Man kan gjøre sig et Begreb om hvor tynd Tarmens 
Vægge var, naar vi sige, at det var en Stund, vi troede 
der ingen Tarm var, da denne var løsreven fra Rectum; 
men at hele Dyrets Bagdel udgjorde en Sek for Excre- 
menterne. Ved sterk Loupe kunde man dog imellem hver 
Bolus se en florfin Hinde, der var Tarmvæggen. 
De særegent formede Excrementer dannes sandsynlig- 
vis idet Føden passerer Spiserørets bagre udvidede Del 
(Maven);, thi lige der hvor denne gaar over i den egentlige 
Tarm laa en Bolus, imedens der i Spisergret kun var den 
lerholdige Sand, hvori fandtes en Mængde Foraminiferer. 
Centralnervestrængen løber som en fin gulhvid Traad, 
Fig. 4, 0, langs den uigjennemsigtige forreste Kropsdels 
Midte, under Spiserøret, og følger dette til dets forreste 
Ende, hvor den slaar sig om Svælget og sandsynligvis dan- 
ner en Ring. Paa denne Vei afgiver den mange Sidegrene 
til Spisergret og Huden. 
Det er ikke alene Hudens Muskler, der forsynes med 
(årene, men mange af disse forlænge sig igjennem Binde- 
vævet ud i Epithelet lige under «Cuticula, hvor de fine 
Ender dels tabe sig imellem Cylindercellerne, dels gaa over 
i aflange, næsten kølleformige Legemer, der ere forsynede 
med en stor Kjerne, og som vel maa betragtes som Or- 
ganer, der staa i Følelsens Tjeneste, Fig. 5, f. Disse fine 
peripheriske Nervegrene danne i deres Løb smaa ganglie- 
formige Knuder, som have en stor Kjerne omgivet af Proto- 
plasma, Fig. 5, g, og fra hvilke udgaa snart en, snart flere 
Grene, der hyppig anastomosere med tilsvarende Grene fra 
andre Ganglier. — | 
Det er ikke lykkedes os, trods al anvendt Møie, at 
forfølge Centralnervestreengen længere bag i den glasklare 
Sæk, eller paa Tarmen, ihvorvel det er sandsynligt, at den 
langs Sækkens indre Flade strækker sig bag imod Rectum. 
A 
_ Kjønsorganerne bestaa hos vort Individ af Æggestok- 
ken og en ÆMøggebeholder (Uterus). Æggestokken ligger 
langs Centralnervestrængen, Fig. 4, c, og tager sin Begyn- 
delse et Par Millimeter bagenfor Mundaabningen. Den 
dannes egentlig af en Fold af det Mesenterium, som binder 
Svælget til Kropsvæggen og ender noget bagenfor den glas- 
klare Kropsdels Begyndelse. 
Æggestokken er sammensat af en stor Mængde næsten 
pæreformige Follikler, Fig. 8, der bestaa af en klar Mem- 
bran, hvori sees Bindevævslegemer. Fig. 8, a, og hvis indre 
Flade er beklædt med store Celler, Fig. 8, b. I den sma- 
lere Del af Follikelen saaes et begyndende Æg, omgivet 
ligesom af en Krands Celler. Vi saa kun Antydninger til 
Æg i Folliklerne. 
Efter alt at dømme foregaar Alggets Udvikling paa 
37 
It will give some idea of the extreme thinness of the 
intestinal walls, that we were actually im doubt at first 
whether there was an intestine (it had been detached from 
the rectum), conceiving the whole posterior portion of the 
animal to constitute a receptacle for the fæces. With a 
strong magnifier could be just. distinguished between the 
boli a gauzy pellicle, — and this was the wall of the 
intestine. 
Probably the peculiar form into which the feces are 
moulded, may be traced to the passage of the food through 
the posterior distended portion of the æsophagus (the stomach) ; 
for, exactly where that organ passes into the intestine lay 
a bolus, the contents of the oesophagus consisting exclusively of 
argillaceous sand, in which were numbers of Foraminifera. 
The central nervous chord protends as a slender 
yellowish-white filament, fig. 4,0, along the middle of the an- 
terior opaque portion of the body, underneath the cesophagus, 
accompanying that organ to its anterior extremity, where 
it winds round the gullet, forming probably a ring. On 
its course it sends off numerous subsidiary branches to the 
æsophagus and the skin. 
Not only is it the muscles of the skin that are fur- 
nished with branches, — many of these offshoots, piercing 
the connective tissue, pass on into the epithelium, immediate- 
ly beneath the cuticle, where their delicate extremities 
either coalesce with the cylindric cells, or expand into 
elliptic, more or léss clavate corpuscles, furnished with a 
large nucleus, and which may, we think, be regarded as 
organs subservient to the sense of touch, fig. 5, f. These 
slender peripheral nervous branches form on their course 
numerous ganglionous nodules, with a large nucleus embed- 
ded in protoplasma, fig. 5, g, and from which proceed one 
or more branches, that frequently anastomose with corres- 
ponding branches from other ganglions. 
We have failed, notwithstanding a most careful mi- 
croscopic examination, to trace the central nervous chord 
farther back in the hyaline sac, or on the intestine, though 
it probably passes along the inner surface of the sac to- 
wards the rectum. ; 
The generative organs consist in our specimen of the 
ovary and one uterus. The ovary protends along the 
central nervous chord, fig. 4, ¢, and takes its origin a 
millimetre or two posterior. to the buccal aperture. It 
consists properly of a fold of the mesentery that webs 
the gullet to the wall of the body, and terminates a little 
posterior to the commencement of the hyaline portion of 
the body. 
The ovary is built up of large numbers of almost 
pyriform follicles, fig. 8, consisting of a translucent membrane, 
in which are seen corpuscles of connective tissue, fig. 8, å, 
and whose inner surface is covered with large cells, fig. 8, b. 
In the narrower portion of the follicle, was seen a rndi- 
mentary egg, surrounded by a cincture, as it were, of cells. 
We saw none but incipient ova in the follicles. 
Judging from analogy, there is every reason to believe 
