Forst efterat jeg havde forsynet mig med en meget 
lang, 4—5 Alens Stang, til hvis Ende Haaven fast- 
bandtes, kunde jeg fange den i storre Antal; men 
mange Exemplarer gik endnu saa dybt, at det var 
umuligt at naa i dem. 
Foruden paa Filefjeld er den af nu afdode 
Gartner Moe taget i Lom, og af Landskabsmaler 
Skari ved Kongsvold paa Dovrefjeld. I Finmarken 
er den derimod, saavidt mig bekjendt, aldrig bleven 
paatruffet, ligesaalidt som i Lavlandet Syd paa. 
Denne Phyllopode er saaledes hos os utvivlsomt en 
egte «relict» Form, der kun i vore Hoifjelde endnu 
har fundet de nodvendige Betingelser for sin Exi- 
stence. ! 
Udbredning. — Arten blev forst fundet i Gron- 
land, hvor den synes at vere meget almindelig. 
Senere er den ogsaa observeret i det arktiske Ame- 
rika, paa Spitsbergen, paa Novaja Semlja og i 
Sibirien. Den er saaledes en wgte arktisk Form, og 
i sin Udbredning circumpolar. 
RB 
was limited to a very few specimens. It was only 
when I[ had provided myself with a very long rod 
— 8 or 10 feet long — to the end of which the 
net was attached, that I was able to capture them 
in larger numbers; and many of them were still in 
such deep water, that it was impossible to get 
at them. 
Besides being found on the Filefjeld, it was 
found by the late florist, Moe, in the Lom, and 
by landscape-painter Skari at Kongsvold on the 
Dovre Mountains. On the other hand, it has never, 
to my knowledge, been met with in Finmark, nor 
yet in the south lowlands. This Phyllopod is thus 
in this country (Norway) a true «relict» form, which 
has found only on our mountains the conditions 
necessary for its existence. 
Distribution. — The species was first found in 
Greenland, where it seems to be very common. It 
has since been observed in arctic America, on Spitz- 
bergen, Novaia Zemlia, and in Siberia. It is thus 
a true arctic form, and circumpolar in its distribution. 
Sectio III. Conchostraea. 
Syn: Phyllopoda conchiformia, 
Characteristik. — Legemet omgivet af en stor, 
tveklappet Skal af chitinos Structur og festet til 
samme ved et smalt dorsalt Ligament. Valvlerne 
bevegelige ved Hjelp af en sterk Lukkemuskel og 
forbundne dorsalt med hinanden uden nogen egentlig 
Laas. Hovedet bevegeligt og vel sondret fra Krop- 
pen, gaaende ud i et mere eller mindre fremragende 
sammentrykt Rostrum. Kroppen ensformigt seg- 
menteret og endende med en kort, mere eller min- 
dre omboiet Haledel, sedvanligvis forsynet i Enden 
med 2 sterke bevegelige Klor og berende dorsalt 
2 jevnsides stillede Borster. De sammensatte Mine 
ner sammen, undertiden sammensmeltede, og belig- 
gende i det indre af Hovedet. Det enkle ie vel 
udviklet. Begge Par Folere tilstede, Iste Par for- 
holdsvis smaa, enkle; 2det Par omdannede til kraf- 
tige, tvegrenede Svommeorganer. Munddelene ner- 
mest lignende dem hos Gruppen Anostraca. Fod- 
derne af uniform Bygning, pladeformige, fligede, med 
tydeligt udviklet Coxallap og med Exopoditen delt 
ien dorsal og en ventral Lap; det iste eller de 
Seetion IL. Conchostraca. 
Syn: Phyllopoda conchiformia. 
Characters. — Body surrounded by a large bi- 
valved shell of chitinous structure, to which it is 
attached by a narrow dorsal ligament. Valves 
movable by the aid of a strong adductor muscle, 
and connected dorsally with one another without 
having a true hinge. Head movable and well- 
defined from the trunk, terminating in a more or 
less prominent, compressed rostrum. Trunk uni- 
formly segmented, ending in a short, more or less 
deflexed caudal part, generally provided at the extre- 
mity with two strong, movable claws, and bearing 
dorsally 2 juxtaposed bristles. Compound eyes close 
together, sometimes merged into one another, and 
situated in the interior of the head. Ocellus well 
developed. Both pairs of antenne present, Ist pair 
comparatively small, simple; 2nd pair transformed 
into powerful, bi-ramous natatory organs. Oral 
parts most nearly resembling those in the Anostraca 
group. Legs of uniform structure, lamellar, lobate, 
with distinctly developed coxal lobe, and with the 
exopodite divided into a dorsal and a ventral lobe; 
