Full resolution (JPEG) - On this page / på denna sida - Sidor ...
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
holdsvis betydelig mindre og mere jevnt afrundede. 4de
og 5te Segments Epimerer er rettede skraat bagtil og ender
med et kort tandformigt Fremspring.
Øinene er særdeles smaa og dækkes for eu stor Del
af Pandepladen. De er af smalt kolledannet Form. med
den ydre Del kun svagt udvidet og jevnt tilrundet.
Øie-pigmentet er ganske lyst, næsten kridtbvidt og
Synselemen-terne kun ufuldkommet udviklede.
Folerne er ligesom bos Crangoninerne næsten fæstede
i samme borizontale Plan, hvorfor de, naar Dyret sees i
Protil (Fig. 2), for en stor Del gjensidig dækker hinanden.
1ste Par Foleres Skaft (se Fig. o) er temmelig kort,
neppe halvt saa langt som Rygskjoldet. Af dets 3 Led er
det 1ste størst, og af samme Længde som de 2 øvrige
tilsammen. Det er ved Basis paa den ydre Side forsynet
med den sædvanlige pladeformige Fortsats, der dog kun er
lidet udviklet og af smal lancetdannet Form. Den indre
Kant af Leddet er besat med korte Borster og har noget
foran Midten et meget lidet tandformigt Fremspring. Sidste
Led er noget kortere end 2det og i Enden tvært afskaaret.
Af de 2 Svøber er den ydre hos Hannen omtrent dobbelt
saa lang som Skaftet, hos Hunnen noget kortere; den er
hos begge Kjøn cylindrisk og temmelig jevnt tyk lige til
Spidsen som er udtrukken i en kort Endesnært, samt
sammensat af talrige korte Led, besatte med de sædvanlige
Knipper af klare, baandformige Sandsebørster. Den indre
Svobe er (se Fig. 1 og 2) stærkt forlænget, omtrent 3 Gange
saa lang som den ydre, og afsmalnes jevnt mod Enden.
2det Par Folere (se Fig. 4) har en kort og tyk,
utydelig segmenteret Roddel, der saagodtsom ganske er
ubedækket af Rygskjoldet og udad springer frem i Form af
en stærk trekantet Fortsats.
Det bla ddannede Vedhæng er af eu ganske usædvanlig
Størrelse og saa stærkt udbredt mod Enden, at det i sin
normale Stilling ikke blot møder det tilsvarende paa den
anden Side. men ogsaa krydser samme (se Fig. 1). Af
Form er det næsten trekantet, med den største Brede, der
er betydelig større end den halve Længde, i dets yderste
Del. Enderanden er næsten tvært afskaaret og viser
istedetfor de sædvanlige Randborster kun en yderst tin Ciliering.
Den indre Kaut er ganske svagt buet og forsynet med de
sædvanlige cilierede Randbørster, der dog kun er lidet
udviklede og hurtigt aftagende i Længde mod det indre
afrundede Hjørne af Bladet. Den ydre Kant er næsten lige
og ganske glat samt gaar fortil ud i en tandformig Fortsats,
der er tæt trykket til Bladet og overrages af Enderanden.
Tværs over Bladet lober i diagonal Retning en stump Kjol,
der lidt efter lidt taber sig mod det indre Hjorne.
succeeding epimera (see fig. 2). In the males, these epimera,
are, however, comparatively much smaller and more evenly
rounded. The epimera of the 4th and 5th segments are
directed obliquely, in a posterior direction, and terminate
with a short dentiform process.
The eyes are extremely small, and covered to a great
extent by the frontal plate. They are narrow and clavate
in shape, with the outer portion but slightly dilated aud
uniformly rounded. The ocular pigment is quite light,
approximating a chalky white, and the visual elements are
imperfectly developed.
As with the Crangonians, the antennæ are attached
almost in the same horizontal plane; and hence, when the
animal is viewed in profile (tig. 2), they cover each other
to a great extent.
The peduncle of the 1st pair of antennæ (see tig. 3)
is rather short, scarcely half as long as the carapax. Of
its o articulations, the 1st is the largest, equalling in length
both the others taken together. At its base, it is provided
on the exterior side with the usual lamelliform projection,
which, however, occurs but slightly developed and
narrow-lanceolate in shape. The inner edge of the articulation is
beset with short bristles, and exhibits, a little anterior to
the middle, an exceedingly small dentiform prolation. The
terminal articulation is somewhat shorter than the 2nd. and
truncate at the extremity. Of the 2 flagella, the exterior,
in the male, is about twice as long as the peduncle, — in the
female somewhat shorter; in both sexes it is cylindric in
form, and nearly of a uniform thickness to the extremity,
which is produced to a short terminal lash, as also
composed of numerous short articulations, beset with the usual
fascicles of translucent, riband-shaped sensory bristles. The
inner flagellum (see tigs. 1, 2) is considerably elongated,
being about three times the length of the outer, and tapering
gradually toward the extremity.
The 2nd pair of antennæ (see fig. 4 ) have a short and
thick, indistinctly segmented basal portion, left well-nigh
wholly uncovered by the carapax. and, externally, jutting
forth in the form of a strong, triangular projection.
The squamiform appendage attains quite a remarkable
size, and is, toward the extermity, so considerably expanded
that, in its usual position, it not only meets the corresponding
appendage on the opposite side, but even overlaps it (see
fig. 1). In fonn it is almost triangular, with the exterior
portion broadest; its greatest breadth considerably exceeds
half the length. The terminal border is well-nigh truncate,
and exhibits, in place of the marginal bristles usually
observed, an exceedingly fine clothing of hairs. The inner
margin is very slightly curved, and furnished with the usual
ciliated marginal bristles, which, however, are but little
developed and rapidly diminish in length toward the inner
rounded corner of the scale. The outer margin is almost
straight aud perfectly smooth; moreover, it extends anteriorly
as a dentiform projection, closely pressed up to the scale
and overlapped by the terminal border. Straight across the
scale, extends diagonally an obtuse carina, which gradually
disappears toward the inner corner.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
