149 
'x-'aeget Boeck til at opstille sin Slaegt Onisimus, tier vel 
va nskeligt latter sig hsevde soni saadan. Det er forholtlsvis 
'"it og bredt, saa at dot ikke engang rsekker til Enden 
,lf sidste Par Halefodders Stamme. Spidsen er afstumpet 
viser et ganske kort og smalt Indsnit, tier ikke rsekker 
^ Mkltcn af Vedhmngets Lsengde. 
Earven var lios tie friskt indfangede Exemplarer rod- 
^ l| l nied mere intensivt rodligt gjeimeinskinnende Indvolde. 
Lsengden af det storste Exemplar er I3 mm . 
Forekomst og Udbredning. 2 Exemplarer at denne 
erholdtes under Expeditionens sidste Togt omtrent 
midtveis mellem Beeren Eiland og Fininarken (Stat. 323) 
ltl ot Dyb af 223 Favne. De fandtes parasitisk paa, en 
stoirt “ b'a dette Dyb optagen Adinie. Om Artens Udbred- 
lun ? er det selvMgeligt vanskeligt at sige noget Med Be- 
mthed. Da Station©) i egentlig ikke tilhorer den kolde 
_ 1<>a ) er Arten heller ikke med Sikkerhed at characteri- 
S( le 80111 en udprteget arktisk Form. 
thatf induced Boeck to establish In’s genus Onisimus , which, 
however, will hardly admit of being retained as such. 
The appendage is short and broad, not even reaching to the 
extremity of the trunk of the last pair of caudal stylets. 
The point is obtuse, and exhibits an exceedingly short and 
narrow incision, that does, not extend to the middle of the 
appendage. 
Colour in the recently taken specimens a reddish- 
yellow; the viscera — seen shining through the skin — 
more vividly red. 
Length of the largest specimen 13 rara . 
Occurrence and Distribution. — Two specimens of 
this species were obtained on the last cruise of the Ex- 
pedition, about midway between Beeren Eiland and Finmark 
(Stat. 323), from a depth of 223 fathoms. They occurred 
as parasites on a, large Adinian, taken at that depth. Con- 
cerning the distribution of the species, nothing can of course 
be stated with certainty. The Station not being in a strict 
sense within the limits of the cold area, this animal, too, 
cannot be regarded as a prominent Arctic form. 
36. Onisimus leucopis, G. 0. Sars, n. sp. 
(PI. XIII, Fig. 1, 1 a). 
on Ux {Onisimus) leucopis , G. 0. Sars, Crust. & Pycnogonida nova 
etc., No. 14. 
36. Onisimus leucopis, G. 0. Sars, n. sp. 
(PI. XIII, figs. 1, 1 a). 
Anonyx {Onisimus) leucopis, G. 0. Sars, Crust. N Pycnogonida nova 
etc., No. 14. 
Artscharacteristik. Legemet ikke meget sammentrykt, 
'' U J ov nt hvaelvet Ryg og forholdsvis ikke meget store 
pimerer. Hovedets Sidehjorner tilspidsede. 4de Par Epi- 
11111 '''' bagtil nedenfor Udrandningen kun lidet fremsprin- 
~ ( n de. 3 die Bagkropssegments Sideplader bagtil endende 
! Uul et spidst Hjjorno. De folgende Segmenter oventil jevnt 
Ua ’ vode. 0inene ufuldstamdigt udviklede, meget smaa, 
j Ue< * bvidt Pigment, lste Par Folere med Svoben noget 
p n o L> re' end Skaftet, Bisvoben temmelig stor, 4-leddet. 2dot 
p ‘ l1 Folere kengere end lste Par. Fodderne af smdvanlig 
J going; 3die Led paa de 3 bagre Par kort og tykt, JHale- 
lieil Set af samme Lsengde som sidste Par Halefodders 
amine, i Spidsen ganske svagt udrandet. Farven hvid- 
lialvt gjennemsigtig. Lsengden 10 mm . 
Specific Character. — Body not much compressed, 
with uniformly arching hack and. relatively not very large 
epimera. Lateral corners of head pointed. Fourth pair 
of epimera but slightly projecting posteriorly below the 
emargination. Lateral plates of 3rd abdominal segment 
terminating posteriorly with an acute corner. The succeed- 
ing segments uniformly arched above. Eyes imperfectly- 
developed, very small, pigment white. First pair of antennae 
with flagellum somewhat longer than peduncle; secondary 
flagellum rather large, four-jointed. Second pair of antennae 
longer than 1st. Legs exhibiting usual structure; 3rd ar- 
ticulation on the 3 posterior pairs short and thick. Tel son 
equalling in length trunk of last pair of caudal stylets, very 
faintly emarginate at extremity. Colour whitish, semi- 
translucent. Length 10’""'. 
Pindested. Stat. 96. 
Locality. — Stat. 96. 
if u ^ omaer ^ nin S e r. Denne Art kjendes let fra de ovrige 
°eck til Slag ten Onisimus hen forte Arter ved 0inenes 
11 dstaendige Udvikling samt ved Halevedhamgets Form. 
Remarks. — This species is easily distinguished from 
all the others referred by Boeck to the genus Onisimus, 
by reason of the imperfect development of the eyes and 
the shape of the telson. 
