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Artens for Tiden bekjendte Udbredningsfelt er
herefter det østlige Afhæld mod Nordhavets store Dyb fra
den 62de til op mod den 77de Bredegrad.
Hence, the tract throughout which the species is at
present known to occur, comprises the eastern slope of the
sea-bed, shelving down toward the great deeps of the
Northern Ocean, — from the 62nd to well-nigh the 77th
parallel of latitude.
Gen. 2. Ægina, Krøyer, 1843.
Nat. Tidsskrift 1 R, Bd. 4.
74. Ægina spinifera. Bell.
(PI. XVIII, Fig. r>, a—c, x).
Caprella spinifera, Bell, i Appendix to Belcher’s last of Aret. Voy., pg.
407, Tab. 35, Fig. 2, 1855.
Ægina spinosissima, Stimpson, Marine Invertebrata of Grand Manan,
pg. 45, 1857.
Ægirni spinosissima, G. O. Sars, Prodromus descript. Crust. & Pycnog.,
Mo. 135.
Artscharacteristik. Legemet forlænget og smalt, oventil
bevæbnet med en Del regelmæssigt ordnede tilspidsede Pigge,
hvoraf de største danner en dobbelt Rad langs efter Ryggen,
3—4 Par paa hvert Segment, naar undtages de 2 sidste.
Hovedet oventil med 2 parvis ordnede Pigge. Ved Basis
af 2det Fodpar og de 2 Par Gjelleblade til hver Side en
stærk lateral Pig. Øinene saa, runde. lste Par Folere
næsten af Legemets Længde, med Skaftets sidste Led
længere end lste, Svøben noget kortere end Skaftet; 2det Par
særdeles smaa og tynde, meget kortere end lste Pars Skaft
og kun besat med korte Haar. 2det Fodpar kraftigt
udviklet, af lignende Fonn hos begge Kjøn, Haanden aflang,
sammentrykt, med 3 lancetformige Flige i den bagre Kant,
begrændsende 2 vinkelformige Indsnit; Spidsen af Haanden
over Endekloens Fæste udtrukket i et skarpt Hjørne.
Hannen noget mere langstrakt end Hunnen og med mindre
skarpt udpræget Pigbevæbning. Legemet gjennemsigtigt,
med mørkere Shatteringer. Længden indtil 38""*.
Findesteder. Ståt. 48. 336.
Bemærkninger. Dell af Bell i Belcher’s Reise
beskrevne Caprella spinifera er utvivlsomt identisk med
nærværende Art; ligeledes er den noget senere af Stimpson
anførte Ægina spinosissima samme Art. Derimod er Boeck’s
Ægina echinata aabenbart forskjellig baade ved Legemets
Bevæbning og 2det Fodpars Bygning.
Beskrivelse af Hunnen. Legemet er (se PI. XVIII,
Fig. 5) smalt og langstrakt, næsten cylindriskt og oventil
Gen. 2. Ægina, Kröyer, 1843.
Xat. Tidsskrift, 1 R,, Bd.
74. Ægina spinifera, Bell.
(Fl. XVIII, fig. 5, a—c, x).
Caprella spinifera, Bell, in the Appendix to Belcher’s last Arctic Voyage,
p. 407, PI. 3."., fig. 2, 1855.
Ægina spinosissima, Stimpson, Marine Invertebrata of Grand Manan,
p. 45, 1857.
Ægina spinosissima, G. O. Sars, Prodromus descript. Crust. & Pycnog.,
No. 135.
Specific Character. Body elongate and slender,
armed above with a number of acute spikes in regular
arrangement, of which the largest constitute a double series
disposed along the back, — 3 or 4 pairs on every segment,
except the 2 last ones. Head, above, bearing 2 spikes,
arranged as a pair. At base of 2nd pair of legs and the 2
pairs of branchial scales, on either side a strong lateral
spike. Eyes small, round. First pair of antennæ attaining
well-nigh length of body, with last joint of peduncle longer
than 1st, flagellum somewhat shorter than peduncle; 2nd pair
exceedingly small and slender, much shorter than peduncle
of 1st, and clothed merely with short hairs. Second pair
of legs powerfully developed, of a similar form in both
sexes, band oblong, compressed, with 3 lanceolate lappets
on posterior margin, marking off 2 angular incisions;
point of hand above attachment of terminal claw produced
to a sharp corner. Male somewhat more elongate than
female, and with armature of spikes less prominently
developed. Body translucent, relieved with darker shadings.
Length reaching 38™".
Locality. — Stats. 48, 336.
Remarks. — The form described as Caprella spinifera
by Bell, in Belcher’s Voyage, is unquestionably identical
with the present species; moreover, this also applies to
Ægina spinosissima, recorded somewhat later by Stimpson.
On the other hand, Boeck’s Ægina echinata differs
obviously alike in the armature of the body and the structure
of the 2nd pair of legs.
Description of the Female. — The body (see PI.
XVIII, fig. 5) is slender and elongate, almost eylindric,
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