29 



Den Mangfoldighed at interseptale Kanin', der opstaa ved 

 de mange Septapar, ere alle opfyldte at' Kjønsorganerne, 

 som ere meget udviklede og indeholde Masser at' Æg. 



Foruden Septalaabningerne (orale Stomata) ved Mund- 

 randen er der ogsaa en Aabning paa Septa af l s Je og 

 2den Orden lige ved deres Befæstning paa den nederste 

 Trediedel at' Kropsvæggen (pedale Stomata). Disse Aab- 

 ninger give Anledning til en rigere Kommunikation imellem 

 Kamrene indbyrdes, hvorved Ernæringsvædsken med Lethed 

 kan overskylle de i Kamrene hvilende Organer. 



Parieto-basilarmuskelen er meget tyk og udbreder sig 

 saavel opad som nedad i stor Udstrækning, og Muskula- 

 turen i selve Podskiven er særdeles stærkt udviklet. 



Findested. 

 Station 275. Et Exemplar. 



Artskarakter. 



Fodskiven rund med en tyk, undulerende Rand og 

 en stærkt foldet Underflade. Kolumnen cylindrisk, 50""" 

 hoi, 40""" bred ved Foden. men smalner at' mod den øverste 

 Rand, som er tentakulær. Den ydre Flade glat, halvt 

 gjennemsigtig. naar Kroppen er udspændt, og forsynet med 

 tine Længdelinier, imellem hvilke sees smau, runde, isolerede 

 Sugevorter (suckers), der især fremtræde paa den overste 

 Del. hvor de næsten ere stillede i Længderækker. Hist 

 og her Cinclides. Mundskiven fint foldet, hvælvet henimod 

 den foldede Mund, der hyppig danner en Konus og har 

 to Gonidiefurer. Tentaklerne retraktile, lange, siddende i 

 4 Rækker; i Iste 12, SO m ere de længste og tykkeste; 

 i 2'len ogsaa 12, noget mindre; i 3die og 4de Række 

 24 i hver og betydelig mindre end de i 2den. Farven: 

 Fodskiven hvitl, dens Underflade svag gulrød. Kroppen 

 nielkehvid. skinnende yderst svagt i det Violette. Suge- 

 vorterne bleg violette. Mundskiven chamoisfarvet med lidt 

 lysere Straaler. Tentaklerne lidt mørkere end Skiven, især 

 ved tieres Grrund. 



Dyret spadserer frit om med stor Lethed uden Til- 

 bøieliehed til at fæste sig. 



The septa of the 4th order are very short. but rather 

 thick, and als.) carry reproductive organs. The multiplicity 

 ul interseptal chambers which arise-in consequence oi the 

 numerous pairs of septa, are all filled with reproductive 

 engans which are well developed ,and contain masses of ova. 

 Besides the septal apertures (oral stomata) at the 

 mal margin, there is also an opening on the septa of the 

 Ist and 2nd order, exactly at their attachment on the 

 lowest third-part of the wall of the body (pedal stomata). 

 These apertures permit of greater freedom of communica- 

 tion between tile chambers, with eaeh otlier. so that the 

 nutritory tluids eau flow freely over the organs lying in 

 the chambers. 



The parieto-basilar muscle is very thick, and distri- 

 butes itself both upwards and downwards to a great 

 extent . and the musculosity of the pedal disc itself is 

 particularly strongly developed. 



Habitat. 

 Station No. 275. One speeimen. 



Specifie characteristies. 



The pedal disc round, with a thick undulating margin, 

 and a strongly folded under-surface. The column cybndri- 

 cal, 50""" in height, 40'"'" in breadth at the base, but becomes 

 narrower towards the uppermost margin, which is tentaeular. 

 The exterior surface smooth, semi-transparent when the 

 body is expanded, furnished with slender longitudinal lines 

 between which, small, round, isolated suckers are observed, 

 appearing especially on the uppermost part, where they are 

 placed in almost longitudinal series. Cinclides are here aud 

 there observable. The oral disc finely folded and arched 

 towards the folded moutli, which frequently forms a cone 

 and has two gonidial grooves. The tentacles retractile, 

 long, seated in 4 series; 12 tentacles in the Ist series, 

 which are the longest and thickest ones ; 12 tentacles in 

 the 2nd series, somewhat smaller in size; in the 3rd and 

 4th series, 24 tentacles in each, but considerably smaller 

 than those of the 2nd series. Colour. Pedal disc white, 

 its under-surface faint yellowish-red. The body niilky- 

 white, shilling with an extremely faint violet tinge. The 

 suckers pale violet. The oral disc light buff colour, with 

 somewhat lighter-coloured -ravs. The tentacles a Little 

 (larker than the disc, especially at their base. 



The animal perambulates freely, with great ease, 

 without any tendency to attach itself to foreign bodies. 



