Svælget, Fig. 6, 7, i Dybden og lober bagtil over venstre 
/Kggebeholder, hvor det tiltager temmelig betydeligt 1 Tyk- 
kelse, Fig. 14, b, c. Herfra løber det hen til den venstre 
horizontale Tarmslynge, Fig. 14, d, paa dennes Rygflade, 
hvortil 
Rygmesenteriet; naar det er kommet et Stykke bag paa 
Tarmslyngen, deler det sig i 2 Hovedstammer, Fig. 14, e, 
hvoraf den ene nu følger Tarmrørets Rygflade langt bagtil, 
hvor det synes at ophøre, efterat have forladt den 5te Tver- 
slynge. Karret er overalt tæt bundet til Tarmen, og af- 
giver hist og her enkelte Grene til denne; hvorvidt disse 
igjen fordele sig og danne Anastomoser, kunne vi ikke af 
gjøre, da vi ikke have fundet noget saadant. 
Den anden Hovedstamme deler sig derimod i mange 
Grene, som igjen forgrene sig og danne ligesom et bredt 
Belte, der dækker næsten hele Tarmens Rygflade, idet disse 
mangfoldige Smaagrene, som ere bundne sammen ved et 
tyndt Bindevæv, gaar over mod Bugtfladen, Fig. 14, g, og 
træffe her paa lignende Smaagrene fra Bugkarret, hvormed 
de synes at forene sig. Disse Karbundter ere fæstede til 
Tarmen, have en skidden gulhvid Farve, ere samlede et 
Par Millim. brede og 4—5”” lange. 
Bugkarret er tykkere end Rygkarret, løber paa den 
horizontale Tarmslynges Bugside, Fig. 14, h, hvor det og- 
saa deler sig 1 to Hovedstammer, hvoraf den ene ligesom 
ved Rygkarret løber langs Tarmens Bugflade bagtil, hvor 
den ender omtrent paa samme Sted, som Rygkarret — kun 
paa Tarmens Bugside, Fig. 14, 7. Den anden Hovedstamme, 
Fig. 14, k, forgrener sig paa samme Vis som Rygkarret, 
og hjælper til at danne den føromtalte Karudbredning. 
> 
Fortil løber Bugkarret lidt tilhgire, Fig. 14, I, 15,0, 
efterat have afgivet en stærk Gren til det forreste Parti af 
Tarmrøret og Svælget, Fig. 15, c, en Gren, der gaar bag- 
til langs Nerven, Fig. 15, d, og endelig en Gren, der gaar 
over paa en anden Tarmslynge, ig. 15, e. Naar det har 
afgivet disse Grene, løber det lidt i Dybden, krydser sig 
med Rygkarret, gaar nu langs Nerven, imellem begge Ægge- 
beholderne, Fig. 14, m, og fortsætter sit Lob paa Mund- ~ 
hulhedens ydre Bugflade indtil dennes forreste Ende, strax 
bagenfor Mundaabningen, hvor det deler sig i to Grene, 
Fig. 15, g, der omgive Spiserøret, for, efter alt hvad vi 
kunde se, at forene sig med Rygkarrets tvende Grene, 
hvorved en Ringkanal fremkommer. 
Den venstre Gren er temmelig tynd; men den høire 
udvider sig strax, Fig. 15, h,'og fra denne Udvidning gaar 
et tykt Kar lidt bagover, bliver et kort Stykke smalere, 
Fig. 15, 2, og taber sig i et stærkt muskuløst, aflangt, æg- 
formigt, hult Legeme (Hjerte?), der var opfyldt med Blod 
og flotterede frit i Kropshulheden, Fig. 15, &. Fra Ring- 
kanalen gik flere korte Grene ind imellem Hudens Muskellag. 
det er bundet ved Bindevævstraade ved Siden af 
28 
becomes almost straight, passes under the gullet, at some 
depth beneath it, fig. 6, x, and then protends backward 
across the left uterus, where it increases considerably in 
thickness, fig. 14, b,c. Here it makes for the left horizontal 
circumyolution of the intestine, fig. 14, d, to the dorsal sur- 
face of which it is webbed by membranous filaments of connec- 
tive tissue, alongside of the dorsal mesentery; it now passes 
some distance back on the said eireumvolution, and then 
divides into 2 trunk-like stems, fig. 14, e, one of which 
protends far back along the dorsalsurface of the intestinal 
canal, where, after quitting the 5th transverse circumvolu- - 
tion, it apparently terminates. The vessel is closely webbed 
to the intestine, to which it sends off every here and there 
a few branches; but whether these branches also ramify, 
forming anastomoses, we are unable to state. 
The other trunk-like stem divides into a number of 
branches, which ramify in turn, and form, as it were, a 
broad cincture, covering almost the whole dorsal surtace of 
the intestine; for these numerous branchlets, which are 
webbed together by a thin connective membrane, stretch 
across to the ventral surface, fig. J4, 7, meeting there similar 
branchlets from the ventral vessel, with which they appa- 
rently unite. These vascular fascicles, dirty yellowish-white 
in colour, are attached to the intestine, and measure collec- 
tively about 2”” in breadth and 4—5”” in length. 
_ he ventral vessel, which is thicker than the dorsal, 
protends along the ventral surface of the horizontal circum- 
volution of the intestine, fig. 14. h, where it likewise di- 
vides into 2 trunk-like stems, one of which passes backward, 
as does that of the dorsal vessel, along the ventral surface 
of the intestine, where it terminates in the same place 
about as the dorsal vessel, — but on the ventral surface of 
the intestine, fig. 14, 7. The other trunk-like stem, fig. 14, 
k, divides in the same manner as the corresponding stem 
of the dorsal vessel, and helps to form the aforesaid vas- 
cular expansion. ; 
Anteriorly, the ventral vessel swerves a little to the, 
right, fig. 14, 1; 15, b, after sending off a thick branch to 
the anterior portion of the intestinal canal and the gul- 
let, fig. 15, ¢; a branch protending backwards along the 
nerve; and a branch passing over to the 2nd circum- ° 
volution of the intestine, fig. 15, e. It now runs on at 
some depth, intersecting the dorsal vessel, then strikes off 
along the nerve, between the two uteri, fig. 14, m, and, 
continuing its course along the outer ventral surface 
of the buccal cavity to the anterior termination of the 
latter, divides into two branches, fig. 15, g, which encom- 
pass the cesophagus, and unite, so far as we could dis- 
tinguish, with the two branches from the dorsal vessel, 
forming. an annular canal. 
The left branch is comparatively thin, but the right 
one immediately expands, fig. 15, h, and from this expan- 
sion issues a thick vessel, which, after passing backwards 
a little, becomes for a short space somewhat narrower, fig. 
15, 7, and then coalesces with an exceedingly muscular, 
oblongo-ovate, hollow body (heart?), filled with blood, and 
floating freely in the perivisceral cavity, fig. 15, Å. 
