fortil forene de sig og danne en lang Udførselskanal, 
grener hver Stamme sig i mange tynde, 
afvexlende med 15 aflange Fordybninger, 
- forsynet med gjennemborede Papiller 
forreste Rand noget længere, end paa Jeffreysii, men nogen 
anden Forskjel er der heller ikke. 
Med Hensyn til Vandkarsystemet, saa ere Tentakel- 
ampullerne meget lange ligesom hos Jeffreysti, Fig. 30, c. 
Den Poliske Blære er kolbeformig og har en lang Stilk. 
Stenkanalen, Fig. 30, d, er meget lang og besat med 
Kalkfletninger lige til dens Udspring fra Vandkarringen, 
saaledes nemlig, at paa den yderste Halvdel danne Flet- 
ningerne Ringe ligesom hos Troch. Thomsonii. Madrepor- 
pladen danner en liden fremspringende Knop, der er fjernet 
omtrent 1”” fra Stenkanalens Befæstningssted paa den indre 
Flade af Kropsvæggen, og ligner den hos Jeffreysii. 
Kjønsorganerne ere noget forskjellige hos det forskjel- 
lige Kjøn. 
Hos Hannen er Kjønsorganet overordentlig langt, 
naar næsten lige til Kloaken, Fig. 30, e. Det er fæstet 
ved et kort, fortykket Mesenterium til Tarmvæggen, just 
paa det Sted, hvor Mayen gaar over i Tarmen, og bestaar 
af to Hovedstammer, af hvilke den venstre er den korteste: 
som 
løber et langt Stykke ved Siden af Stenkanalen; bagtil for- 
lange cylindriske 
Blindsække. hyoraf flere vare næsten opfyldte af Zoo- 
spermer. 
Hunnens Kjønsorganer ere meget kortere, men dog 
længere end hos Jeffreysii, og forsynet med langt flere 
Blindsække, hvori fandtes en single mere eller mindre 
udviklede Æg, Fig. 28. 
Faryen graagron med hvid Mundskive, Tentakler, 
Generationspapille og Halespids hvid. 
Findested. 
Station 290. 
Slegtskarakter. Ankyroderma. 
Legemet eylindrisk. Den forreste Ende tvers afskaa- 
Mundskiven forsynet med 15 rørformige Forlængelser, 
hvori findes 15 
Den bagerste Ende haleformig 
Kloakaabningen omgiven af 5 Papiller. Huden 
samt særegne Kalk- 
legemer, bestaaende af 5—6 i Stjerneform liggende spatel- 
formede Kalkstave, fra hvis Midte reiser sig et Kalkanker. 
Ingen Fodder. To Tarmappendices (Lungetræer.). 
ren. 
papilformige Tentakler. 
forlænget. 
Den norske Nordhavsexpedition. Danielssen og Koren: Holothurider. 
D 
to a greater extent, and the points on the anterior margin 
may be somewhat longer, than in Jeffreysii; other difference 
there is none. 
As regards the aquiferous system, the tentacular am- 
pullæ are exceedingly long, fig. 30, c. The vesicle of Poli 
is clavate in form, and has a long pedicle. 
The sand-canal, fig. 30, d, is very long, and is fur- 
nished with calcareous reticulations that extend to its 
point of origin on the water-vascular ring, the said reti- 
the outer 
culations exhibiting on half of the stem an 
annular arrangement, as in Trochostoma Thomsonii. The 
madreporic body occurs as a small projecting knob, distant 
about 1”” from the point at which 
webbed to the inner wall of the body, 
in Jeffreysii. 
the sand-canal is 
and resembles that 
The generative organs vary somewhat in the different 
sexes. 
The male has the generative organ exceedingly long, 
reaching almost to the cloacum, fig. 30, e. It is webbed 
by a short, inspissated mesentery to the wall of the intes- 
tine, in the exact spot where the stomach opens into the 
latter, and consists of two stems, that on the left side 
being the shortest; anteriorly, these stems unite to form a 
long eferent duct, which passes for a considerable distance 
alongside the sand-canal; posteriorly, each of the stems 
divides into numerous long, thin, cylindric ceca, several of 
which were full of spermatozoa. 
In the female, the generative organ is much shorter, 
but of greater length, however, than in Jeffreys, and fur- 
nished with a great many more ceca, in which were found 
numbers of ova, more or less developed, fig. 28. 
Ground-colour grey-green; the oral disk, the tentacles, 
the papilla of the generative organs, and the tip of the 
caudiform appendix white. 
Locality. 
Station 290. 
Generic Character: Ankyroderma. 
Body cylindric. Anterior extremity truncate. Oral 
disk furnished with 15 tubular prolations, alternating with 
as many oblong depressions, in which are 15 papillary ten- 
tacula. Posterior extremity caudiform elongate. Cloacal 
opening surrounded by 5 papille. Skin furnished with 
perforate papillæ, and with characteristic calcareous cor- 
puscles composed of from 5 to 6 spatulate calcareous rods, 
arranged in a stellar form, from the centre of which pro- 
tends a calcareous anchor. No suckers. Two intestinal 
appendices (respiratory trees). | 
10 
