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54
skelbundter-, g Deres Membran; h
Fibrillerne; i Skraastribningen i Fibrillerne;
k Nerven; l Dens Bindevævsskede; m
Bindevævsseptum; n Den indre, brede
Del af Nerven.
Tab. IU, Fig. 4. Et Tversnit af Glans, forstørret, a
Piggens Grunddel; b dens Spids; c
Epithel-beklædningen; d Skeden, der omgiver
Piggen; e Kjertelen; / Epithelet paa
Kjertelkapselens indre Væg; g
Udførsels-gangens Begyndelse; h Dens Fortsættelse
op igjennem Piggen; i Dens Aabning; k
Muskelfibre, der gaa til den indre Flade
af Skedeil; 1 Ringmuskler.
— 5. Et Tversnit. ligeledes af Glans, forstørret.
a Piggens Grunddel; b Dens Spids; c
Epithelbeklædningen; d Skeden; e
Kjertelen ; f Dens Epithel; g Kjertelens
Udfør selsgang ; h Dens Fortsættelse og
Aabning; i Muskler til Skedens indre Flade.
— (3. Tversnit af den bagerste Del af Mund-
hulhedens Hud med de deri fæstede
Tænder, forstørret, a Tandens Grunddel; b
Dens Spids.
— 7. En Tand, stærkt forstørret, a Epithel,
som beklæder Tandens Hulhed; b Tandens
feste Spids.
— 8. Tversnit af den mellemste Del af Mund-
hulhedens Hud med de deri fæstede
Tænder, a Chitinhud; b Epithel.
— 9. Svælghovedet med Spiserøret og den
begyndende Tarm, forstøn-et. a De ydre,
brede Muskler; b De indre smale
Muskler; c Indsnøring paa Spiserøret; d
Muskler, som gaa over i den muskuløse
Membran e, som fæster sig paa Volden f; g
Rummet imellem Indsnøringen paa
Spiserøret og Muskelmembranen; h Muskler;
i overskaarne og opslaaede Retraktorer.
— 10. Tversnit af Tarmens midterste Del.
forstørret. a Tarmfolder med deres
Epi-thelialbeklædning; b Bindevæv; c
Binde-vævslister, der danne Tarmfolderne.
— 11. Tversnit af Huden paa Glans af
Priapulus caudatus, forstørret, a Skeden, som
omgiver Piggens nedre Del; b Aabningen
paa Piggens Spids; c Epithelet. som
beklæder Piggens indre Flade: d
Kjertelen.
— 12. Et Hudparti af Glans, seet næsten
fra-oven, forstørret, a Den noget sammen-
sheath; / fascicles of muscles; g their
membrane; h fibrils; i oblique striature of
fibrils; k the nerve; I its sheath of
connective tissue; m septum of connective
tissue; n inner, broad portion of nerve.
PI. IU. fig. 4. Transverse section of proboscis, magnified: ,
a basal portion of spike; b its pointed
extremity; c epithelial tunic; d sheath
enclosing the spike; e the gland; j epithelium
on the inner wall of the capsule of the
gland; g origin of excretory duct; h its
continuation up through the spike; i its
opening; k muscular fibres protending to
inner surface of sheath; I annular muscles.
— 5. Another transverse section of the probo-
scis, magnified: a base of spike; b point
of spike; c epithelial tunic; d sheath; e
the gland; f epithelium investing it; g
excretory duct of gland; h its continuation
and opening; i muscles protending to inner
surface of sheath.
— 6. Transverse section of the posterior portion
of the dentiferous integument clothing the
cavity of the mouth, showing the teeth
affixed thereto, magnified: a base of tooth;
b point of tooth.
— 7. A tooth, highly magnified: a epithelium
covering the hollow of the tooth; b the
solid point of the tooth.
— 8. Transverse section of the medial portion
of the dentiferous integument clothing the
cavity of the mouth, showing the teeth
affixed thereto, magnified: a chitinous
integument; b epithelium.
— 9. The gullet, together with the oesophagus
and the commencement of the intestine,
magnified: a the broad exterior muscles;
b the narrow interior muscles; c
instric-tion of the æsophagus; d muscles passing
into the muscular membrane (e), which
are attached to the tendinous ridge (f);
g the space between the oesophagus and
the muscular membrane; h muscles; i
retractors, cut through and laid open.
— 10. Transverse section of the medial portion
of the intestine, magnified: a folds of the
intestine, invested with epithelium; b
connective tissue; c fillets of connective
tissue, producing the folds of the intestine.
— 11. Transverse section of skin of proboscis, in
Priapuloides caudatus, magnified: a sheath
enclosing the lower portion of the spike;
b opening at the point of the spike; c
epithelium investing the inner surface of the
spike; d the gland.
— 12. Portion of the skin of the proboscis, viewed
almost from above, magnified: a the sheath,
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