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229
bevæbnet mod et vist Antal større tilspidsede Pigge, der er
regelmæssigt ordnede saaledes, at de største danner en
dobbelt Rad langs efter Ryggen.
Hovedet er forholdsvis lidet og oventil bevæbnet med
et Par korte, men tydelige Pigge. lste Kropssegment er
kortere end de 4 derpaa følgende og af sædvanüg Form;
det viser oventil 3 Par temmelig smaa tilspidsede Knuder.
2det Segment har den sædvanlige tendannede Form og viser
oventil 3 Par stærkt fremtrædende Pigge, hvoraf navnlig
det midterste udmærker sig ved betydelig Længde; desuden
sees over Basis af 2det Fodpar en stærk skjævt fortilrettet
lateral Pig. De 2 følgende Segmenter, der omtrent er af
samme Størrelse som 2det, har ligeledes over Basis af
Gjellebladene og til hver Side af Brystposen en stærk
lateral Pig samt desuden en dobbelt Rad af høie tilspidsede
Pigge langs Rygsiden, 4 Par paa hvert Segment. 5te
Segment er noget smalere end de 2 foregaaende og langs
Rygsiden bevæbnet med en Del mere eller mindre
fremtrædende Pigge. De 2 sidste Kropssegmenter er som
sædvanlig ganske korte, og hvert forsynet med 4 i en Tværrad
staaende Pigge, 2 dorsale og 2 laterale.
Bagkroppen (sml. Fig. 5 c) er mindre rudimentær end
hos foregaaende Slægt og bestaar af 2 tydelige Segmenter,
hvert forsynet med et Par Lemmer.
Øinene er ganske smaa, runde, med som det synes
ufuldkomment udviklede Synselementer.
1 ste Par Følere er tynde og forlængede, næsten af
hele Legemets Længde. Af Skaftets Led er 2det længst
og 3die længere samt betydelig tyndere end lste. Svøben
er noget, skjøndt ikke meget, kortere end Skaftet og bestaar
af circa 2ü korte med line Børster besatte Led.
2det Par Følere er meget smaa og tynde, neppe mere
end >/3 saa lange som lste Par, samt mangler ganske de
stærke Børsteknipper, der udmærker disse Følere hos
Arterne af foregaaende Slægt.
Kindbakkerne (Fig. 5 a) ligner meget i sin Bygning
samme hos foregaaende Slægt, men skiller sig væsentlig
derved, at de er forsynede med en vel udviklet 3-leddet Palpe.
I de øvrige Munddeles Bygning er derimod ingen
væsentlig Afvigelse fra samme hos Caprella at notere.
lste Fodpar (Fig. 5 b) er ligeledes temmelig
overensstemmende bygget, skjondt noget mindre undersætsigt end
bos de 2 i det foregaaende omtalte Caprelliner.
2det Fodpar (se Fig. 5) er kraftigt udviklet, med
Basalleddet ganske smalt og simpelt cylindriskt, Haanden
særdeles stor, saa lang som alle de øvrige Led tilsammen,
af aflang Fonn, med den bagre Rand tilskjærpet og delt i
3 lancetformige Flige, hvorat den midterste er størst. Af
de 2 ved disse Flige begrændsede Indsnit er det forreste
and armed above with a definite number of comparatively
large acute spikes, in regular arrangement, and so disposed,
that the largest constitute a double series extending along
tbe back.
The head is comparatively small, and furnished above
with a pair of short but distinct spikes. The 1st
body-segment is shorter than the 4 succeeding ones, and of the
usual form; above, it exhibits 3 pairs of rather small
acute protuberances. The 2nd segment has the usual
fusiform shape, and above exhibits 3 pairs of very prominently
developed spikes, of which in particular the median is
characterized by considerable length; besides, over the
base of the 2nd pair of legs is seen a strong,
anterior-directed lateral spike. The 2 succeeding segments, about
equal in size to the 2nd, have likewise above the base of
the branchial scales and on either side of the marsupium
a strong lateral spike, as also a double series of high
acute spikes along the dorsal surface, 4 pairs on either
segment. Tbe 5th segment is a trifle more slender than
the 2 preceding ones, and armed along the dorsal surface
with a number of more or less prominent spikes. The 2
last body-segments are, as usual, quite short, aud each
furnished with 4 spikes, arranged transversally, 2 dorsal and
2 lateral.
The abdominal division of the body (see fig. 5 c) is
less rudimentary than in the preceding genus, and consists
of 2 distinct segments, each provided with a pair of limbs.
The eyes are quite small, round, and, it would
appear, with incompletely developed visual elements.
The 1st pair of antennæ are slender and elongate,
well-nigh equalling the body in length. Of the joints of
the peduncle, the 2nd is longest, and the 3rd longer than
the 1st, as also considerably more slender. The flagellum
is somewhat, though not much, shorter than the peduncle,
and consists of close upon 20 short, with delicate bristles
beset joints.
The 2nd pair of antennæ are very small and slender,
scarcely more than a third the length of the 1st pair,
and want altogether the strong fascicles of bristles
characterizing these antennæ in the species of the preceding
genus.
The mandibles (fig. 5 a) resemble closely in structure
those of the preceding genus, but differ essentially in
having a well-developed three-jointed palp.
In the structure of the other oral appendages, no
important deviation from that in Caprella has to be recorded.
The 1st pair of legs (fig. 5 b) are likewise
comparatively similar in structure, though somewhat less thickset
than is the case with the corresponding pair in the 2
previously described Caprellæ.
The 2nd pair of legs (fig. 5) are powerfully developed,
with the basal joint quite slender and simple cylindric, the
hand exceedingly large, equal in length to all the other joints
taken together, oblong in form, with tbe posterior margin
sharpened and divided into 3 lanceolate lappets, of which the
median is the largest. Of the 2 incisions bounded by these
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