198 
Fpdderne riser den for Slsegten characteristiske Byg- 
ning. De 2 forreste Par er nieget spinkle, mod forholdsvis 
liden og smal Haand. De 2 folgende Par har 3die Led 
meget stort, nsesten tendannet og i begge Kanter besat med 
lange Fjferborster. 4de Led er swrdeles lidet, Endekloen 
lang og spids, lsengere end de 2 sidste Led tilsammen. 5te 
Fodpar, der som ssedvanlig er rettet mere eller mindre stserkt 
bagtil, har Hofteleddet saerdeles bredt og muskulost, nsesten 
cirkelformigt. 6te Fodpar ligner dette i Form, men har 
Hofteleddet noget mindre. Sidste Par endelig er som hos 
Slsegtens pvrige Arter kortere og robustere end de ovrige, 
med Hofteleddet sserdeles stort og bagtil udvidet til en 
bred, i Enden nsesten tvsert afkuttet borstebesat Lap, der 
naar nsesten til Enden af 3die Led; sidste Led paa dette 
Fodpar er ikke udvidet, men smalere end de foregaaende 
og bserer paa sin Spids en kort, lancetformig Endeklo. 
Sidste Par Halefodder er betydelig storre end de ovrige 
og forsynede med forlaengede, lancetformige Grene, der i begge 
Kanter er tab borstebesatte. 
Halevedhamget rsekker noget udover sidste Par Hale- 
fodders Stamrne og er af temmelig smal Form saint klovet 
lige til Roden. 
Dyrets Farve er hvidagtig, gjennemsigtig, med kun 
meget sparsomt, diffust rodligt Pigment. 
Laengden gaar op til 23’"“. 
Forekomst. 2 Exemplarer af denne Art toges under 
Expeditionens lste Togt udenfor Helgelandskysten (Stat. 
147) paa et Dyb af 142 Favne. Da Stationen til borer den 
tempererede Area, er Arten neppe at betragte som en 
egentlig arktisk Form, omend Findestedet ligger noget nor- 
denom Polarcirkelen. 
61. Ampelisca minuticornis, G. 0. Sars, n. sp. 
(PL XVI. Fig. 5, a— ol. 
Ampelisca minuticornis, Gr. O. Sars, Crust. & Pycnogonida nova etc., 
No. 32. 
Artscharaeteristik. Legemet uden dorsal Kjol eller 
Fortsatser. Hovedet oventil hvaelvet, fortil afsmalnende og 
i Enden skraat afskaaret. De 4 forreste Par Epimerer 
forholdsvis smaa, uden tandformigt Fremspring. 3die Bag- 
kropssegments Sideplader bagtil udtrukne i en smalt til- 
rundetLap. Ingen tydelige 0ine. Folerne ussedvanlig smaa; 
lste Par neppe lsengere end Hovedet og de 2 forreste Seg- 
menter tilsammen, med Skaftets 2det Led meget smalt, 
Svoben kun lidet lsengere end Skaftet, 7-leddet; 2det Par 
over dobbelt saa langt som lste, men neppe opnaaende 
The legs exhibit the structure characteristic of the 
genus. The 2 anterior pairs are very slender, with the 
hand comparatively small and narrow. The 2 succeeding 
pairs have the 3rd joint very large, and almost fusi- 
form, with both margins bearing long plumous bristles. 
The 4th joint is exceedingly small, the terminal claw long 
and acute, longer than the last 2 joints taken together. 
The 5th pair of legs, which, as usual, are directed more 
or less straight backward, have the basal joint exceedingly 
broad and muscular, in form almost circular. The 6th pair 
resemble the latter in appearance, but have the. basal joint 
somewhat smaller. Finally, the last pair, as in the other 
species ot the genus, are the shortest and most robust, 
with the basal joint remarkably large, and, posteriorly, ex- 
panded to a broad, at the extremity almost vertically truncate, 
bristle-beset lobe, reaching well-nigh to the end of the 3rd 
joint; the last joint on this pair of legs is not expanded, 
but, on the contrary, more slender than the preceding, and 
bears on its point a short, lanceolate terminal claw. 
The last pair of caudal stylets are considerably larger 
than the others, and furnished with produced, lanceolate 
branches, densely bristle-beset along both margins. 
The telson extends a trifle beyond the stem of the 
last pair of caudal stylets, and in form is rather slender, 
as also cleft to the base. 
The colour of the animal is whitish, translucent, faintly 
tinged however with a reddish, diffuse pigment. 
The length reaches 23™’”. 
Occurrence. — Of this species 2 individuals were 
taken, on the 1st cruise of the Expedition, off the coast 
of Helgeknd (Stat. 147), at a depth of 142 fathoms. The 
Station having belonged to the temperate area, the form 
can scarcely be regarded as a true Arctic species, though 
the locality lies a little to the north of the Polar Circle. 
61. Ampelisca minuticornis, G. 0. Sars, n. sp. 
(PI. XVI, fig. r>, a— 0 ). 
Ampelisca minuticornis, G. 0. Sars, Crust. & Pycnogonida nova etc., 
No. 32. 
Specific Character. — Body without dorsal carina or 
projections. Head arched above, tapering anteriorly, and 
obtusely truncate at extremity. The 4 anterior pairs ol 
epimcra comparatively small, without dentiform projections. 
Lateral plates of 3rd abdominal segment drawn out pos- 
teriorly to a slender, rounded lobe. No perceptible eyes. 
Antennae remarkably small; 1st pair scarcely longer than 
head and the 2 anterior segments taken together, with 
2nd joint of peduncle exceedingly slender, flagellum but 
little longer than peduncle, seven-jointed; 2nd pair more 
