85 
spikler, forstørret. a Krumme, isolerede spicules, magnified: a curved isolated spi- 
Å Spikler; b Spikelhobe. | cules; b groups of spicules. ' 
Tab. I, Fig. 11. Et Tversnit af Huden, forstørret. a Cuti- Pl. I, fig. 11. Transverse section of skin, magnified: a 
cula; > Hpithel; ¢ Slimkjertler; d, d det cuticle; 6- epithelium; c mucous glands; 
Tab. IT, Fie. 12. 
Fig. 17 & 18. 
Tab. ILI, Fig. 26. 
kornede seige Indhold i disse; e, e Binde- 
vævslegemer: jf sammenhobede ' Kalkspiks 
ler: h Radialnerven; 2 Sammenvoxning 
imellem Nervekarret og Nervens ydre 
Side; Å det aabne Nervekar; 7 Bindevævs- 
liste; m detibrede, lyse, fibrillære Lag i 
Nerven; m det smalere. mørke Lag i 
Nerven. 
Den forreste Kropsende, seet fra den 
indvendige Side, forstørret. a Mundskiven; 
b, b Biviets Længdemuskler med Radial- 
nefven; c, 6 ¢ Triviets. Længdemuskler 
med Radialnerven; d Vandkarringen; e 
Stenkanalen; jf (Generationsorganet; g 
Spiseroret;  Diaphragmaet med dets 
Aabninger. 
. Rygpapille med sine Spikler, forstørret. 
Den yderste Del af en Fod med Kalk- 
spikler, forstørret. 
Forskjellige indre Dele, forstørrede. a 
Vandkarringen; 0, b Rygstammerne med 
deres Todeling; c, c, ¢ de trende Grene 
af Sidekarret; d Stenkanalen: e Genera- 
* tionsorganets Udførselsgang; jf (Genera- 
tionsorganet med dets Forgreninger; g 
Spiserøret; 4 Poliske Blære. 
Den yderste Ende af. Stenkanalen, til- 
hørende Elpidia glacialis, Théel. a Kalk- 
. fletning, der omgiver en Del af Endens 
Fæstested, forstørret. 
. Den næynte Fletning, stærkt forstørret. 
Otolither, forstørrede. a Det yderste 
Lag; b rundagtig Fremstaaenhed. 
Forskjelligtformede Kalkfigurer i Mund- 
skivens Hud. 
Kalknet 1 Miunustavens Hud, forstorret. 
Spikelfletninger i Huden, forstørrede. 
. Forskjelligtformede Kalkspikler i Huden, 
forstørrede. 
Forgrenede Kalkspikler, forstørrede. 
Slimeeller, forstørrede. a Halvmaanefor- 
migt Indsnit. 
Schematisk Figur over den indre Bugflade 
af Huden samt en Del af Nervesystemet. 
a, a Tvermuskler; b Fodampuile;.c, c 
Høreblærer; d Radialverve; e Længde- 
muskel med Radialnerve; f, f Muskel- 
baand fra Fodampullen; g en Del af 
Nerveringen; h, h Fodder. 
=P 
(8 fo} 
Pl. II, fig. 
-d, d their viscid, granulous contents; e, e 
corpuscles of connective tissue; f agglome- 
rated calcareous spicules; radial nerve; 
i (connate) connexion .between the nervous 
vessel and the exterior surface of the 
nerve; i the open nervous vessel; I fillets of 
connective tissue; m the broad, fibrillous, 
light-coloured layer in the substance of 
nerve; m the smaller, dark layer. 
Anterior extremity of body, imner aspect; 
magnified: æ oral disk; b, b longitudinal 
muscles of bivium with radial nerve: c, ¢ 
c longitudinal muscles of trivium with ra- 
dial nerve; d water-vascular ring; e sand- 
canal; f generative organ; g cesophagus; 
h diaphragm with its openings. 
Dorsal papilla with spicules, magnified. 
Outermost portion of a sucker with cal- 
careous spicules, magnified. 
Viscera, magnified: æ water-vascular. ring; 
b, b dorsal stems with dichotomous division ; 
c, ¢, ¢ the three branches of the lateral 
vessel; d sand-canal; e eferent duct of 
generative organ; f generative organ with 
its ramifications; g oesophagus; h vesicle 
of Poli. | 
Extremity of sand-canal in Elpidia glacia- 
lis, Théel: å calcareous reticulations, par- 
tially surrounding the terminal attachment; 
magnified. 
The said reticulations highly magnified. 
Otoliths, magnified: @ outermost layer; b 
roundish prominence. 
Calcareous figures of different form in the 
skin of the oral disk. 
Calcareous network in skin of oral disk, 
magnified. 
Spicular reticulations m the skin, - mag- 
nified. 
Caleareous spicules, of different form, in 
the skin; magnified. 
Branching: calcareous spicules, magnified. 
Mucous cells, magnified: @ lunate inci- 
SION. 
Diagram 'of the inner ventral surface of 
the skin and part of the nervous system: 
a, a transyerse muscles; } pedal ampulla; 
c, ¢ auditory vesicles; d radial nerve; e 
longitudinal muscle with radial nerve; f, f 
muscular bands from pedal ampulla; g 
part of the nervous ring; h, h suckers. 
DEG 
