Lappe. Fra dets forreste Del udgaar til hver Side 

 og nog-et opad en kort og tyk Nervestamme, som er 

 Synsuerven. Efterat være traadt lien mod den 

 nedre Flade af Øiet, opløser den sig i talrige diver- 

 gerende Grene (se Fig. 7), hvoraf liver enkelt for- 

 binder sig med et tilsvarende Synselement. Fra 

 Midten afHjernegangliets forreste Ende passerer en 

 temmelig stærk Nervestamme lige fortU og omgiver 

 med sin gangiiøst ojisvulmede Ende det enkle Øie 

 bagtil (se Fig. 5). Hvor Nerverne for Fol erne ud- 

 springer, liar det ikke været mig muligt at se, men 

 der er Rimeliglied for, at deres Udspring forholder 

 sig som hos Branchipodiderne. Bagtil udgaar fra 

 Hjernegangliet 2 lange Commissurer, der omgiver 

 Spiserøret og nedentil forljinder sig med det Iste 

 Ganglion i Buggangliekjæden. Denne sidste (se Fig. 

 9, 10, 11) bestaar af en stor Mængde (janglier sva- 

 rende til det store Antal Fodder, og er idethele be. 

 tydelig stærkere ndviklet end hos Branchipodiderne, 

 ligesom den ogsaa viser et temmelig forsk] elligt Ud- 

 seende, noget nærmende sig til det hos Phjdlocari- 

 derne. Som hos disse, ligger Ganglierne (se Fig. 9) 

 meget tæt sammen, om de end er tydeligt skilte 

 baade ved Længde- og Tværcommissurer. Af de 

 sidste tindes, som hos andre Phyllopoder, 2 for hvert 

 Par Ganglier, og mellem dem er der en meget liden, 

 tvært oval Aabning, medens der mellem Længde- 

 commissurerne er et større, paa langs ovalt Mellem- 

 rum. Fra hvert Ganglion ndgaar til Siden 2 stærke 

 Nervestammer, hvoraf den forreste strax deler sig i 

 2 Grene ; men angaaende disse Nervestammers videre 

 Forlob har jeg ikke kunnet skafte mig fuld Klarhed. 

 Bagtil bliver Gangliekjæden (se Fig. 10, 11) gradvis 

 smalere og de enkelte Ganglier tættere sammen- 

 trængte, saaat Commissurerne mellem dem vanske- 

 ligt adskilles. Den ender i en stump Spids paa det 

 Sted, hvor de sidste Par rudimentære Fodder tindes. 

 Fra denne bagerste Del af Buggangliekjæden udgaar 

 Nerverne for Halen ; men heller ikke om disses For- 

 lob har ie"' kunnet skafte mig et klart Besrelj. 



Ovarierne (Tab. XIII, Fig. 1, 2, ov) repræsen- 

 teres af 2 temmelig voluminose og stærkt lappede 

 Organer, der strækker sig langs Siderne af Tarmen 

 igjennem Størsteparten af den fodbæi-ende Del af 

 Kroppen. De munder hvert med en kort Ægleder 

 ved Basis af Ilte Fodpar, og indeholder et indre 

 Hulrum, der staar i direkte Forbindelse med Æg- 

 leder(Mi. TIn(h}rsoges et Stykke af de udpræparerede 

 Ovarier nn<Ier Mikroskopet, vil man finde, at ethvert 

 sig udviklende Æg er indesluttet i en Follikel, der 

 )'ager frem fra Ovariets OverHadc i Form af en af- 

 riindet, mere eller mindre fremspringende Blære. 

 Man tinder jiaa samme Stykke Ovarium Æg i alle 

 Udviklingsstadicr, fra overordentlig smaa, kun ved 



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 corresjiond- 

 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. o). It 

 has not been possible for me to see where the 

 nerves for the antennæ originate, but it is probable 

 that their origin is the same as in the Branchipo- 

 didæ. From the cerebral ganglion, jiosteriorly, run 

 two long commissures, whicli encircle the æsophagus, 

 and unite below with the first ganglion in the ven- 

 tral ganglion chain. Tlie 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 

 Branchipodidæ, exhibiting too, a rather ditfereut ap- 

 pearance, somewhat approaching that of the Pliyllo- 

 caridæ. As in that group, the ganglia (see fig. 9) 

 lie very close together, although distincth' separated 

 both l)y longitudinal and transverse commissures. 

 Of the latter there are, as in tlie 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 

 difticult to distinguish. It ends in a blunt point at 

 the place where the last pair of rudimentary legs are 

 found. From this ]iosterior part of the ventral 

 ganglion chain issue the nerves for the tail, hut in 

 their case also, I liave been unable to obtain any 

 clear idea as to tlie course they take. 



The ovaries (PI. 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 gi'eater part of the body. They each 

 o])en hy a short oviduct at the base of the 11th 

 pair of legs, and contain an inner cavity, wliich is 

 in direct communication witli tlii' oviihirt. (hi exa- 

 mining a portion of the dissected ovai'y under the 

 microsco])e, it will be seen that each of the eggs 

 undergoing develo))iiieiit is eiudosed in a follicle, 

 wliich projects from the surface of the ovary in the 

 forin of a rounded, more or less projecting vesicle. 

 ( tn the same ])iece of ovary are found eggs in all 

 stages of (li'veloj)inent, from (exceedingly small rudi- 



