Segmenter. Paa Midtkroppen berer derimod hvert 
Segment kun et enkelt Par Fodder, og de er her 
ogsaa langt kraftigere udviklede (see Tab. XI, Fig 2), 
visende idethele, naar undtages iste Par, Charac- 
teren af wegte Griberedskaber, vel skikkede til at 
gribe og fastholde den Nering, hvoraf Dyret lever. 
Forovrigt er disse forreste Par, ligesaavel som de 
bagerste, forsynede med de 2 characteristiske ydre 
Vedheng, Exopodit og Epipodit, der begge synes 
at staa i Respirationens Tjeneste. Foddernes Antal 
er ialt ikke mindre end 63 Par. 
Iste Fodpar (Tab. XII, Fig. 1, p*, Fig. 14) skil- 
ler sig kjendeligt i sit Udseende fra de folgende Par, 
og er ogsaa ialmindelighed mere udadrettede, saa-at 
de delvis overrager Rygskjoldets Sidekanter. De 
bestaar imidlertid af de samme Hoveddele som de 
ovrige Fodder. Selve Stammen viser en mere eller 
mindre tydelig Segmentering. Navnlig er der paa 
Midten af samme en meget distinct Ledfoining, der 
deler Stammen i en indre og en ydre Del, dannende 
med hinanden en noget kneformig Boining. Den 
indre Del af Stammen har, som paa de ovrige Fod- 
der, ved Basis en vel udviklet og meget skarpt 
sondret. Coxallap, der er rettet lige indad og besat 
paa sin stumpt afrundede Ende med talrige korte 
Pigge og fine, indadkrummede Borster. Af de saa- 
kaldte Enditer er kun den inderste feestet til denne 
Del af Stammen, medens de 3 ovrige udgaar fra 
dens ydre Afsnit. De har alle Formen af forholds- 
vis smale, nesten traadformige Fortsatser, grovt 
sagtakkede i Kanterne og delvis visende en utyde- 
lig Leddeling. Den 4de eller yderste Endit er dob- 
belt saa lang som den Iste og omtrent af Stammens 
halve Lengde. Ved Basis af denne Endit er der et 
ubetydeligt lancetformigt Fremspring, der repreesen- 
terer Rudimentet af den paa de ovrige Fodpar me- 
get kraftigt udviklede 5te Endit. De 2 ydre Ved- 
heng er begge forholdsvis smaa. Epipoditen (ep) 
har Formen af en afrundet oval Lamelle, der ved 
en kort Stilk er festet til Stammens Yderside om- 
trent ved dennes kneformige Boining. Exopoditen 
(ex), der udspringer i kort Afstand fra Epipoditen 
lengere udad, er ligeledes pladeformig, men betyde- 
lig mindre og af uregelmessig trekantet Form, idet 
den er udtrukket i 2 Flige, hvoraf den yderste. er 
mest fremspringende og rundt om kantet med fine 
Borster. 
2det Fodpar (Fig. 15) er adskilligt sterkere byg- 
get end Iste, og skiller sig desuden vesentlig ved 
Forholdet af Enditerne. Disse er nemlig kortere og 
.sterkere, nesten kloformige, og mangler ethvert 
Spor af Leddeling, skjondt de viser i begge Kanter 
et Antal af smaa, med fine Pigge besatte Afsatser. 
Den yderste eller 5te Endit, der paa 1ste Par kun 
74 
than there are segments. On the mesosome, on 
the= other hand, each segment carries only a 
single pair of legs, which are also much more 
powerfully developed. (see Pl. XI, fig. 2), exhibiting, 
on the whole, with the exception of the first 
pair, the character of true grasping organs, well 
fitted for seizing and retaining the food on which 
the animal lives. The anterior, as’ well as the pos- 
terior pairs, are furnished with the two charac- 
teristic external appendages, exopodite and epipo- 
dite, which both appear to serve as organs of respi- 
ration. The number of legs in all is no less than 
63 pairs. 
The first pair of legs (Pl. XI, fig. 1, p', fig. 14) 
is conspicuously distinguished in appearance from 
the succeeding pairs, and is also generally directed 
more outwards, so as partially to project over the 
lateral edges of the carapace. These legs consist, 
however, of the same principal parts as the other 
legs. The stem itself shows a more or less distinct 
segmentation. In the middle of it, notably, there 
is a very distinct articulation, dividing it into a 
proximal and a distal part, which form with each 
other a somewhat geniculated flexure. As in the 
other legs, there is, at the base of the proximal 
portion of the stem, a well-developed and very 
sharply defined coxal lobe, directed straight inwards, 
and furnished at its bluntly rounded extremity with 
numerous short spines, and fine, incurved bristles. 
Of the so-called endites, only the innermost is 
attached to this part of the stem, while the other 
3 issue from its distal section. They all have the 
form of comparatively narrow, almost filiform pro- 
cesses, coarsely serrated. at the edges, and partly 
showing an indistinct segmentation. The fourth, or 
outermost endite is twice as long as the first, and 
about half the length of the stem. At its base, 
there is a lanceolate projection, which represents 
the rudiment of the powerfully developed 5th endite 
on the other legs. The two outer appendages are 
both comparatively small. The epipodite (ep) is in 
-the shape of a rounded oval lamella, attached by a 
short peduncle to the outer side of the stem at 
about the geniculated bend. The exopodite (ex) 
which issues at a short distance from the epipodite, 
farther out, is also lamellar, but considerably 
smaller, and of an irregularly triangular shape, 
-being drawn out into two lobes, of which the outer 
is the more prominent, and is edged all round 
with fine bristles. : 
The 2nd pair of legs (fig. 15) is far more strongly 
built than the first, and is, in other respects, prin- 
cipally distinguished by the relations of the endites 
to one another. These are shorter and stronger, 
almost claw-like, and devoid of every trace of seg- 
mentation, although they exhibit at both edges a 
number of small serrations clothed with fine spinules. 
