og uden enhver Borstebevebning. 2det Led, der 
omtrent er af samme Storrelse som liste, mangler 
ligeledes Borster, men gaar fortil ud i et kort tand- 
formigt Fremspring. Den ydre Del af Skaftet dan- 
ner ogsaa her en steerk kneformig Boining med fore- 
gaaende Led, men bestaar kun af et enkelt Led, paa 
hvilket dog en oprindelig Tvedeling er antydet ved 
en skarpt markeret Afsats baade fortil og bagtil ’). 
Til den bagre Afsats er festet en sterk Fjerborste, 
og langs Forkanten af Leddet findes en hel Del saa- 
danne Borster, tildels af betydelig Leengde, navnlig 
ved Enden, hvor de delvis er krandsformigt’ stillede 
omkring Leddet. Desuden findes langs den ovre 
Halvpart af Forkanten en Rad af Smaatorner, der 
nedad successivt tiltager i Lengde, og en Del lig- 
nende Torner bemerkes ogsaa ved Enden af Leddet 
fortil mellem Borsterne. Sveben er betydelig (ne- 
sten dobbelt) lengere end paa de ovre Folere og 
bestaar af omkring 20 berstebesatte Led, hvoraf dog 
de 3 eller 4 inderste er mindre tydeligt begrendsede. 
Hos den endnu ikke slegtsmodent udviklede Han 
skiller disse Folere (Fig. 1, a”) sig vesentlig kun 
derved, at Svoben er meget tet ringet, eller delt i 
et stort Antal, endnu ufuldstendigt begreendsede Led. 
Overleben (Fig. Ps L, Fig. 8), der til Siderne 
ganske dekkes af de nedre Foleres Basalled, danner 
et tydeligt convext Fremspring af afrundet Form og 
med den bagre Kant svagt indbugtet i Midten samt 
her besat med fine Haar. 
Underleben (Fig. 7, 1, Fig. 9) ‘er meget liden 
og vanskelig at isolere. Den har imidlertid fore- 
kommet mig at frembyde det Fig. 9 fremstillede 
Udseende af en i Midten dybt indskaaret og delvis 
cilieret Plade. 
Kindbakkerne (Fig. 1, M, Fig. 10) har et for- 
holdsvis meget lidet Corpus, hvis ydre Del er baad- 
formig og ender opad i en Spids, hvormed det arti- 
culerer til Rygskjoldets indre Flade. Dets indre 
Hule er fyldt med de strke, i Midten ved en chitin- 
agtig Sene forbundne Adductormuskler (se Fig. 10), 
og fra den bagre Kant udgaar en tynd Chitinsene, 
hvyortil Kindbakkernes Rotationsmuskler fester sig. 
Den nesten under en ret Vinkel med det ovrige 
Corpus indboiede Tyggedel er (se Fig. 11) i Enden 
delt i 2 Grene, hvoraf den ydre har Formen af en 
liden trianguler Lamelle, der svarer til det tandede 
Parti (cutting edge) hos andre Crustaceer, medens 
') Hos Sl. Nebaliopsis bestaar denne Del af 2 tydeligt be- 
grendsede Led. 
15 
the head, strongly musculous, and without any ar- 
mature of bristles. The 2nd joint, which is about 
the same size as the 1st one, is also quite deficient 
in bristles, but passes, in front, into a short denti- 
form projection. The outer part of the peduncle 
also forms here a strongly geniculated bend with 
the preceding joint, but consists of only a single 
joint, upon which, however, there is an indication 
of an original subdivision in the shape of a sharply 
defined ledge both in front and behind’). Attached 
to the posterior ledge there is a powerful plu- 
mose bristle, and along the anterior edge of the joint 
quite a number of such bristles may be observed, 
partly of considerable length, especially at the ex- 
tremity, where they are partly arranged in a ver- 
ticillate manner around the joint. Further, there 
may be observed along the upper half of the an- 
terior edge a series of small spines, which gradu- 
ally increase in length below; and a number of 
similiar spines are also observed at the extremity 
of the joint in front, between the bristles. The fla- 
gellum is considerably longer (nearly double) than 
on the superior antenne, and consists of about 20 
joints beset with bristles, of which, however, the 
3 or 4 innermost ones are less distinctly defined. 
In the not yet sexually fully developed male 
these_ antenne distinguish themselves chiefly (fig. 
1, a”), only by the circumstance that the flagellum 
is very closely annulated, or divided into a large 
number of still imperfectly defined joints. 
The anterior lip (fig. 7 L, fig. 8) which, at the 
sides, is quite covered by the basal joints of the 
inferior antennz, forms a distinctly convex promi- 
nence of rounded form, with the posterior margin 
faintly hollowed in the middle and beset here with 
delicate hairs. 
The posterior lip (fig. 7 1, fig. 9) is very small 
and difficult to isolate. It appears, however, to me, 
to present the appearance of a partly ciliate lamella, 
deeply incised in the middle, as shown in fig. 9. 
The mandibles (fig. 1, M, fig. 10) have, relati- 
vely, a very small corpus, whose outer portion is 
navicular in form and terminates above in a point, by 
which it articulates with the inner surface of the 
carapace. Its inner cavity is occupied by the pow- 
erful adductor, muscles, which are connected in the 
middle by a chitinous tendon (see fig. 10), and from 
the posterior margin a thin chitinous tendon issues, 
to which the rotatory muscles of the mandibles are 
attached. The masticatory part, which is bent 
inwards almost at a right angle to the remaining 
corpus (see fig. 11), is divided at the extremity into 
2 rami, of which the outer has the form of a 
*) In the gen. Nebaliopsis this part consits of 2 distinctly 
defined joints. 
