9 
Denne sidste (se Fig. 2) er sserdeles stor, af nsesten 
cirkelrund Form og noget hvselvet samt langs Midten for- 
svnet med en stump Kjol. Af dens 7 Segmenter er nsest- 
sidste det storste. Hos det ene of de erkoldte Exemplarer 
fandtes under Bagkroppen en ta?t Klase af fint hornet, 
rodgul ITdrogn. 
0inenc er sserdeles smaa og lean mere eller mindre 
fuldstfendigt inddrages i 0ienkulerne. De er at cylindrisk 
Form og kun lidet udvide’de i Enden. Den facetterede Del 
indtager kun en forholdsvis liden Del af Diet og udmserker 
sig ved sit lyse, lividgule Pigment. 
lste Par Folere er fsestede i Bvmden af de ovenom- 
talte Antennegruber. livori de fuldstfendigt kan inddrages, 
idet den ydre Del (Skaftets sidste Led tilligemed de korte 
Svpber) kan slaaes albuformigt ind mod Basaldelen. Deres 
Bygning er forcvrigt den for Brachyuverne ssedvanlige. 
2det Par Folere udspringer (se Fig. 2) til liver Side 
af Antennegruberne, som de delvis bidrager til at begroendse 
udad. Deres basale Del er fast lorvoxet med Epistomet 
og danner. som ovenfor anfort. den nedre Begraendsning for 
Dienhulerne. Den ydre Kant af denne Del er ganske glat, 
uden tandformige Fremspring, og Enden simpelt afkuttet. 
Lugteknuderne befinder sig belt bagtil nser Mundrammen. 
Den frie Del af disse Folere er traadformig og rager frem 
til liver Side af Pandebornene, bvis halve Lsengde de om- 
trent opuaar. Man kan adskille et smalt cylindriskt 2-leddet 
Skaft og en meget tynd. omtrent ligelang, af Here Led be- 
staaende borsteformig Svobe. 
Den temmelig store firkantede Mundramme (se Fig. 2). 
der tager sin Begyndelse i nogen Afstand fra Antenne- 
gruberne med en fuldkommen lige og glat Band, dtekkes 
fuldstsendigt af de ydre Kjcevefodder. 
Disse sidste (Fig. 4) er af sserdeles kraftig Bygning 
og udspringer til liver Side af Mundrammens bagre Del, 
umiddelbart foran den spaltformige Aabning, der forer ind 
til Gjellehuleme (se Fig. 2). De bestaar af den egentlige 
Kjsevedel eller Stamme og en betydelig tyndere ydre Gren 
(Exognatb), for uden den i Gjellehulen indragende A ifte 
(Epignath). som ikke er fremstillet paa Figuren. Man kan 
paa selve Stammen adskille 7 Led, hvoraf de to forste er 
meget korte og mindre tydeligt begrsendsede, medens de 2 
folgende Led er strcrkt pladeformigt udvidede og paa sin 
ydre Flade grovt granulerede. 3die Led er det storste, af 
aflang firkantet Form og langs sin indre Kant uregelmses- 
sigt tandet samt besat med korte og tsette Borster. 4de 
Led er sfaerkt udvidet mod Enden, betydelig bredere end 
langt og af uregelmsessig trekantet Form, med den forreste 
Band nsesten lige afskaaret. Paa dots indre Flade er en 
Udrandning. livori den korte indad krummede Endedel eller 
Palpe er fsestet ved en meget bevsegelig Articulation. 
Dennes 3 Led aftager successivt i Tykkelse og er alle ta?t 
haarede. Exognathen udspringer fra A dersiden af Stniii- 
mens 2det Led og bestaar af et noget affladet, svagt bugtet 
Den norske N orilhavsQXpeditir.il . G. 0 . Sars: Crustacea. 
The latter part (see fig. 2) is exceedingly large, almost 
! circular and somewhat arcuate in shape, and furnished along 
the middle with an obtuse carina. Of its 7 segments, the 
penultimate is the largest. In one of the specimens ob- 
tained was found under the abdomen a thick cluster of 
finely granulous reddish-yellow roe. 
The eyes are exceedingly small, and admit of being 
more or less completely retracted within the orbital. They 
are cylindric in form, and but slightly dilated at the ex- 
tremities. The cornea constitutes but a small portion 
of the eye, and is characterized by its light, whitish-yellow 
pigment. 
The 1st pair of antennse are attached at the bottom 
of the aforesaid antennal fovea 1 , into which they can be 
j wholly retracted, since the outer part (the last segment 
of the peduncle together with the short flagella) admits 
of being elbow-like bent in toward the basal portion. For 
the rest, their structure is that usually observed in the 
Brachyura. 
The 2nd pair of antenna issue (see fig. 2) one on 
either side of the antennal fovea, which in part they serve 
to limit exteriorly. Their basal portion is connate with the 
epistome, and forms, as stated above, the lower limit of the 
orbita. The outer margin of this portion is perfectly smooth, 
without dentate projections, and the extremity simple. The 
olfactory tubercles occur far behind, in close proximity to 
the buccal area. The free portion of these antenna is 
filiform, and projects on either side of the rostrum, about 
half the length of which they attain. A slender cylindric 
peduncle, with two segments, can be distinguished, as also 
an extremely narrow, setiform flagellum, nearly equal in 
length, and consisting of several segments. 
The comparatively large quadrate buccal area (see 
fig. 2), originating at some distance from the antennal 
fovea 1 , with a perfectly even and smooth border, is wholly 
covered by the outer maxillipeds. 
The latter parts (fig. 4) are exceedingly strong; they 
are attached on either side of the posterior portion of the 
buccal area, immediately anterior to the fissure-like opening 
that leads to the branchial cavity (see fig. 2). They consist 
of the true maxillary portion, or stem, and a much more 
slender external branch (exognatb), together with the flabellum 
(epignath), projecting into the branchial cavity (not repre- 
sented in the figure). On the stem itself can be distinguished 
7 articulations, of which the 2 first are exceedingly short 
and less distinctly indicated, whereas the 2 succeeding ones, 
pronounced lamelliform, are greatly dilated, and have their 
outer surface coarsely granulous. The 3rd segment, which 
is the largest, has an oblong, quadrate form, with its inner 
margin irregularly dentate, as also beset with short and 
closely disposed bristles. The 4th segment is very much 
dilated at the extremity, considerably broader than long, 
and has an irregular-triangled form, with the anterior 
margin almost vertically truncate. On its inner surface is 
observed a hollowed emargination, to which the short term- 
inal portion, or palp, curving inward, is attached by an 
exceedingly mobile articulation. The 3 articulations com- 
2 
