lerne synes til en vis Grad at vere beyegelige, idet 
2 tynde Muskler passerer til hver af dem ovenfra. 
Branchialfoddernes Antal er, som ovenfor an- 
fort, 12 Par. Af disse er de 3 forreste Par omtrent 
af ens Lengde, medens de ovrige hurtigt aftager i 
Storrelse bagtil. Tab. XX, Fig. 1 fremstiller en 
Fod af 3die Par seet fra den forreste Flade. Som 
det vil sees, er Formen temmelig afvigende fra 
samme hos Limnadia, skjondt man kan adskille de 
samme Hoveddele. Endopoditen er idethele bredere 
og mere pladeformig, og af Enditerne har kun de 
2 inderste et lignende Udseende som dem hos Lim- 
nadia, medens de 3 derpaa folgende er forlengede 
til fingerformig indadrettede Fortsatser besatte i den 
ene Kant med en dobbelt Rad af sterke Borster. 
Den yderste (Ste) Endit er, som hos Limnadia, be- 
vegeligt articuleret til Endopoditen og forestiller 
egentlig dennes Endeled. Coxallappen (mx) er vel 
udviklet og skraat indadrettet, visende adskillig 
Lighed i Form med Endepladen af 1ste Par Kjzver. 
Den er imidlertid (se Fig. 1 b) forsynet med et 
sterre Antal Borster i den indre Kant, tildels ord- 
nede i 2 Rekker. Yderkanten har kun en enkelt 
indadrettet Borste ner Spidsen og er forevrigt meget 
fint cilieret. Epipoditen (ep) er af middels Storrelse 
og viser en lignende Form og Structur som hos 
Limnadia. Derimod har Exopoditen et temmelig 
afvigende Udseende. Den er rigtignok ogsaa her 
deit i en ventral og en dorsal Lap; men den ven- 
trale Lap (ex), som hos Limnadia er den storste, er 
her kun tilstede som en forholdsvis ubetydelig, 
smalt tilspidset Fortsats, kantet med lange, cilierede 
Borster, medens den dorsale Lap (ex') er enormt 
udviklet, dannende en bred, halvmaaneformigt krum- 
met Plade, der rager hoit op over Kropsiderne (se 
Tab. XIX, Fig. 1). Denne Plade har langs Yder- 
kanten en tet Rad af forholdsvis korte, men tet 
cilierede Borster og er ogsaa tildels borstebesat i 
Inderkanten. Fra dens stumpt afrundede Ende ud- 
gaar desuden en meget lang og tynd, ucilieret Borste. 
Af vesentlig samme Udseende som det ovenfor 
beskrevne 3die Fodpar er ogsaa de 2 forreste og de 
4 folgende Par, hvilke sidste dog gradvis aftager i 
Storrelse. 
8de Fodpar (Fig. 2) skiller sig imidlertid, for- 
uden ved ringere Storrelse, meget vesentligt ved 
den fuldsteendige Mangel af Epipodit. Ligeledes er 
Enditerne mere sammentrengte og mindre ulige, idet 
de 2 bagerste er mere fremspringende, de 3 yderste 
kortere end paa de foregaaende Par. Exopoditens 
dorsale Lap er forsynet i Enden med flere lange, 
divergerende Borster af samme Beskaffenhed som 
den enkle apicale Borste paa 3die Par. 
124 
obliterated. The lamelle appear, to a certain extent 
to be movable, as 2 thin muscles pass to each of 
them from above. 
As stated above, the number of branchial legs 
is 12 pairs. The 3 foremost of these are of about 
uniform length, while the remainder rapidly diminish 
in size towards the back. Pl. XX, fig. 1, represents 
a leg of the 3rd pair seen from the front. As will 
be seen, the shape differs not a little from that in 
Limnadia, although the same principal parts are 
distinguishable. The endopodite is on the whole 
broader and more lamellar; and only the innermost 
endites have a similar appearance to those in Lim- 
nadia, while the next 3 are elongated into digiti- 
form, inward-pointing projections, clothed on one 
edge with a double row of strong bristles. The 
outermost (5th) endite, as in Limnadia, is movably 
articulated, to the endopodite, really representing 
the latter’s terminal joint. The coxal lobe (mx) is 
well developed, and directed obliquely inwards, and 
exhibits a considerable resemblance in form to the 
terminal lamella of the lst pair of maxille. It is, 
however (see fig. 1 6), furnished with a larger 
number of bristles on the inner margin, arranged 
to some extent in 2 rows. The outer margin has 
only a single inward-directed bristle near the point, 
and, in addition, is very finely ciliated. The epipo- 
dite is of medium size, and exhibits a similarity in 
form and structure to that of Limnadia. The exo- 
podite, on the other hand, is rather different in 
appearance, It is, indeed, here too, divided into a 
ventral and a dorsal lobe; but the ventral lobe (ex), 
which in Limnadia is the larger, here appears only 
as a comparatively insignificant, narrowly-pointed 
projection, edged with long ciliated bristles, while 
the dorsal lobe (ex +) is enormously developed, for- 
ming a broad, crescent-shaped curved lamella, which 
extends far up over the sides of the hody (see Pl. 
XIX, fig. 1), Along its outer margin this lamella 
has a close row of comparatively short, but thickly 
ciliated bristles, and is also setous to some extent.on 
the inner margin. There also projects from its bluntly 
rounded end a very long, thin, unciliated bristle. 
The 2 foremost pairs of legs, and the 4 sueceed- 
ing pairs are essentially of the same appearance 
as the above-described 3rd pair, the 4 succeeding 
pairs, however, diminishing gradually in size. 
The 8th pair of legs, however (fig. 2), besides 
being distinguished by their smaller size, differ very 
essentially in the total absence of an epipodite. The 
endites too are more crowded together and less dissi- 
milar, the 2 hind ones being more projecting, and 
the 3 outer ones shorter than in the preceding pair. 
The dorsal lobe of the exopodite is furnished at the 
extremity with several long, divergent bristles of 
the same appearance as. the single apical bristle: on 
the 3rd pair. sins gant 
