81 
udi ettede Exognatli er kortere end Tyggelappen og forsynet 
Med 2 ulige lange Burster ved Spidsen. 
2det Par Kj sever er som lios alle til denne Familie 
heiende Former ganske rudimentserc, kun dannende et Par 
Smaa - borstelose Lapper. 
Kjsevefpdderne (Fig. 2d) er ved Basis ubevaegeligt 
loibundne med hinanden, skjpndt en tydelig median Sutur 
antyder deres Adskillelse. Tyggelappen er af uregelmsessig 
firkantet Form og uden tydelige Torner eller Bovster. Palpen 
11 'el udviklet og bestaar af 4 . mere eller mindre plade- 
formigt udvidede Led, der i sin indre Kant bserer nogle 
ha. men stserke indadkrunnnede Bprster; fra det lille ovale 
Endeled ndgaar 4 saadanne. 
Saxfadderne (Fig. 24) er teinmelig kraftigt ndviklede, 
"led Leddene tykke og fyldte med standee Muskier. Haan- 
den er noget lsengere end det foregaaende Led (carpus), 
udvidet mod Enden og her i den forreste Kant forsynet 
med en kort takket Kara, der ogsaa fortssetter sig langs 
a d den bevaegelige Finger. Den ubevsegelige Finger ender 
'"ed en temmelig stserk hageformig Spids og viser indenfor 
denne en tin Crenulering samt 2 korte Bprster. Begge 
Eingre er noget kortere end Palmen og slutter. naar 8 axen 
ei lukket. temmelig noie sammen. uden at Spidserne krydsei 
hinanden mserkbart. 
De egentlige Gangfpdder er forholdsvis meget smaa 
°S spinkle. De 3 forreste Par (Fig. 25) er indbyrdes om- 
tu, nt af ens TJdseende. kun sparsomt bprstebesatte og endei 
me d on lang bprsteformig Klo. De 3 bagerste Par (Fig. 26), 
der i Modscetning til bine er rettede fortil. bar de ydre 
Led temmelig rigeligt forsynede med Torner; Endekloen 
destaar her af 2 tydelige Segmenter. 
Bagkroppens Buglemmer (Fig. 27) er normalt udvik- 
L ‘de og bestaar af et meget lidet Basalled, hvortil er faestet 
w drede. ovale og indadbpiede Pladei’, der langs sin ene 
Kant er besatte med en Rad af udad i Lamgde successivt 
Lltagende Fjfer bprster. 
Halevedhaengen e (Fig. 28) er noget lamgere end sidste 
Segment og bar begge Grene, tydeligt 2 -leddede. men meget 
u dge ndviklede. Den ydre Gren er sserdeles liden og tynd, 
wepp e la‘ng ere end Stammen og, bserer ved Spidsen en en- 
e b lang Borste og en kortere i den ydre Kant. Den 
'wdie Gren er 3 Gange lamgere og betydelig tykkere. Dens 
- Led er omtrent af ens Lsengde. og det sidste bar ved 
pidsen 4 ussedvanlig lange divergerende Burster. 
Et af de erholdte Exemplarer (det Fig. 17 og 18 af- 
mldede) var forsynet med fuldt udviklet Brystpose eller 
Klsekkehule, bvoraf netop Ungerne var udkrobne. og viste 
derfor meget tydeligt dennes Sammenssetning af 5 Par brede 
lade E svarende til de 5 forreste frie Forkropssegmenter. 
b arven er den ssedvanlige, ensformigt hvide, uden al 
'gmentering. 
^ en noi ’ske Nordhavsexpedition. G. 0. Sars: Crustacea. 
The posteriorly directed exognatli is shorter than the mas- 
ticatory lobe, and furnished at the point with 2 bristles, 
unequal in length. 
The 2 nd pair of maxillae are, as in all forms belonging 
to this family, quite rudimentary, constituting merely a pair 
of small, bristleless lobes. 
The maxillipeds (fig. 23) are at the base immovably 
connected, though a distinct median suture intervenes. The 
masticatory lobe is irregular-quadrate in form, and without 
distinctly developed spines or bristles. The palp is well 
developed, and consists ol 4, more or less lamellifoim- 
dilated joints, bearing on their inner margin a few strongly 
incurving bristles; 4 such may be observed to proceed 
from the small oval-shaped terminal joint. 
The chelipeds (fig. 24) have rather a powerful develop- 
ment. with the joints thick, and furnished with strong muscles. 
The hand is somewhat longer than the preceding joint 
(carpus), dilated at the extremity, where it exhibits, on 
the anterior margin, a short, dentate comb, likewise pro- 
duced along the movable finger. The immovable finger 
terminates in a comparatively strong, unguiform point, and 
exhibits, besides, a fine crenellation, together with 2 short 
bristles. Both fingers are somewhat shorter than the palm, 
and fit. when the chela is shut, tolerably close together, 
but without any obvious crossing of the points. 
The true ambulatory legs are comparatively very small 
and feeble. The 3 anterior pairs (fig. 25) are very nearly 
uniform in appearance, but sparingly beset with bristles, 
and terminate in a long, setiform claw. The 3 posterior 
pairs (fig. 26) which, in contradistinction to the anterior, 
are directed forward, have the outer joints rather abun- 
dantly provided with spines: the terminal claw consists of 
2 distinct segments. 
The pleopoda (fig. 27) are normally developed, and 
consist of a very small basal joint, to which are attached 
2 broad, oval, incurved plates, beset along one of the 
margins with a row of plumose bristles, increasing outwards 
successively in length. 
The caudal appendages (fig. 28) are somewhat longer 
tlnn the terminal segment, and have both branches distinctly 
two-jointed, but very unequal in development. The outer 
branch is exceedingly small and slender, scarcely at all 
• lcmger than the stem, and bears at the point a long, isolated 
bristle and a shorter one on the outer margin. The inner 
branch is three times as long, and considerably thicker, 
Xts two joints are well-nigh uniform in length, and the 
latter has at the point 4 unusually long, diverging bristles. 
One of the specimens obtained (that represented in 
1 7 an d 18) had a fully developed marsupium, or in- 
cubatory pouch, from which the young had just emerged; 
and hence the observer could plainly distinguish the 5 pairs 
of broad plates that compose it, corresponding to the 5 
free anterior segments of the anteiioi division. 
Colour, as usual, a uniform white, without a, trace of 
pigment. 
