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Explanation of the Plates.
Forklaring over Figurerne.
Tab. I, Fig. 1. Kolga hyalina i naturlig Størrelse, seet
fra Siden, a Rygkraven; b Analaabningen.
— 2. Kolga hyalina i naturlig Størrelse, seet
fra Bugsiden, a Mundaabning; & Tentakel;
c P’od; d Fodampulle; e Muskelbaand; /
Længdemuskel med den gjennemskinnende
Radialnerve.
— 3. Kolga hyalina i naturlig Størrelse, seet
fra Siden.
— 4. Kolga hyalina i forkortet Stilling.
— 5. Kolga hyalina, seet halvt fra Bug-, halvt
fra Rygsiden.
— 6. Mundskiven med sine Tentakler, lidt for-
størret.
— 7. En Tentakel med sine 5 Lapper, enhver
Lap delt i 3 Flige, forstørret.
— 8. Kolga hyalina, aabnet fra Ryggen; den
forreste Del af Kropshuden slaaet op,
forstørret. a Maven; b Indsnittet mellem
Maven og Tarmen; c 1ste Tarmslynge; d
2den; e 3die Tarmslynge; u Svælgsinus;
g Kloakens Tragtform; h Kloaken; i
Stenkanalen; k dennes Tilfæstning til
Kropshuden ; l Kravens Diaphragma med
dettes Aabninger; m Blodkarringen, der
omgiver Svælget; n Rygkarret ved sit
Udspring fra Ringkarret; o, o Rygkarret’paa
første og sidste Tarmslynge; p
Anastomo-ser imellem Bugkarrets Grene; q
Kjøns-organets Ligament; r, s de to Stammer af
Kjønsorganet; t Udførselsgangen for dette;
f Kloaken.
— 9. En Del af Vandkarsystemet, seet fra Bug-
siden, forstørret, a, a Kalkringens
Stykker, liggende i deres naturlige Leie; b
Vandkarringen; c, c Hovedstammer: d
deres Deling i 2; e, e deres Deling i 3;
f Poliske Blære.
— 10. Et Stykke af Huden med dens Kalk-
Pl. I, fig. 1. Kolga hyalina, natural size, side aspect:
a dorsal collar; b anal opening.
•— 2. Kolga hyalina, natural size, ventral aspect:
a oral opening; b a tentacle; c a sucker;
d pedal ampulla; e muscular band; / one
of the longitudinal muscles with radial
nerve shining through.
— 3. Kolga hyalina, natural size, lateral aspect.
— 4. Kolga hya!ina, foreshortened.
— 5. Kolga hyalina, partly ventral, partly dor-
sal aspect.
— 6. Oral disk with tentacles, slightly magnified.
— 7. A’ tentacle with its 5 lobes, each lobe
divided into 3 lobules; magnified.
— 8. Kolga hyalina, opened dorsally ; anterior
part of integument folded back: magnified:
a ventricle; b incision between the
ventricle and the intestine; c 1st convolution
of intestine; d 2nd; e 3rd; u pharyngeal
sinus; g funnel-shaped aspect of cloacum;
h cloacum; i sand-canal; k attachment of
latter organ to skin of body; I
diaphragm of collar with the openings; m ring
of blood vessels encircling oesophagus; »
dorsal vessel at point of origin from the annular
vessel; o, o dorsal vessel on first and last
convolutions of the intestine; p anastomosing
branches between the dorsal and ventral
vessels; q ligament of generative organ; r,
s the two stems of the generative organ;
t eferent duct from the latter ; / cloacum.
— 9. Part of the aquiferous system, ventral
aspect; magnified: a, a segments of
calcareous ring in situ; b water-vascular ring;
c, c its principal stems; d their
dichotora-ous, e, e their trichotomous division; /
vesicle of Poli.
— 10. A piece of the skin with its calcareous
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