as it is 

 somewhat different from ours, he has indicated it as a 

 variety and called it Pennatula aculeata variet. canadensis. 



