162 
3dio Bagkropssogmonts Sidcplader er bagtil udtrukne 
1 on ussedvanlig stmrkt udviklet, skarp, opadkrummet hage- 
forinig Fortsats, ovenfor hvilken er irestet en Rad af Fjser- 
borster (se Fig. 7 g). De bagre Segmenter er oventil jevnt 
hvmlvede uden nogen Kjffl eller pukkelformige Fremspring. 
0ine mangier ganske ligesom hos de foregaaende Arter. 
Fplerne (Fig. 7 a — b) er mindre robuste end hos de 
2 foregaaende Arter, forovrigt af den sasdvanlige Bygning. 
De 2 fnrste Fodpar (Fig. 7 c) har Haanden af regel- 
nnessig oval Form, med Griberanden temmelig skraa og 
bagtil begnendset af et tydeligt Fremspring, der omtrent 
ligger lige langt fra Basis som fra Spidsen af Haanden, og 
ei' bevaibnet mod den siedvanlige Torn. 
6te Fodpar (se Fig. 7) er forholdsvis noget mindre 
forkenget og svagere bj'gget end hos de 2 foregaaende Arter 
og har sidste Led neppe lamgere end det foregaaende. 
Sidste Fodpar (Fig. 7 cl) udmgerker sig i hoi Grad 
ved Hofteleddots eiendonnnelige Form. Dette er forholdsvis 
betydelig mindre end hos de ovrige Arter og har det nedre 
bagre' Hjorne udtrukket i en skarp dolkfonuig Fortsats, der 
er rettet lige bagud og oventil ved et lidet Indsnit er skarpt 
begnendset fra den kun svagt buede bagre Rand; nedentil 
viser denne Fortsats 2 korte Saugtakker. 
Bagkroppens Vedhmng ligner meget samme hos H. 
abyssi, dog med den Forskjel, at Halevedhaenget (Fig. 7 f) 
er dybere kloftet. 
Farvon er den ssedvanlige ensformig graahvide, her 
imidlertid noget mere gjennemsigtig. 
Lamgden synes ikke at overskride 5 mm . 
Forekomst og Udbredning. Nogle faa Exemplarer 
af denne distinct© Art er under Expeditionen indsamlede 
paa 2 forskjellige Stationer, den one (St. 200) beliggende 
i Havet NY af Fimuarken, Dybden 620 Favne, den 2den 
(St. 262) lige 0st af Vardo, Dybden 148 Favne. Da ial- 
fald den ene af disse Stationer tilhorer den kolde Area og 
den anden tilhorer det i sin Fauna idethele arktislce 0sthav, 
maa Arten vistnok ansees for at v?efe a.f hoinordisk Op- 
rindelse. 
43. Harpinia serrata, G. 0. Sars, n. sp. 
(PI. XIII, Fig. 8, 8 a—d). 
Harpinia serrata, Gr. 0. Sars, Crust. & Pycnog. nova etc., No. 21. 
Artscharacteristik. Legemet kort og tykt, med tem- 
melig store Epimerer. Hovedet oventil stierkt hvielvet, med 
Pandepladen noget nedadkrunnnet. De 3 forreste Bagkrops- 
The lateral plates of the 3rd abdominal segment are 
drawn out posteriorly to a remarkably strong-developed, 
sharp, upward-curving, hook-shaped projection, above which 
extend a series of plumous bristles (see fig. 7 g). The 
posterior segments are uniformly arched above, without 
any keel or hunched projection. 
No trace of eyes, as in the preceding species. 
The antennas (figs. 7 a — b) are less robust than in 
the 2 preceding species, but, for the rest, of the usual 
structure. 
The 2 anterior pairs of legs (fig. 7 c) have the hand 
of a regular oval form, with the palmar margin rather 
oblique and defined posteriorly by a distinct projection, 
placed about as far from the base as from the point of 
the hand, and bearing the usual spine. 
The 6th pair of legs (see fig. 7) occur relatively some- 
what less produced and more feeble in structure than are 
those of the 2 foregoing species, having also the terminal 
articulation scarcely at all longer than the preceding. 
The last pair of legs (fig. 7 d) are highly charac- 
terized by the peculiar form of the basal joint, which is 
relatively much smaller than in the other species, and has 
the lower posterior corner jutting out as a sharp, dagger- 
shaped projection, directed straight backwards, and sharply 
defined above, by a small incision, from the faintly arcuate 
posterior margin; below, this projection exhibits 2 short 
teeth. 
The abdominal appendage presents very considerable 
resemblance to that in H. abyssi, saving" however that the 
telson (fig. 7 f ) is more deeply cleft. 
Colour, as usual, a uniform greyish-white — in this 
animal, however, somewhat more translucent. 
Length apparently not exceeding 5""". 
Occurrence and Distribution. — A few examples of 
this distinct species were collected on the Expedition, at 
2 different Stations, one (Stat. 200) in the sea north-west 
of Finmark, depth 620 fathoms, the other (Stat. 26 2) due 
east of Vardo, depth 148 fathoms. One, at least, of these 
Stations having been in the cold area, and the other in the 
Barents’ Sea, a tract of ocean on the whole essentially 
polar as regards its Fauna, the present form is unques- 
tionably of Arctic origin. 
43. Harpinia serrata, G. 0. Sars, n. sp. 
(PI. XIII, figs, 8, 8 a — d). 
Harpinia serrata, Gr. 0. Sars, Crust. & Pycnog. nova etc., No. 21. 
Specific Character. — Body short and thick, with 
rather large epimera. Head strongly arched above, with 
frontal plate curving slightly downward. The 3 anterior 
