& 
Ankyroderma* Jeffreysii, n. g., n. 
Tab. X, Fig. 12—15. Tab XI, XII. 
sp. 
Legemet. cylindrisk, successivt afsmalnende mod begge 
«Ender med en yderst ru Overflade, der ved de 5 Par 
Længdemuskler er afdelt i 5 Felter. 2 
Den forreste Ende er tvers afskaaren, og i Midten 
af Mundskiven, Fig. 13, sees den runde Mundaabning, der 
er stærk foldet paa langs, naar den er sammentrukket. 
Den indre Del af Mundskiven er glat og lidt hvælvet, Fig. 
13, a, den ydre Del dannes af 15 rørformige Forlængelser, 
der ere.bredere udad, smalere indad, Fig. 13, b, og imel- 
lem hvilke sees 15, omtrent 0.57” lange, 3delte Tentakler. 
Fig. 13, c. 25. Strax bagenfor den forreste Kropsrand, 
paa Rygsiden og omtrent midt imellem de to Længde- 
muskler, findes en stor, enten graalighvid, eller gulagtig frem- 
ragende Papille, i hvis Midte sees en rund Aabning for 
Kjønsorganets Udførselskanal, Fig. 12, Fig. 13, d. 
Kroppens bagerste Ende har en temmelig lang hale- 
formig Forlængelse, paa hvis Spids findes den runde Kloak- 
aabning, omgivet af 5 Papiller (Tender), Fig. 12, 14. 
Legemets Størrelse varierer noget, i Almindelighed er 
det 40”” langt, 18”” bredt paå Midten: men vi have to 
Exemplarer, der have en Længde af indtil 75””, og en 
Bredde af 28”m, 
Huden er paa yngre Exemplarer tynd, og, naar den 
er udspændt, halv. gjennemsigtig, uden dog at Indvoldene 
tydelig kunne sees; paa ældre Dyr er den fast, næsten 
læderagtig og aldeles uigjennemsigtig, $aa at neppe Længde- 
musklerne kunne skimtes. Dens ydre Flade, seet under 
Loupen, er overalt forsynet med smaa runde Papiller, i 
hvis Midte er en Aabning, hvorigjennem en Kalkstav stik- 
ker frem, og imellem disse Papiller iagttages hist og her 
smaa stjerneformige Legemer, der dannes af et lidt ophøiet 
Centrum, fra hvilket udgaar straaleformigt 5—6 Kalknaale. 
Huden har som sædvanligt en glasklar, strukturløs, 
Cuticula, Fig. 24, a, et cellerigt Epithel, Fig. 24, b, og: 
den egentlige Corium, bestaaende af fibrillært Bindevæv. 
Fig. 24, c, indenfor hvilket Muskellaget med den flimrende 
Peritonealbeklædning findes, Fig. 24, d. 
Muskellaget bestaar af Tver- og Længdemuskler. 
Tvermusklerne, Fig. 15, a, danne en sammenhængende Hud, 
der er afbrudt ved Længdemusklerne. Disse ere 5 Par. der 
ere 4—5"”” brede, med et Mellemrum af 1's Bredde, 
Iie, NB, 0, 
Bindeveevslaget (Corium) er meget rigt paa forskjellige 
Slags Kalklegemer, der optræde under tre Hovedformer. 
De smaa, runde eller elliptiske ere i størst Mængde til- 
stede, og sædvanligvis leirede i Grupper, Fig. 24, e, — - 
1 
ayxvea — Anker, og S:ppx — Hud. 
67 
tudinal muscles. 
Ankyroderma* Jeffreysii, n. ¢. 
Pl. X, figs. 19—15; PI. XT, XII. 
jo Sjø 
Body =eylindrie, 
extremities, 
tapermg gradually towards both 
exceedingly rough surface, divided 
by the 5. pairs of longitudinal muscles into as many 
sections. 
Anterior extremity truncate. In the middle of 
the oral disk, fig. 13, is seen the round oral aperture, 
which, when contracted, exhibits deep longitudinal folds. 
The inner portion of the oral disk is smooth and _ slightly 
arcuate, fig. 13, a; the outer portion consists of 15 tubular 
prolongations, broader externally, narrower internally, fig. 13, 
b, and between which are seen 15 trifid tentacula, about 
0.5" long, figs. 13, c; 25. Immediately posterior. to the 
anterior margin of the body, on the dorsal surface and about 
midway between the two longitudinal muscles, occurs a large 
projecting papilla, partly greyish-white, partly yellowish, 
in the centre of which is seen a round opening, for the. 
eferent duct of the generative organ, figs. 12; 13, d. 
The posterior extremity of the body has a compara- 
tively long, caudiform appendage, on the tip of which is 
seen the circular cloacal opening, surrounded by 5 papille . 
(teeth, dentelli), figs. 12; 14. 
The body varies in size, being however in most indi- 
viduals 40”” long and 18”” broad in the middle; but we 
have in our possession two specimens with a length of 75” 
and a breadth of 28”, a 
The skin in young examples is thin and, when much: 
stretched, semi-transparent; the viscera cannot however be 
distinctly seen. In mature individuals, it is firm, almost 
coriaceous in texture, and quite opaque, the longitudinal 
muscles even being with difficulty discerned. Its outer 
surface, when viewed under a lens, appears everywhere — 
furnished with small round papille, having in the centre 
an aperture, through which protends a calcareous rod; and 
with an 
between these papilla are seen every here and there mi- 
nute stellate corpuscles, consisting of a slightly elevated 
centre, from which radiate 5 or 6 éalcareous spicules. 
Ås is commonly the case, the skin consists of a cry- 
stalline structureless cuticle, fig: 24, a; a cellular epithe- 
hum, fig. 24, b, and the corium, composed of fibrillous 
connective tissue, fig. 24, ¢, under which extends the muscular 
layer with its vibratile peritoneal tunic, fig. 24, d. 
The muscular layer is composed of transverse and 
longitudinal muscles. The transverse muscles, fig. 15, a, con- 
stitute a continuous integument, intersected by the longi- 
The latter, of which there are 5 pairs, 
have a breadth of 4”—5”", that of the space between 
each pair being 1”, fig. 15, b. 
Throughout the layer of connective tissue (corium) occur 
in great abundance various kinds of calcareous corpuscles, . 
comprised under three typical. forms. The first is either 
round or elliptic, and the corpuscles belonging to this 
1 gyxvex, anchor; 8:pp.%, skin: 
