Lappe. Fra dets forreste Del udgaar til hver Side 
og noget opad en kort og tyk Nervestamme, som er 
Synsnerven. Efterat vere traadt hen mod den 
nedre Flade af Giet, oploser den sig i talrige diver- 
gerende Grene (se Fig. 7), hvoraf hver enkelt for- 
binder sig med et tilsvarende Synselement. Fra 
Midten af Hjernegangliets forreste Ende passerer en 
temmelig sterk Nervestamme lige fortil og omgiver 
med sin gangliost opsvulmede Ende det enkle ie 
bagtil (se Fig. 5). Hvor Nerverne-for Folerne ud- 
springer, har det ikke veret mig muligt at se, men 
der er Rimelighed for, at deres Udspring forholder 
sig som hos Branchipodiderne. Bagtil udgaar fra 
Hjernegangliet 2 lange Commissurer, der omgiver 
Spiseroret og nedentil forbinder sig med det Iste 
Ganglion i Buggangliekjezden. Denne sidste (se Fig. 
9, 10, 11) bestaar af en stor Mengde Ganglier sva- 
rende til det store Antal Fodder, og er idethele be, 
tydelig sterkere udviklet end hos Branchipodiderne, 
ligesom den ogsaa viser et temmelig forskjelligt Ud- 
seende, noget nermende sig til det hos Phyllocari- 
derne. Som hos disse, ligger Ganglierne (se Fig. 9) 
meget tet sammen, om de end er tydeligt skilte 
baade ved Lengde- og Tvercommissurer. Af de 
sidste findes, som hos andre Phyllopoder, 2 for hvert 
Par Ganglier, og mellem dem er der en meget liden, 
tvert oval Aabning, medens der mellem Leengde- 
commissurerne er et storre, paa langs ovalt Mellem- 
rum. Fra hvert Ganglion udgaar til Siden 2 sterke 
Nervestammer, hvyoraf den forreste strax deler sig i 
2 Grene; men angaaende disse Nervestammers videre 
Forlob har jeg ikke kunnet skaffe mig fuld Klarhed. 
Bagtil bliver Gangliekjeden (se Fig. 10, 11) gradvis 
smalere og de enkelte Ganglier tettere sammen- 
trengte, saaat Commissurerne mellem dem yanske- 
ligt adskilles. Den ender i en stump Spids paa det 
Sted, hvor de sidste Par rudimentzre Fodder findes. 
Fra denne bagerste Del af Buggangliekjeden udgaar 
Nerverne for Halen; men heller ikke om disses For- 
lob har jeg kunnet skaffe mig et klart Begreb. 
Ovarierne (Tab. XIII, Fig. 1, 2, ov) repreesen- 
teres af 2 temmelig volumingse og sterkt lappede 
Organer, der strekker sig langs Siderne af Tarmen 
igjennem Storsteparten af den fodberende Del af 
Kroppen. De munder hvert med en kort Adgleder 
ved Basis af 11te Fodpar, og indeholder et indre 
Hulrum, der staar i direkte Forbindelse med Ag- 
lederen. Undersoges et Stykke af de udpreparerede 
Ovarier under Mikroskopet, vil man finde, at ethvert 
sig udviklende Ag er indesluttet i en Follikel, der 
rager frem fra Ovariets Overflade i Form af en af- 
rundet, mere eller mindre fremspringende Blere. 
Man finder paa samme Stykke Ovarium Aig i alle 
Udviklingsstadier, fra overordentlig smaa, kun ved 
78 
found in the latter. From the anterior part there 
issues on each side, going a little upwards, a short, 
thick nerve-stem, which is the optic nerve. After 
advancing towards the lower surface of the eye, it 
is resolved into numerous divergent branches (see 
fig. 7), each one of which unites with a correspond- 
ing visual element. From the anterior end of the 
cerebral ganglion, a tolerably strong nerve-stem 
passes forwards and surrounds posteriorly, with its 
ganglionic swollen end, the ocellus (see fig. 5). It 
has not been possible for me to see where the 
nerves for the antenne originate, but it is probable 
that their origin is the same as in the Branchipo- 
dide. \From the cerebral ganglion, posteriorly, run 
two long commissures, which encircle the esophagus, 
and unite below with the first ganglion in the ven- 
tral ganglion chain. The latter (see figs. 9, 10, 11) 
consists of a considerable number of ganglia corres- 
ponding to the large number of legs, and is in the 
whole, much more highly developed than in the 
Branchipodide, exhibiting too, a rather different ap- 
pearance, somewhat approaching that of the Phyllo- 
caride. As in that group, the ganglia (see fig. 9) 
lie very close together, although distinctly separated 
both by longitudinal and transverse commissures. 
Of the latter there are, as in the other Phyllopoda, 
two to each pair of ganglia, and between them 
a very small, transversely oval opening, while be- 
tween the longitudinal commissures, there is a larger, 
longitudinally oval space. From each ganglion there 
issue laterally 2 strong nerve-stems, the anterior of 
which immediately divides into 2 rami; but concer- 
ning the farther course of these nerve-stems, I have 
been unable to ascertain anything clearly. Poste- 
riorly, the ganglionic chain (see figs. 10,11) becomes 
gradually narrower, and the several ganglia more 
crowded, so that the commissures between them are 
difficult to distinguish. It ends in a blunt point at 
the place where the last pair of rudimentary legs are 
found. From this posterior part of the ventral 
ganglion chain issue the nerves for the tail, but in 
their case also, I have been unable to obtain any 
clear idea as to the course they take. 
The ovaries (Pl. XIII, figs. 1, 2, ov) are repre- 
sented by 2 rather voluminous and much lobed or- 
gans, extending along the sides of the intestine 
throughout the greater part of the body. They each 
open by a short oviduct at the base of the 11th 
pair of legs, and contain an inner cavity, which is 
in direct communication with the oviduct. On exa- 
mining a portion of the dissected ovary under the 
microscope, it will be seen that each of the eggs 
undergoing development is enclosed in a follicle, 
which projects from the surface of the ovary in the 
form of a rounded, more or less projecting vesicle. 
On the same piece of ovary are found eggs in all 
stages of development, from exceedingly small rudi- 
