Melo, 156 188, 107 
Tab. II, Fig. 
18. 
LG, 
20. 
10. 
12. 
14. 
22. 
tillobende Tarmslynge; h Fortilløbende' 
Tarmslynge; ? Rectum; Å Nervestrængen. 
Tversnit af Huden, forstørret. a Cuticula; 
b Epithellag; ¢ Bindevæyslag; d Ringmusk- 
ler; e Længdemuskler; jf Hudkjertelens . 
Grunddel; g Dens afrundede Spids; Å 
Udforselsgangen; 7 Kjertelens indre’ Epi- 
thelbeklædning. 
Tversnit af Snabelens Hud, besat med 
Hager, forstørret. a Cuticula;: > Hpithel- 
laget; cs Kjertel; d Kjertelens Epithel; e 
Hage. 
Den forreste Del af Snabelen med sine 
Hager, forstørret. 
Hager, seet fra forskjellige Sider. - for- 
størret. 
Endeskjoldet af Aspidosiphon armatum, for- 
størret. å Randplader; 6 Runde, mere cen- 
trale Plader; ¢ 5—6 «Ringe besatte med 
Chitinplader. : 
Det forreste Skjold, forstørret. da Skjol- 
dets Randplader; > Furen imellem disse; 
c, De runde, ophøiede Plader. 
Hagerækkerne paa Snabelen, forstørret. 
Hagerne, forstørret. - 
Et Stykke Hud af Aspidosiphon armatum, 
seet fraoven, forstørret. da 'Porer for 
Kjertlernes Udførselsgang; b Uhitinplader. 
Tversnit af Huden af Aspidosiphon arma- 
tum, forstørret. a OCuticula; b Chitinplade; 
c Bpitbellag; d Hudkjertel; e Dens Ud- 
førselsgang; f Bindevævslag; g Ringmusk- 
ler; 4 Længdemuskler. 
Et Stykke Hud af Aspidosiphon armatum, 
seet fraoven, stærkt forstørret. a Cuticula; 
b Chitinplade; c Aabning for Hudkjerte- 
lens Udførselskanal. 
Den indre Flade af det forreste Skjold 
med dets Muskelapparat, forstørret. a 
Sidemuskler; 6 Centrale Muskler; c De 
‘forreste Muskler. 
Stephanostoma Hanseni, naturlig Storrelse. 
a Krop; 6 Bagenden; c Snabelens Grund; 
d Den forreste Del af Snabelen; e Snabe- 
lens Hals; f Mundskiven med den. cen- 
trale Mundaabning; g Tentakler; 4 Anal- 
aabning. 
Den forreste Ende af Snabelen med Mund- 
skiven og Tentakelkraven, forstørret. a Mund- 
skiven; 6 Mundaabning; c Tentakler: d 
De i Grupper siddende Papiller. 
Jel, Jif, 
— 18. 
fær 
03 
“1 
22. 
testine; g circumyolution passing back- 
wards; h circumyolution passing forwards; 
i rectum; / nervous chord. ve 
Transverse section of skin, magnified: @ 
cuticle; 6 epithelial layer: c layer of con- 
nective tissue; @ annular muscles; e long- 
itudinal muscles; f basal portion vf tegu- 
mentary gland; g rounded extremity of the 
gland; excretory duct; 7 epithelial tunic 
investing inner surface'of gland. 
Transverse section of skin of proboscis, 
studded with chitinous hooks, magnified: 
a cuticle; b epithelial layer; c a gland; d * 
epithelium 'of the gland; e hooks. 
Anterior portion of proboscis, with the 
hooks, magnified. 
Hooks, viewed in different positions, mag- 
nitied. 
Terminal shield of Aspidosiphon armatum, 
magnified: dæ: marginal plates; b round 
plates. more central in position; rings 
covered with chitinous plates. 
Foremost shield, magnified: a the marginal 
plates; 6 furrows between them; c the 
round, prominent plates. 
Series of hooks on the proboscis, magnified: 
. Two of the hooks, magnified. 
Strip of skin of Aspidosiphon armatum, 
viewed from above, magnified: a@ pores for 
the excretory duct of the gland; å chitin- 
ous plates. 
Transverse section of the skin of Aspido- 
siphon armatum, magnified: a cuticle; b 
chitinous plates; ¢ epithelial layer; d teg- 
umentary glands; e excretory duct; f layer 
of connective tissue; .g annular muscles; 
h longitudinal muscles. 
A piece of the skin of Aspidosiphon arma- 
tum, viewed from aboye, highly magnified: 
a cuticle; b a chitmous plate; c opening 
for the excretory canal of the tegumentary 
gland. 
Inner surface of foremost shield, 
muscular apparatus, magnified: åa lateral 
muscles; b central muscles; c foremost 
with its 
muscles. 
Stephanostoma Hanseni, natural size: a 
trunk; b posterior extremity; c base of 
proboscis; d anterior portion of proboscis; 
e neck of proboscis; f buccal disk with the 
buccal orifice in the centre; g tentacles; 
h anal opening. — å 
Anterior extremity of proboscis, with the 
buceal disk and tentacular collar, magni- 
fied: a buccal disk; 6 buccal aperture; c- 
tentacles; d grouped papillæ. 
