20 
formigt udskaaret Rolled er forbundet med Skaftet, er 
nsesten overall jevn tyk og bestaar af circa 20 korte, med 
tsette Knipper af gjennemsigtige, baandformige Sandseborster 
(de saakaldte cilia auditorial) besatte Led. Den indre Svobe 
er betydelig tvndere, afsmalnende mod Euden og sammen- 
sat af et lignende Antal, men med simple Borster besatte 
Led. Hos Hannerne er begge Svober lsengere og navnlig 
den ydre (Eig. 5) betydelig stserkere udviklet og bestaaende 
af flere Led. 
2det Par Folere, der nsesten er fsestede i samine 
horizontale Plan som lste Par, bestaar (se Pig. G) af en 
kort og tyk, utydelig segmeuteret Pod del, fra hvis Ende 
udgaar oven til og udad et bladformigt Vedhseng, nedentil 
og indad en tynd, mangeleddet Svobe, Roddelen gaar paa 
den ydre Side ud i en stank tornformig, fortilrettet Fort- 
sats og viser ved Basis paa den indre Side en spids Torn, 
der synes at svare til Lugteknuden lios Brachyurerne og 
den saakaldte spina olfadoria hos Amphipoderne. 
Det bladdannede Vedhieng (ibid.) er af en meget bred, 
oval eller elliptisk Form og neppe mere end dobbelt saa 
langt som bredt. Dets ydre Kant er nsesten lige, eller kun 
ganske svagt buet og glat samt ender fortil med et starkt 
tandformigt Fremspring. Den indre Kant er jevnt bue- 
formigt l)0iet og ligesom den bredt afrundede Ende af 
Bladet forsynet med en tat Rad af korte Fjaerborster. 
Den tivre Flade viser 3 divergerendo Kjoler, hvoraf den 
ydre lober i nogen Afstand fra Randen lige fortil mod det 
omtalte tandformige Fremspring. medens de 2 ovrige pas- 
serer i diagonal Retning over Bladet og taber sig heuimod 
dettes borstebesatte Rand. 
Svoben bestaar af et cylindriskt Skaft omtrent af 
Bladets Larngde og en traadformig Endedel, Skaftet (se 
Fig. 6) er sammensat af 3 Led, hvoraf de 2 forste er 
ganske korte og skjsevt forbundne med hinanden, medens 
sidste Led er af ansclig Lamgde, regelmsessigt cylindriskt 
og ved Enden borstebesat. Den traadformige Endedel (se 
Fig. 1 og 2) er omtrent af Legemets halve Lsengde og 
sammensat af talrige korte Led. 
Munddelene er idethele temmelig svagt udviMede og 
viser den for Crangoniderne characteristiske Bygning. 
Overlseben (Fig. 7) danner en temmelig volumiuos 
halvkugleformig Fremstaaenhed, der delvis dsekker Mund- 
aabningen fortil. 
Under he ben (Fig. 8) er af en sserdeles tynd, mem- 
branes Beskaffenhed og derfor vanskelig at faa helt ud- 
prsepareret. Den gaar ud i to meget staerkt divorgerende 
Lapper, der ender med en noget indadkrummet Spids, men 
forovrigt ganske synes at mangle enhver Ciliering i Kanterne. 
Kindbakkerne (Fig. 9), der som hos alle egentlige 
Crangonider magler Palpe, er forholdsvis smaa og svage. 
short and thick, almost bowl-shaped basal articulation, is 
of nearly uniform thickness throughout, and consists of about 
20 short joints, beset with closely disposed fascicles of 
translucent, riband-shaped sensory bristles (the so-called 
cilia auditoria). The inner flagellum is much more slender, 
tapering towards the extremity, and composed of a like 
number of articulations, beset however with simple bristles. 
In the males, both flagella are longer, and, in particular the 
outer one (fig. 5), much more developed and composed of 
a greater number of articulations. 
The 2nd pair of antennae, attached almost in the same 
horizontal plane as the 1st pair, consist (see fig. 6) of a 
short and thick, indistinctly segmented basal portion, from 
the extremity of which, upward and outward, proceeds a 
squamiform appendage, downward and inward a slender multi- 
articulate flagellum. The basal portion is produced on the 
outer side into a stout, spiniform, anteriorly directed process, 
and exhibits at the base, on the inner side, an acute spine, 
corresponding apparently to the olfactory tubercle in the 
Brachyura and the so-called spina olfadoria in the Am- 
phipoda. 
The squamiform appendage (ibid.) is exceedingly broad, 
oval or elliptic in form, and very little more than twice 
as long as broad. Its outer margin is almost straight, or 
very slightly curved, and smooth, terminating anteriorly in 
a stout, dentiform projection. The inner margin is uni- 
formly arcuate, and, in common with the broadly rounded 
extremity of the scale, furnished with a closely set series 
of short, plumose bristles. The upper surface exhibits 3 
diverging carinse, the outer of which extends, at some dis- 
tance from the margin, straight forward towards the pre- 
viously mentioned dentiform projection, whereas the 2 others 
pass diagonally across the scale, and disappear in immediate 
proximity to the bristly margin of the latter. 
The flagellum consists of a cylindric peduncle, about of 
the same length as that of the scale, and of a filiform 
terminal portion. The peduncle (see fig. 6) is composed 
of 3 segments, the 2 first quite short and obliquely con- 
nected with each other, whereas the last segment is of 
considerable length, of a regular cylindrical form, and at the 
extremity beset with bristles. The filiform terminal portion 
(see figs f, 2) about equals half the body in length, and is 
composed of numerous short articulations. 
The buccal parts are on the whole but slightly de- 
veloped, and exhibit the structure characteristic of the 
Crangonidw. 
The labrum (fig. 7) constitutes a comparatively volu- 
minous semiglobular prominence, partially covering the buccal 
orifice in front. 
The labium (fig. 8) has an exceedingly thin, mem- 
branaceous structure; and hence can with great difficulty 
be separated in a complete state. It protends as two ex- 
ceedingly diverging lobules, terminating in a somewhat in- 
wardly curved point, but for the rest would appear to be 
entirely without any ciliated covering at the edges. 
The mandibles (fig. 9), which, as in all true Cran- 
gonidee, are without any palps, are comparatively small and 
