å 
Farven. 
Kroppen varierer fra det Graagrønne til det mørkt 
Violette. Den forreste Ende: med Mundskiven og Ten- 
takler er gulhvid. Halen er hvid. Papillen for Udførsels- 
kanalen for Kjonsorganet er stærkt gul paa den violette 
Krop, men næsten hvid, hvor Legemets Farve er graagrøn. 
Findested. 
Station 260. Stat. 261. Stat. 262. Stat. 362. 
Ankyroderma affine, n. sp. 
(Tab. XII. 
Fig. 28—36). . 
Legemet er rut, eylindrisk, smalere mod den forreste 
Ende, der er tvers afskaaren, og forsynet med en hale- 
formig Forlængelse i den bagerste Del. Af de tre Exem- 
plarer, vi fandt, er det største 55”” langt. 
5 Par Længdemuskler, hvoraf hver Muskel er 2.57” 
bred paa Midten af Kroppen, imedens de blive betydelig 
smalere mod begge Ender. Mellemrummet, hvori Kar og 
- Nerve ligger, er paa Midten omtrent 0.5”” bredt, men 
ogsaa dette bliver smalere, jo mere det nærmer sig Lege- 
mets Ender, Fig. 30, a. 
Mundskiven er i Midten forsynet med 15 yderst korte, 
tredelte Tentakler; forresten findes ogsaa hos denne Art 
den for Trochostoma særegne Hjulform. Omtrent 2—3”” 
fra Kroppens forreste Rand, paa Rygsiden, sees en lille 
rund, hvid, lidt eleveret Papille, i hvis Midte findes den 
runde Aabning for Kjønsorganernes Udførselskanal. Paa 
Spidsen af den haleformige Forlængelse sees den runde 
| Kloakaabning, der er omgivet af 5 smaa Kalkpapiller 
(Tender). 
Seet under Loupen er Kroppens Overflade forsynet 
med tætstaaende Papiller, i hvis Midte er en Aabning, 
hvorigjennem Kronerne paa de gjennembrudte Kalknaale 
stikke; desforuden sees, fornemmelig paa Ryggen, flere 
Længderækker af glindsende, stjerneformige Legemer, hvor- 
fra Ankere rage op over Hudens Overflade, Fig. 2 
Disse Rækker strække sig fra Grunden af Haleforlængelsen 
- til henimod Kroppens forreste Rand, Fig. 29. 
Huden er temmelig tynd, fast, halv gjennemsigtig, saa 
at naar Kropshulheden er udfyldt, sees Længdemusklerne 
meget tydeligt, Indvoldene derimod mindre. 
Den bestaar : 
| 
4 
Colour. 
That of the body varies, being either grey-green or 
dark-violet. The anterior extremity, together with the oral 
disk and the tentacles, yellowish-white. Caudiform appen- 
dix white. The papilla of the eferent duct of the genera- 
tive organ vivid yellow with the body violet, but almost 
white when it is grey-green. 
Locality. 
: Stations 260, 261, 262, and 362. 
Ankyroderma affine, n. sp. 
(Pl. XII, figs. 28—36). 
Body rough, cylindric, narrowest at the anterior ex- 
tremity, which is truncate; posterior extremity furnished 
with an elongate caudiform appendage. * The largest of our 
three specimens measured 55”” in length. 
Five pairs of longitudinal muscles; breadth of each 
muscle 2.5”” in the middle of the body, at the extremities 
considerably less. The space occupied by the vessel and 
the nerve about 0.5” broad; but this, too, becomes much 
narrower as it approaches the extremities of the body, 
fig. 30, a. 
The oral disk is furnished in the middle with 15 ex- 
. ceedingly short trifid tentacles; for the rest, the rotate 
form distinguishing Trochostoma is also characteristic of 
this species. About 2”” or 3”” from the anterior margin of 
the body, on the dorsal surface, is seen a small, round, 
white, slightly prominent papilla, having in the centre a 
circular aperture for the eferent duct of the generative 
organ. On the tip of the caudiform appendage is seen 
the round cloacal opening, surrounded by 5 small caleare- 
ous papillæ (dentelli). 
When viewed under a lens, the surface of the body 
is found to be furnished with closely set papillæ, each with 
an opening in the middle, through which protend the co- 
rollæ of the perforate calcareous spicules; moreover, seve- 
ral longitudinal series of lustrous stellate corpuscles are 
also observed, from which anchor-like bodies project 
above the surface of the integument, fig. 29, a. These 
series extend from the base of the caudiform appendage 
nearly to the anterior margin of the body, fig. 29. 
The skin is comparatively thin, firm in texture, and 
semi-translucent, so that when the- perivisceral cavity is 
distended with fluid the longitudinal muscles are distinctly 
