56 
fligerne (se Fig. 28) er i Spidsen stumpt tilrundede og her |' 
forsynede med 3 Torner, hvoraf den inidterste er storrt. 
De ydre Halevedhaeng synes ikke at vise noget sser- 
ligt udimerkende i sin Byguing. Hpreapparatet i Basis af 
den indre Plade er som hos de ovrige Arter ufuldstaendigt 
udviklet, idet Otolitlien kun er liden og ikke incrusteret. 
Den ydre Blade liar i Yderkanten den ssedvanlige med 2 
korte Torner beva.'bnedo Afsats ; Spidsen var hos det uuder- 
spgte Exemplar afbrukket paa begge Sider. 
Legemet var i levende Tilstand prydet med et vakkert 
lyserpdt Pigment, der var afsat i temmelig regelmsessige 
Shatteringer saavel paa Forkrop som Bagkrop. Mnnddelene, 
Fpdderne og 0ienstilkene var intensivt rodfarvede, og ogsaa 
den i den forreste Del af Kroppen gjennemskinnende kugle- 
formige Mave viste et morkt rpdligt Indhold. 
Det foreliggende Exemplar har den for en Myside 
meget anselige Lmngde af 60 mm , maalt fra Spidsen af 2det 
Par Antenners Blad til Enden af Halevedhaengene. 
Forekomst. Det ovenfor beskrevne Exemplar blev 
under Expeditionens sidste Togt optaget ved Hjselp af 
Trawlnettet fra et Dyb af 459 Favne i Havet NY af 
Spitsbergen (Stat. 362). under nser 80° Brede. Stationen 
tilhprer den kolde Area, og Arten maa folgelig, ligesom de 
i det foregaaende beskrevne Mysider ansees for en nrktisk 
Form. 
H. Boreomysis scyphops, Gr. 0. Sars, n. sp. 
(PI. VI). 
Boreomysis scyphops , (t. 0. Sars, Crustacea et Pycnogonida nova etc., 
No. 8. 
Artscharacteristik. Bygskjoldet stort, dsekkende fuld- 
stsendigt Forkroppen, fortil i Mid ten noget fremspringende, 
men uden at danne noget Pandehorn: de nedre forreste 
Sidehjorner stumpt tilrundede i Enden. 0inene af meget 
eiendommelig Form, stillede vertikalt og tab- sammen, mod 
den ydre Flade skaalformigt indhulet, uden Spor af Pigment 
eller Synselementer. Iste Par Fpleres Skaft simpelt cylin- 
driskt ; den ydre Svobe ved Basis noget udvidet, uden imid- 
lertid at danne nogen skarpt begrsendset Lap. 2det Par 
Fpleres Blad mere end dobbelt saa langt som lste Pars 
Skaft, aflangt linesert med Enden afrundet og det ydre 
Hjorne bevaebnet med en liden Tand. Fodderne tat bprste- 
besatte, med Tarsen kun sammensat af 2 1 ed ; Svomme- 
grenene af enorm Lsengde. Hannens Bagkropslemmer alle 
vel udviklede. med stferkt forlsengede Endegrene ; den indre 
armed with strong teeth, arranged in a pectinate form. 
The terminal lobules (see fig. 28) are obtusely rounded at 
the point, where they have 3 spines, of which the median 
is the largest. 
The outer caudal appendages would not appear to 
have anything specially characteristic in their structure. 
The auditory apparatus at the base of the inner plate is. 
as in the other species, imperfectly developed, the otolith 
being but small and not incrusted. The outer plate exhibits 
on the exterior margin the usual projection, armed with 
2 short spines; the point in the specimen examined had 
been broken off on both sides. 
The body, in a living state, was coloured with a 
beautiful light-red pigment, diffused with comparative uni- 
formity alike over the anterior and the posterior divisions 
of the body. The oral appendages, the legs, and the eye- 
stalks were of a vivid red, and even the globular stomach, 
seen shining through the foremost part of the body, exhib- 
ited within a dark, reddish substance. 
The specimen secured has, for a Mysidian, the very 
considerable length of 6(P"‘, measured from the point of 
the scale of the 2nd pair of antennae to the extremity of 
the caudal appendages. 
Occurrence. — The specimen treated of above was 
brought up in the trawl from a depth of 459 fathoms, in 
the open sea, north-west of Spitzbergen (Stat. 362), close 
to the 80th parallel of latitude. This Station being in the 
cold area, the species must, equally with the Mysidians 
previously described, be regarded as an Arctic form. 
!l. Boreomysis scyphops, G. O. Sars, n. sp. 
(PI. VI). 
Boreomysis scyphops, G. 0. Sars, Crustacea et Pycnogonida nova etc., 
No. :t. 
Specific Character. — Carapax large, covering the 
whole of the anterior division of the body, and projecting 
somewhat anteriorly, but without forming any rostrum; antero- 
lateral corners obtusely rounded at the extremity. Eyes 
very peculiar in appearance, placed vertically and close 
together, ealyciform, with the outer surface hollowed, and 
not exhibiting any trace of pigment or visual elements. 
Peduncle of 1st pair of antennae simple-cylindric ; outer 
flagellum somewhat dilated at the base, without however 
forming any sharply defined lobule. Scale of 2nd pair of 
antennae more than twice as long as peduncle of 1st pair, 
oblongo-linear, with the end rounded, and having at the 
outer corner a small tooth. Legs densely beset with 
bristle.s, and tarsus composed of only 2 articulations; na- 
tatory branches of prodigious length. Abdominal limbs in 
