Vi omtalte, at paa Svælgets ydre Flade fæster de 8 
Septa sig. Disse, der udgaa fra den indre Kropsvæg og 
insererer sig paa Svælget, deler den øverste Del af Ga- 
stralhulheden i 8 Kamre. De to dorsale Septa, Fig. 43, f; 
konvergere stærkt henimod Svælget, saa at det dorsale 
Kammer, Fig. 43,,, her bliver temmelig trangt; de ventrale 
Septa, Fig. 43, h, konvergere ikke saameget, derfor er ogsaa 
Bugkammeret videre, Fig. 43,7, men Sidekamrene ere videst, 
Fig. 43, åk. Disse Septa, der ere Forlængelser af Krops- 
væggens indre Bindevæv, dannes af en Bindevævsmembran, 
Fig. 43, 0. 50, a, hvori findes mange fine, forgrenede Erne- 
ringskanaler med sit Epithel. Fra denne hyaline Binde- 
vævslamels ene Flade udgaa listeformige Forlængelser, Fig. 
50, b, paa hvis begge Sider Længdemusklerne ere fæstede, 
Me, 50, eg 
af lignende Celler som de, der beklæde Svælgets ydre Flade, 
og som tidligere er omtalt, Fig. 50, e. Paa Bindevieysla- 
mellens anden Flade sees Tvermusklerne, Fig. 50, d, der 
ligeledes ere overtrukne med fuldkommen lignende Epithel, 
som altsaa tapetserer hele Kammeret. 
udenpaa dette Muskellag er et Epithel, dannet 
Muskelanordningen paa Septa er, som man har seet, 
noget forskjellig fra den, der finder Sted hos Pennatuliderne 
i Almindelighed; thi, saavidt os bekjendt, er der ikke tid- 
ligere iagttaget de listeformige Fremspring paa hvert Sep- 
tums ene Flade, til hvilke Længdemusklerne ere fæstede. 
Disse Fremspring ere saa store, at de endog med en svag 
Loupe kunne sees; men forovrigt er Anordningen den sæd- 
vanlige, nemlig at de -transverselle Muskler paa den ene 
Side vender mod Polypens Dorsalflade, og de longitudinelle 
Muskler paa den anden Side mod Ventralfladen, saaledes 
at Dorsalkammerets Sidevægge, Fig. 43, g, kun har trans- 
verselle Muskler, imedens Ventralkammeret derimod har 
alene longitudinelle Muskler, Fig. 43, 2. 
Fra den nederste Ende af Svælget blive Septa, naar 
de forlade dette, betydelig smalere og gaa nu langs hele 
Væggen af Mavehulheden, Fig. 47, b, under Navn af Sep- 
tula lige ned til dennes Bund, Fig. 47, c. Septula danne 
altsaa paa Mavevæggen 8 stærke, listeformige Fremspring 
med en fri Rand. 
Paa hver Side af Septulum er ligesom paa Septum 
Muskellaget fæstet, paa den ene Side nemlig Længdemusk- 
lerne, Fig. 49, a, paa den anden Tvermusklerne, Fig. 49', a, 
og til den fri Rand er Gastralfilamentet bundet med en 
meget tynd Bindevævsmembran, Fig. 49, 0. 
Den nederste frie, runde Rand af Svælget er tyk, 
ligesom opsvulmet, og her samler de cireulære Muskler sig 
Between the folds ot the gullet, the remains of mulluscous, 
erustaceous, and echinodermatous larvæ were observed, 
also, a great many diatomes, and all these nutritive sub- 
stances were well enclosed in a rich mucous secretion. 
We stated that, the 8 septa are attached to the 
exterior surface of the gullet. They issue from the inner 
wall of the body, mserting themselves in the gullet, and 
divide the superior part of the gastric cavity into 8 cham- 
bers. The two dorsal septa (fig. 43, f), converge, greatly, 
towards the gullet, so that, the dorsal chamber (fig. 43) 
becomes rather narrow, here. The ventral septa (fig. 43, h), 
do not converge so much, and the ventral chamber is there- 
fore also wider (fig. 43,7), but the lateral chambers are the 
widest (fig. 43, k). These septa, which are prolongations of 
the inner connective-tissue of the wall of the body, are formed 
by a membrane of connective-tissue (figs. 43, 7, 50, a), in which, 
is found, many minute nutrient ductiferous ramifications with 
their epithelium. From the one surface of this hyaloid connec- 
tive-tissue lamella, fillet-formed prolongations issue (fig. 50,0) 
to both of whose sides longitudinal muscles are adherent. 
On the exterior of this muscular layer, there is an epithe- 
of similar the 
exterior surface of the gullet, and which have previously 
On the other surface of the 
connective tissue lamella, transverse muscles are seen (fig. 
lium, formed cells to those which cover 
been spoken of (tig. 50, e). 
50, d), which, also, are clothed with exactly similar epi- 
theliunt; and this, consequently, coats the entire chamber. 
The muscular arrangement of the septa is, as will 
that 
because, so far as we are 
ditferent from which is found 
in Pennatulide in general; 
be seen, somewhat 
aware, there has not, previously, been observed, the fillet- 
formed prominence, on the one surface of each septum, to 
which the longitudinal muscles are attached. These prom- 
inences are so large, that they may, even, be observed 
with an ordinary magnifying glass; but, the arrangement, 
otherwise, is the usual one, viz. that the transversal muscles 
of the one side, face towards the polyps dorsal surface ; 
and the longitudinal muscles of the other side, face towards 
the ventral surface, so that, the lateral walls of the dor- 
sal chamber (fig. 43, g) have only transversal muscles; 
whilst, on the other hand, the ventral chamber has only 
longitudinal muscles (fig. 43, 7). 
From the lower extremity of the gullet, at the point 
where they leave it, the septa become considerably nar- 
rower, and then pass along the entire wall of the ventral 
cavity (fig. 47, b), appearing as septula, and extending right 
down to the bottom (fig. 47, c). The septula form, thus, 
on the wall of the stomach, 8 strong fillet-formed prom- 
inences having a free margin. 
On each side of the septulum; as in the case of the 
septum; the muscular layer is so attached, that on the 
one side we find longitudinal muscles (fig. 49, a), and 
on the other side, transverse muscles (fig. 49', a), and 
the gastral filament is secured to the free margin, by a 
very thin membrane of connective-tissue (fig. 49, 0). 
The inferior, free, round margin of the gullet, is thick, 
as if it were tumified, and in this situation, the circular 
