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79
til venstre; 4, 5, 6, dorsal-laterale
Polyper; 7, laterale Polyper til høire.
Tab.VIII, Fig. 28. Schematisk Fremstilling af Polypornes
Stilling paa lia,ellis af Umbellula encrinus
No. 12, seet ovenfra; "Bugen fortil, a,
skedefonnet Udvidning; b, c,
dorsal-laterale Polyper i yderste Række. 1 *,
Terminalpolyp; 1. 1,
eentral-dorsalePolyper. 2, 3, 4. 5, dorsal-laterale Polvper;
(i. laterale Polyper til høire Side. 7, 8. 9,
10, dorsal-laterale Polyper; 11, laterale
Polyper til venstre Side.
— 29. Bægerformet Rachis med lancet formede
Zooidefelter, samt den øverste Del af
den skedeformige Udvidning, noget
for-storret.
— 30. Et Tversnit af den midterste Del af
den skedeformige Udvidning, noget
for-storret. a, Axen; b, Ventralka nalen;
r. høire Sidekanal; d, Dorsalkanalen;
e, venstre Sidekanal; J, Coenenchymet
pai Dorsalsiden med sine Kanaler; g,
Coenenchymet paa Ventralsiden; h, et
listeforniigt Fremspring i
Ventralka-lialen.
— 31. Tversnit af den øverste Del af den
skedeformige Udvidning, forstørret, a,
Ventralkanal; b, Dorsalkanal; c, c,
Sidekanalerne udvidede mod Dorsalfladen;
d, Deling af Septa, hvorved store
Tver-kanaler dannes.
— 32. Størstedelen af den bulbøse Del, seet
fra Ventralsiden, naturlig Størrelse, a,
den bagerste Længdefold af det
ventral-laterale Septum; b, clen forreste
Længdefold af samme Septum; c, det brede
Belte, dannet af de to forreste
Længde-folder af det ventral-laterale Septum;
d, Bindevævstraade; e, Aabninger paa
CoenenchymetS indre Væg; f, den
fortykkede Bindevævslamel paa den ydre
Flade af Skedens ydre Membran’; g,
Udskjæringer og Indrids i samme.
Tab. IX, Fig. 33. Den nederste Ende af Stokkens bulbøse
Del, aabnet fra Ventralsiden, naturlig •
Størrelse, a, den bagerste Fold af
(let ventral-laterale Septum, dens
Til-hæftning udad til Coenenchyinets indre
Væg og indad til Axen; b, den ydre
Flade af Axens Skede.
— 34. Den nederste Ende af Bulbus, aabnet
polyps. 3, Left hand lateral polyps. 4,
5, 6, Dorsolateral polyps. 7, Right hand
lateral polyps.
PI. VIII, flg. 28. Outline representation of the position of
the polyps on the rachis of Umbellula
encrinus, No. 12; superior aspect. The
venter facing anteriorly, a, The
sheath-formed dilation, b, c, Dorso-lateral
polyps of the exterior series. 1 *,
Terminal polyp. 1,1, Centro-dorsal polyps.
2, 3. 4, 5, Dorso-lateral polyps; 6, Right
hand lateral polyps, 7, 8, 9, 10,
Dorsolateral polyps. 11,1 jcft hand lateral polyps.
— 29. Chalice-formed rachis, with lanceolate
zooidal areas; also, the superior portion
of the sheath-formed dilation; somewhat
magnified.
— 30. Transverse sectiona l aspect of the mesial
portion of the sheath-formed dilation;
somewhat magnified, a, The axis, b, The
ventral canal, c, The right lateral canal.
</, The dorsal canal, e. The left lateral
canal. J, The sarcosoma of the dorsal
side with its canals. g, The sarcosoma
of the ventral side. //. A fillet-formed
prominence in the ventral canal.
— 31. Transverse sectional aspect of the superior
portion of the sheath-formed dilation;
magnified, a, The ventral canal, b, The
dorsal canal, c, c, Lateral canals, dilated
towards the dorsal surface, d, Division
of septa, by which large transversal
canals are formed.
— 32. Ventral aspect of the greater part of
the bullions portion; natural size, a,
The posterior longitudinal fold of tin;
ventrolateral septum, b, The anterior
longitudinal fold of the same septum,
c, The broad band formed by the two
anterior longitudinal folds of the
ventrolateral septum. d, Connective-tissue
filaments. e, Apertures in the inner
wall of the sarcosoma. /’, The
tumefied connective-tissue lamella, on the
outer surface of the exterior membrane
of the sheath, g, Carvings and
Mayings of the same.
Pl. IX, fig. 33. The inferior extremity of the bulbous
portion of the stalk, dissected from the
ventral side; natural size, a, The
posterior fold of the ventrolateral septum;
its attachment, outwards, to the inner
wall of the sarcosoma, and inwards, to
the axis, b, The exterior surface of
the sheath of the axis.
— 34. The inferior extremity of the bulb,
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