237 
Overladen (Fig. 4) or temmelig. voluminOs og har 
Fortil et knudeformigt, mod trette stive Haar besat Frem- 
s Pring. Den mot [ Mundaabningen veiulte Side gaar ud i 
siuaa jevnsides stillede Lapper. 
UnderlEeben har jeg ikke kunnet faa tilfredsstillende 
isolorot. Den beskrives nflicre af Moobius paa ovenanfprte 
Sted. 
Kindbakkerne (Fig. 6) er kraftigt udviklede, mod Tygge- 
1 ar *den noget udvidet og tilskjaerpet saint, delt i 5 Tender, 
v oraf den yderste er storst og i den one Kant fint takket. 
Ib- ovrige gaar alle ud i 2 ligeligt udviklede Spidser; inden- 
for <lon inderste er fVestet en stiv Rorste. Palpen er for- 
Wdsvis stor og bestaar af on tyk ntydeligt 2-leddet Ba- 
saldel 0 g 2 korte Grene. Den inderste af disse er 2-leddet 
^ dar i Spidsen af sidste Led 8 — 10 -stserke Fjserbprster- 
_ ' n ydre Gren er noget opsvulmet paa Midten og delt i 
^ atvdeligt begrsendsede Led, hvoraf ethvert brerer en lang 
°S stark boiet Fjicrhorste. 
Kjseverne (Fig. 7) bestaar af den egentlige Kjajvedel 
^4 en til Ydersiden af samme faestet membranes Palpe ellei 
x °gnath. Kj;ovedelen er stserker chitiniseret, indadkrummet 
paa den noget skraat afskaarne Tyggeraml bevsebnet med 
e>e stierke saugtakkedo Torner, indenfor hvilke der endnu 
61 bustet en Del tyndere Borster. Palpen bestaar al 2 
tydeligc Segm enter, et bredt trelappet Basalled og et til 
nden af den midterste Lap feestet ganske kort Lndeled. 
d den ydre og indre Lap af Basalleddet er faestet on 
J1 uppe af Fjserborster, hvoraf isier de til den ydre Lap 
/^ende udmierker sig ved betydelig Lrengde. Den ydre 
v< wit af Endeleddet barer 7 ualmindelig lange og staerkt 
1U| iunede Fjaerbdrster. 
!ste Par Kjaevefpdder (Fig. 8) er staerkt byggede, 
0l ’tilkrummede og delt i 6 — 7 Segmenter, hvoraf dot lste 
61 Ule get stort og tykt samt fortil paa den indre Side tor- 
med 2 smaa borstebesatte Lappe. Ethvert at do 2 
!l gende meget korte og utydeligt begramdsede Segmenter 
gaar ligeledes fortil ud i smale Lappe, paa Spidsen be- 
Satte wed staerke krummede Burster, der paa den ydre Lap 
autager Formen a.f klodannede, kun i den ene Kant tint 
wlierede Torner. 4de Led er langere og stterkere end saa- 
! 2 foregaaencle som de 2 efterf0lgende og forlaenger 
paa den forreste Side til en i Spidsen afskaaren tem- 
% bred Lap, medens de 2 ydre Tied er ganske simple. 
lj til disse 3 sidste Led fsestede Torner er smrdeles lange 
* Jwuit buede samt af samme Bygning som de fra det 
sftoregaaende Led udgaaende, dannende tilsammen et 
,' lt, dt af kraftige Klor, egnede til at fastholde de Orga- 
ls 'Uer, som kommer indenfor deres Omraade. 
u | . b >ar Kjmvefodder (Fig. 9) er sserdeles kraftigt 
Dklede og af en for nservserende Slsegt eiendommelig Form. 
, 1 *° l ne mlig dobbelt geniculerede, idet lste og 2dot Led 
bagtil med hinanden en stark albueformig Boining, 
The labrum (fig. 4) is rather voluminous, and has 
anteriorly a tuberculiform projection, densely covered with 
stiff hairs. The side turning toward the buccal orifice juts 
out as 2 small lobules, placed side by side. 
The labium I have not succeeded in satisfactorily isolat- 
ing. Of this part, Moebius gives a rather detailed desciip- 
tion in the forfeited Memoir. 
The mandibles' (fig. 6) are powerfully developed, with 
the cutting edge somewhat expanded and sharpened, as 
also divided into 5 teeth, of which the outermost is largest, 
and, along one of its margins, finely serrate. The rest all 
jut. out with 2 equably developed points ; at the base of the 
innermost occurs a stiff bristle. The palp' is comparatively 
large, and consists of a thick, indistinctly two-jointed basal 
part and 2 short branches. The innermost of these is 
two-jointed, and has at the point of the last articulation 
g io strong, plumous bristles. The outer branch is some- 
what tumid in the middle, and divided into 5 indistinctly 
defined articulations, each bearing a long and sharply 
curved plumous bristle. 
The maxilla (fig. 7) consist of the true maxillary 
portion and a membranous palp, or exognath, affixed to its 
outer side. The maxillary portion is more highly chitinous, 
incurved, and bearing on the somewhat obliquely truncate 
masticatory border a number of powerful serrate spines, within 
which are likewise attached .a few comparatively slender 
bristles. The palp consists of 2 distinct segments, a broad 
tri-lobular basal joint and an exceedingly short, terminal 
articulation, attached to the extremity of the median lobule. 
On the outer and inner lobes of the basal joint occurs a 
group of plumous bristles, of which those belonging to the 
outer lobe are in particular characterized by considerable 
length. The outer margin of the .terminal joint bears 7 
remarkably long and sharply curved plumous bristles. 
The 1st pair of maxillipeds (fig. 8) are powerful in 
structure, curved anteriorly, and divided into 6 or 7 seg- 
ments, of which the 1st is very large and thick, as also 
anteriorly, on the inner side, furnished with 2 small, seti- 
ferous lobes. Each of the 2 succeeding, very short and 
indistinctly defined segments, also jut out as slender lobules, 
armed at “the point with strong, curving bristles, which on 
the outer lobule assume the form of unguiculate spines, 
finely eiliate along one of their edges only. The 4th joint 
is longer and more powerful than both the 2 preceding 
and the 2 succeeding ones, and on the foremost side produced 
to rather a broad lobe, truncate at the point, whereas the 
2 outer joints are quite simple. The spines attached to 
theS e 3 terminal joints are exceedingly long and evenly 
arched as also uniform in structure with those on the 
joint immediately preceding, and constitute together a fas- 
cicle of powerful claws, well adapted to grasp the various 
organisms that come within their range. 
The 2nd pair of maxillipeds (fig. 9) are most power- 
fully developed, and of a form peculiar to the present genus. 
They . U 'e namely, twofold-geniculate, the 1st and 2nd joints 
forming posteriorly, one with the other, a strong elbow- 
