69 



medt', fladtrykte i den distale Ende og med sterkt udbrjiet 

 Kant, bæres paa Stilke af forskjellig Længde, der under 

 forskjellig Vinkel og med store, uregelmæssige Mellerarum 

 gaar ud fra Stammen. Stilkene er sammensat af kortere 

 og længere Led. 



Gonosome. Gonangier udgaar fra Riiizocaulomet 

 og findes spredt over hele Kolonien. De er ægformede 

 med en kort rørformig Aabning, og paa deres Overflade 

 sees 6 — 8 langsgaaende Ribber. 5 — 8 mm. lange. 



Jeg henfører denne nye Art til Lafoea, skjønt den 

 i sin Bygning meget lidet ligner de øvrige Arter af denne 

 SLægt. Imidlertid tinder jeg ingen specielle Kjendemerker 

 cfter livilke den bor sættes udenfor Lafoeas Slægtsdiagnose, 

 og anser jeg det ikke for rinieligt at oprctte nogen ny Genus 

 for den. Dens klokkeformige Hydrotheker stiller den, sam- 

 men med L. //randis og L. iiinnata. paa Overgangen til 

 Cavqjcoinlaria, medens dens Rhizocaulom tyder paa Slægt- 

 skab med Lafoea. 



Den blev under Nordh.-E.xp. funden i flere E.\em- 

 plarer paa en Station, og er senere af Konservator A})- 

 IJeJlnf funden ved Moldoen ved Bergen. De fundne Ex- 

 emplarer har en Høido af 5 — 10 cm. 



Samme Sted blev den Sommeren 1898 atter fundet 

 af Dr. Hjort, og denne Gang i meget store Exemplarer. 

 15 — 20 cm. høie. Beskrivelsen af Gonangierne er tåget 

 fra disse. 



Pindested. 164. 



Lafoea pinnata. G. 0. Sårs. 



(Tab. VI, Fio-. 1). 



Trophosome. Hydrocaulus opret. sammensat, med 

 fjærformig Forgrening. Hydrotheker symmetrisk breger- 

 formede, bæres paa en halv-spiraldreiet Stilk, der danner 

 ca. 30" Vinkel med Moderstilken. 



Gonosome. Scapus. De enkelte Gonangier har i 

 den distale Ende tre rorformige Aabninger, der numder ud 

 paa Siden og danner 120" Vinkel med hinanden. 



Denne Art, som tidligere kun er omtalt af G. 0. :< 

 Sårs (97), der fandt endol Exemplarer ved IMosterhavn i 

 Hardanger, blev paa Nordh.-Esp. fundet paa flere Steder |! 

 og i Exemplarer op til 7 cm. hoi. Kun et af disse bærer i 

 Gonangier; de sidder i Klynge paa en af de nederste 

 Grene, og er endnu ikke fuldt udviklede; men paa et af i 

 Prof. Sars'>: Exemplarer fandt jeg en Scapus med fuldt 

 udviklede Gonangier, der alle havde de eiendommelige tre 

 Aabninger i den distale Ende. Ved Bunden af Hydrothe- 

 kerne sees et Diaphragraa. 



Findested. St. 200 og 270. 



flattened at the distal end, and with a very much outward 

 curving margin, borne upon stalles of various lengths, which 

 liranch out from tlie stein at various angles and at wide, 

 irregular intercals. The stalks are composed of long and 

 short joints. 



Gonosome. Gonangia issue from the rhizocaulom all 

 over the colony. They are oviforra with a short tubular 

 opening, and on their surface are seen 6 — 8 longitudinal 

 ribs. Length 5 — 8 mm. 



I refer this new speeies to Lafoea, although it has 

 very little reserablance in its structure to the other speeies 

 of this genus. I cannot, however. find any special distin- 

 guishing features, whicli would placc it outside the generic 

 definition of Lafora : and I see no reason for establishing a 

 new genus for it. Its bell-shaped hydrotiiecæ place it, with 

 L. gramlis and L. pituuda, on the transition to Campatm- 

 laria, while its rhizocaulom points to a relationsliip with 

 Lafoea. 



Several specimens where found during the X. Atlan. 

 Exp. at one station, and it has subsequently been found 

 by Curator Åppellof off Moldoen. near Bergen. The height 

 of the specimens found is from 5 to 10 cm. 



At the same place this speeies was found by Dr. 

 Hjort in the summer 1898, and now in very largo speci- 

 mens, 15 — 20 cm. in height. My description of the go- 

 nangia is tåken from these colonies. 



Loeality. Station 164. 



Lafoea pinnata, G. 0. Sårs. 



(PL Yl, tig. !). 



Trophosome. Hydrocaulus erect, compound, with 

 penniform ramification. Hydrothecæ symraetrically cup- 

 shaped, borne ujjon a half-spirally twisted stalk, which 

 makes an angle of about oO" with the the parent stalk. 



GonoBome. Scapus. Each gonangium has three 

 tubular apertures at its distal end, opening at the side, 

 and forming an angle of 120" with one another. 



This speeies, which has hitherto been mentioned only 

 by 0. (>. Sårs (97), who found a few specimens at Moster- 

 havn in the Hardanger Fjord, was found at several places 

 during the X. Atlan. Exp., the specimens being up to 

 7 cm. in height. Only one of these bears gonangia; they 

 are standing in clusters on one of the lowest branches, 

 and are not yet fully developed. But I found on one of 

 Frof. Sars's specimens, a scapus with fully developed go- 

 nangia. which all bad the eharacteristic three openings at 

 their distal end. A diapliragm is visible at the Ijottom of 

 the hydrothecæ. 



Loeality. Stations 200 & 270. 



