Man vil af ovennævnte Beskrivelse se, at Tarmrøret 
vel danner Slyngninger, men ikke, som hos Bonellia viridis 
(efter Lacaze-Duthiers), danner nogen Spiral omkring den 
lange Alggebeholder (matrix, la poche génitale). 
Hele Mundhulheden var udfyldt af sandholdigt Ler, 
hvori fandtes forskjellige Foraminiferer, Diatomeer, Alger 
og Ascarider. Svælget var tomt; men strax bagenfor dette 
havde det sandholdige Indhold for endel formet sig til ey- 
lindriske, langstrakte Boli med afrundede Ender, 3—4”” 
lange og 1.5—2”” tykke, og jo længere bag i Tarmen, 
desto hyppigere bleve disse, saa at hele den Del, der stræk- 
ker sig fra Ste Tverslynge og til Anus, var ganske opfyldt 
af disse Excrementer. 
De to buskede Organer ere næsten kugledannede, 
3—4”” store, og ere fæstede et paa hver Side af Rectum, 
strax foran Kloakaabningen, Fig. 8, a, a. De have en 
cylindrisk Stamme, der danner et Rør, som ved Udspringet 
er nøgent 1 en Længde af omtrent 1””, Fig. 8, b; men 
fra den øvrige Del af Stammen udgaar en Mængde rør- 
formige Grene, Fig. 9, a, hvorfra udspringer en stor Mang- 
foldighed af lange, smale, slangeformige Rør, Fig. 9, b, b. 
Disse have paa deres frie Ende en tragtformig Aabning, 
som fører ind til Rørets Hulhed, og hvis Rand er forsynet 
med lange Cilier, Fig. 9, c, c, 10. 
I histologisk Henseende dannes de neynte Organer 
væsentligst af de samme Elementer, som Tarm- eller Kloak- 
væggen, hvoraf de egentlig kunne betragtes som en Ud- 
stylpning. Den indre Flade er tapetseret af et rigt flim- 
rende Epithel, der rager md i Hulheden, og hvis Celler 
ere store, dels runde, dels mere eller mindre aflange; de 
have en temmelig stor Kjerne og et yderst finkornet brun- 
grønt Pigment, der ofte er saa tæt og tykt, at det ganske 
skjuler Kjernen, Fig. 12; a, a; 13, b, b.  Epithelet er fee. 
stet til et fibrillært Bindevævslag, hvortil Muskelhuden stø- 
der, hvilken bestaar af Længde- og Ringfibre, som beklædes 
af det flimrende Peritoneum, som altsaa danner den ydre 
til Kropshulheden vendende Flade. Indeni Rørenes Lumen 
iagttoges en hel Del smaa fritliggende runde Legemer, der 
vare noget sammenskrumpede, forsynede enten med Kjerne 
eller nogle faa Moleculer, Fig. 13, c, og som lignede de 
Legemer, Kropsvædsken indeholdt, hvilke tildels vare koa- 
gulerede i Klumper. Hovedstammen aabner sig paa Kloa- 
kens indre Flade imellem et Par af dens stærke Folder. 
Af den her givne Beskrivelse af de buskede Organer, 
vil det sees, at de saagodtsom ganske svare til de, der fin- 
des paa samme Sted hos Bonellia viridis, og som Schmarda 
har antaget for Respirationsorganer, idet han finder dem 
analoge med Holothuridernes. 
Lacaze-Duthiers har underkastet de nævnte Organer 
en nøiere Granskning, og derved paavist, at de først og 
fremst maa betragtes som et Kjertelapparat, som han kal- 
der Analsække (poches anales), imedens han dog opstiller 
som en Mulighed, at de tillige kunne staa i Respirationens 
26 
From the description given above, it will be seen, 
that the intestinal canal does indeed form numbers of eir- 
cumyolutions, but not, as in Bonellia viridis (according to 
Lacaze-Duthiers), a spiral coil round the elongated uterus 
(matrix, la poche génitale). 
The whole of the buccal cavity was distended with sab- 
ulous clay, containing divers Foraminifera, Diatoms, Algæ, 
and Ascaride. The gullet was empty; but immediately. 
posterior to that organ, part of the sabulous contents had 
become moulded into cylindrical, elongated boli, rounded at 
the extremities; and these fecal pellets — 3.4”” long and 
1.5—2”” broad — were found to increase in number, the 
farther they extended down the intestine, the part between 
the Sth transverse circumyolution and the anus being en- 
tirely filled with them. 
The two bunchy organs, almost globular in form and 
3—4”” in diameter, are attached to the rectum, one on 
either side, immediately in front of the cloacal opening, 
fig. 8, a, a. They have a cylindrical trunk, forming a tube, 
which at the point of origin is smooth for about 1”” of 
its' length; but the remaining portion of the trunk sends 
off numbers of tubular branches, from which issue a mul- 
titude of long, slender, serpentine tubes, fig. 9, b; b. These 
tubes have at their free extremity a funnel-shaped aperture, 
leading to the hollow of the tube; the margin of the aper- 
ture is furnished with long cilia, fig. 9. ¢, ¢; 10. 
As regards their histological structure, these organs 
are built up chiefly of the same elements as the intestinal 
and cloacal walls, of which indeed they may be regarded as 
a bossed expansion. The inner surface is clothed with 
vibratile epithelium, projecting into the hollow of the tube; 
and the cells, which are large, and in part round, in part 
elliptical, contain a largish nucleus and a minutely granu- 
lated brownish-green pigment, frequently so dense and opaque 
as to entirely conceal the nucleus, figs. 12, a, a; 13, b, b. 
The epithelium is webbed to a layer of fibrillous connective 
tissue, adjoining the muscular integument, which consists of 
longitudinal and annular fibres invested with the vibratile 
peritoneum; the latter accordingly constitutes the exterior 
surface facing the perivisceral cavity. In the lumen of the 
tubes were seen numbers of free globose corpuscles, some- 
what shrunk or shrivelled, containing a nucleus or a few 
granular molecules, fig. 13, ¢, and which resembled the cor- 
puscles in the perivisceral fluid, whereof part had coagulated 
into clots. The trunk itself opens on the inner surface of 
the cloacum, between two of its prominent folds. 
From the above description, it is obvious that these 
bunchy organs almost perfectly correspond with the organs 
similarly located in Bonellia viridis, which Schmarda held 
to be respiratory tubes, analogous to the “trees” in Holo- 
thurians. 
Lacaze-Duthiers, who subjected these organs to a 
more rigorous investigation, has shown them to be fun- 
damentally a glandular apparatus — anal sacs (poches 
anales), though they may likewise, he thinks, in some way, 
be subservient to respiration. If so, one part would, in 
